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-rw-r--r--arch/ia64/kernel/Makefile39
-rw-r--r--arch/ia64/kernel/Makefile.gate27
-rw-r--r--arch/ia64/kernel/asm-offsets.c2
-rw-r--r--arch/ia64/kernel/efi.c1
-rw-r--r--arch/ia64/kernel/entry.S4
-rw-r--r--arch/ia64/kernel/fsys.S35
-rw-r--r--arch/ia64/kernel/gate.S171
-rw-r--r--arch/ia64/kernel/gate.lds.S17
-rw-r--r--arch/ia64/kernel/head.S10
-rw-r--r--arch/ia64/kernel/ivt.S2
-rw-r--r--arch/ia64/kernel/module.c32
-rw-r--r--arch/ia64/kernel/paravirt.c539
-rw-r--r--arch/ia64/kernel/paravirt_patch.c514
-rw-r--r--arch/ia64/kernel/paravirt_patchlist.c79
-rw-r--r--arch/ia64/kernel/paravirt_patchlist.h28
-rw-r--r--arch/ia64/kernel/paravirtentry.S99
-rw-r--r--arch/ia64/kernel/patch.c40
-rw-r--r--arch/ia64/kernel/setup.c2
-rw-r--r--arch/ia64/kernel/time.c9
-rw-r--r--arch/ia64/kernel/vmlinux.lds.S30
20 files changed, 1506 insertions, 174 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index f2778f2c4fd9..5628e9a990a6 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -5,7 +5,7 @@
extra-y := head.o init_task.o vmlinux.lds
obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \
- irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o \
+ irq_lsapic.o ivt.o machvec.o pal.o paravirt_patchlist.o patch.o process.o perfmon.o ptrace.o sal.o \
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o
@@ -36,7 +36,8 @@ obj-$(CONFIG_PCI_MSI) += msi_ia64.o
mca_recovery-y += mca_drv.o mca_drv_asm.o
obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
-obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o
+obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o \
+ paravirt_patch.o
obj-$(CONFIG_IA64_ESI) += esi.o
ifneq ($(CONFIG_IA64_ESI),)
@@ -45,35 +46,13 @@ endif
obj-$(CONFIG_DMAR) += pci-dma.o
obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
-# The gate DSO image is built using a special linker script.
-targets += gate.so gate-syms.o
-
-extra-y += gate.so gate-syms.o gate.lds gate.o
-
# fp_emulate() expects f2-f5,f16-f31 to contain the user-level state.
CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31
-CPPFLAGS_gate.lds := -P -C -U$(ARCH)
-
-quiet_cmd_gate = GATE $@
- cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
-
-GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
- $(call ld-option, -Wl$(comma)--hash-style=sysv)
-$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
- $(call if_changed,gate)
-
-$(obj)/built-in.o: $(obj)/gate-syms.o
-$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
-
-GATECFLAGS_gate-syms.o = -r
-$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
- $(call if_changed,gate)
-
-# gate-data.o contains the gate DSO image as data in section .data.gate.
-# We must build gate.so before we can assemble it.
-# Note: kbuild does not track this dependency due to usage of .incbin
-$(obj)/gate-data.o: $(obj)/gate.so
+# The gate DSO image is built using a special linker script.
+include $(srctree)/arch/ia64/kernel/Makefile.gate
+# tell compiled for native
+CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE
# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config
define sed-y
@@ -109,9 +88,9 @@ include/asm-ia64/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s
clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
#
-# native ivt.S and entry.S
+# native ivt.S, entry.S and fsys.S
#
-ASM_PARAVIRT_OBJS = ivt.o entry.o
+ASM_PARAVIRT_OBJS = ivt.o entry.o fsys.o
define paravirtualized_native
AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK
diff --git a/arch/ia64/kernel/Makefile.gate b/arch/ia64/kernel/Makefile.gate
new file mode 100644
index 000000000000..1d87f84069b3
--- /dev/null
+++ b/arch/ia64/kernel/Makefile.gate
@@ -0,0 +1,27 @@
+# The gate DSO image is built using a special linker script.
+
+targets += gate.so gate-syms.o
+
+extra-y += gate.so gate-syms.o gate.lds gate.o
+
+CPPFLAGS_gate.lds := -P -C -U$(ARCH)
+
+quiet_cmd_gate = GATE $@
+ cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
+
+GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
+ $(call ld-option, -Wl$(comma)--hash-style=sysv)
+$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
+ $(call if_changed,gate)
+
+$(obj)/built-in.o: $(obj)/gate-syms.o
+$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
+
+GATECFLAGS_gate-syms.o = -r
+$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
+ $(call if_changed,gate)
+
+# gate-data.o contains the gate DSO image as data in section .data.gate.
+# We must build gate.so before we can assemble it.
+# Note: kbuild does not track this dependency due to usage of .incbin
+$(obj)/gate-data.o: $(obj)/gate.so
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c
index 742dbb1d5a4f..af5650169043 100644
--- a/arch/ia64/kernel/asm-offsets.c
+++ b/arch/ia64/kernel/asm-offsets.c
@@ -316,5 +316,7 @@ void foo(void)
DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
+ DEFINE_MAPPED_REG_OFS(XSI_ITC_OFFSET_OFS, itc_offset);
+ DEFINE_MAPPED_REG_OFS(XSI_ITC_LAST_OFS, itc_last);
#endif /* CONFIG_XEN */
}
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index efaff15d8cf1..7ef80e8161ce 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -456,6 +456,7 @@ efi_map_pal_code (void)
GRANULEROUNDDOWN((unsigned long) pal_vaddr),
pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)),
IA64_GRANULE_SHIFT);
+ paravirt_dv_serialize_data();
ia64_set_psr(psr); /* restore psr */
}
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e5341e2c1175..ccfdeee9d89f 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -735,7 +735,7 @@ GLOBAL_ENTRY(__paravirt_leave_syscall)
__paravirt_work_processed_syscall:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
adds r2=PT(LOADRS)+16,r12
-(pUStk) mov.m r22=ar.itc // fetch time at leave
+ MOV_FROM_ITC(pUStk, p9, r22, r19) // fetch time at leave
adds r18=TI_FLAGS+IA64_TASK_SIZE,r13
;;
(p6) ld4 r31=[r18] // load current_thread_info()->flags
@@ -984,7 +984,7 @@ GLOBAL_ENTRY(__paravirt_leave_kernel)
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
.pred.rel.mutex pUStk,pKStk
MOV_FROM_PSR(pKStk, r22, r29) // M2 read PSR now that interrupts are disabled
-(pUStk) mov.m r22=ar.itc // M fetch time at leave
+ MOV_FROM_ITC(pUStk, p9, r22, r29) // M fetch time at leave
nop.i 0
;;
#else
diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
index c1625c7e1779..3567d54f8cee 100644
--- a/arch/ia64/kernel/fsys.S
+++ b/arch/ia64/kernel/fsys.S
@@ -25,6 +25,7 @@
#include <asm/unistd.h>
#include "entry.h"
+#include "paravirt_inst.h"
/*
* See Documentation/ia64/fsys.txt for details on fsyscalls.
@@ -279,7 +280,7 @@ ENTRY(fsys_gettimeofday)
(p9) cmp.eq p13,p0 = 0,r30 // if mmio_ptr, clear p13 jitter control
;;
.pred.rel.mutex p8,p9
-(p8) mov r2 = ar.itc // CPU_TIMER. 36 clocks latency!!!
+ MOV_FROM_ITC(p8, p6, r2, r10) // CPU_TIMER. 36 clocks latency!!!
(p9) ld8 r2 = [r30] // MMIO_TIMER. Could also have latency issues..
(p13) ld8 r25 = [r19] // get itc_lastcycle value
ld8 r9 = [r22],IA64_TIMESPEC_TV_NSEC_OFFSET // tv_sec
@@ -418,7 +419,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
mov r17=(1 << (SIGKILL - 1)) | (1 << (SIGSTOP - 1))
;;
- rsm psr.i // mask interrupt delivery
+ RSM_PSR_I(p0, r18, r19) // mask interrupt delivery
mov ar.ccv=0
andcm r14=r14,r17 // filter out SIGKILL & SIGSTOP
@@ -491,7 +492,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
#ifdef CONFIG_SMP
st4.rel [r31]=r0 // release the lock
#endif
- ssm psr.i
+ SSM_PSR_I(p0, p9, r31)
;;
srlz.d // ensure psr.i is set again
@@ -513,7 +514,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
#ifdef CONFIG_SMP
st4.rel [r31]=r0 // release the lock
#endif
- ssm psr.i
+ SSM_PSR_I(p0, p9, r17)
;;
srlz.d
br.sptk.many fsys_fallback_syscall // with signal pending, do the heavy-weight syscall
@@ -521,7 +522,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
#ifdef CONFIG_SMP
.lock_contention:
/* Rather than spinning here, fall back on doing a heavy-weight syscall. */
- ssm psr.i
+ SSM_PSR_I(p0, p9, r17)
;;
srlz.d
br.sptk.many fsys_fallback_syscall
@@ -592,17 +593,17 @@ ENTRY(fsys_fallback_syscall)
adds r17=-1024,r15
movl r14=sys_call_table
;;
- rsm psr.i
+ RSM_PSR_I(p0, r26, r27)
shladd r18=r17,3,r14
;;
ld8 r18=[r18] // load normal (heavy-weight) syscall entry-point
- mov r29=psr // read psr (12 cyc load latency)
+ MOV_FROM_PSR(p0, r29, r26) // read psr (12 cyc load latency)
mov r27=ar.rsc
mov r21=ar.fpsr
mov r26=ar.pfs
END(fsys_fallback_syscall)
/* FALL THROUGH */
-GLOBAL_ENTRY(fsys_bubble_down)
+GLOBAL_ENTRY(paravirt_fsys_bubble_down)
.prologue
.altrp b6
.body
@@ -640,7 +641,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
*
* PSR.BE : already is turned off in __kernel_syscall_via_epc()
* PSR.AC : don't care (kernel normally turns PSR.AC on)
- * PSR.I : already turned off by the time fsys_bubble_down gets
+ * PSR.I : already turned off by the time paravirt_fsys_bubble_down gets
* invoked
* PSR.DFL: always 0 (kernel never turns it on)
* PSR.DFH: don't care --- kernel never touches f32-f127 on its own
@@ -650,7 +651,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
* PSR.DB : don't care --- kernel never enables kernel-level
* breakpoints
* PSR.TB : must be 0 already; if it wasn't zero on entry to
- * __kernel_syscall_via_epc, the branch to fsys_bubble_down
+ * __kernel_syscall_via_epc, the branch to paravirt_fsys_bubble_down
* will trigger a taken branch; the taken-trap-handler then
* converts the syscall into a break-based system-call.
*/
@@ -683,7 +684,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
;;
mov ar.rsc=0 // M2 set enforced lazy mode, pl 0, LE, loadrs=0
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
- mov.m r30=ar.itc // M get cycle for accounting
+ MOV_FROM_ITC(p0, p6, r30, r23) // M get cycle for accounting
#else
nop.m 0
#endif
@@ -734,21 +735,21 @@ GLOBAL_ENTRY(fsys_bubble_down)
mov rp=r14 // I0 set the real return addr
and r3=_TIF_SYSCALL_TRACEAUDIT,r3 // A
;;
- ssm psr.i // M2 we're on kernel stacks now, reenable irqs
+ SSM_PSR_I(p0, p6, r22) // M2 we're on kernel stacks now, reenable irqs
cmp.eq p8,p0=r3,r0 // A
(p10) br.cond.spnt.many ia64_ret_from_syscall // B return if bad call-frame or r15 is a NaT
nop.m 0
(p8) br.call.sptk.many b6=b6 // B (ignore return address)
br.cond.spnt ia64_trace_syscall // B
-END(fsys_bubble_down)
+END(paravirt_fsys_bubble_down)
.rodata
.align 8
- .globl fsyscall_table
+ .globl paravirt_fsyscall_table
- data8 fsys_bubble_down
-fsyscall_table:
+ data8 paravirt_fsys_bubble_down
+paravirt_fsyscall_table:
data8 fsys_ni_syscall
data8 0 // exit // 1025
data8 0 // read
@@ -1033,4 +1034,4 @@ fsyscall_table:
// fill in zeros for the remaining entries
.zero:
- .space fsyscall_table + 8*NR_syscalls - .zero, 0
+ .space paravirt_fsyscall_table + 8*NR_syscalls - .zero, 0
diff --git a/arch/ia64/kernel/gate.S b/arch/ia64/kernel/gate.S
index 74b1ccce4e84..cf5e0a105e16 100644
--- a/arch/ia64/kernel/gate.S
+++ b/arch/ia64/kernel/gate.S
@@ -13,6 +13,7 @@
#include <asm/sigcontext.h>
#include <asm/system.h>
#include <asm/unistd.h>
+#include "paravirt_inst.h"
/*
* We can't easily refer to symbols inside the kernel. To avoid full runtime relocation,
@@ -48,87 +49,6 @@ GLOBAL_ENTRY(__kernel_syscall_via_break)
}
END(__kernel_syscall_via_break)
-/*
- * On entry:
- * r11 = saved ar.pfs
- * r15 = system call #
- * b0 = saved return address
- * b6 = return address
- * On exit:
- * r11 = saved ar.pfs
- * r15 = system call #
- * b0 = saved return address
- * all other "scratch" registers: undefined
- * all "preserved" registers: same as on entry
- */
-
-GLOBAL_ENTRY(__kernel_syscall_via_epc)
- .prologue
- .altrp b6
- .body
-{
- /*
- * Note: the kernel cannot assume that the first two instructions in this
- * bundle get executed. The remaining code must be safe even if
- * they do not get executed.
- */
- adds r17=-1024,r15 // A
- mov r10=0 // A default to successful syscall execution
- epc // B causes split-issue
-}
- ;;
- rsm psr.be | psr.i // M2 (5 cyc to srlz.d)
- LOAD_FSYSCALL_TABLE(r14) // X
- ;;
- mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
- shladd r18=r17,3,r14 // A
- mov r19=NR_syscalls-1 // A
- ;;
- lfetch [r18] // M0|1
- mov r29=psr // M2 (12 cyc)
- // If r17 is a NaT, p6 will be zero
- cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
- ;;
- mov r21=ar.fpsr // M2 (12 cyc)
- tnat.nz p10,p9=r15 // I0
- mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
- ;;
- srlz.d // M0 (forces split-issue) ensure PSR.BE==0
-(p6) ld8 r18=[r18] // M0|1
- nop.i 0
- ;;
- nop.m 0
-(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
- nop.i 0
- ;;
-(p8) ssm psr.i
-(p6) mov b7=r18 // I0
-(p8) br.dptk.many b7 // B
-
- mov r27=ar.rsc // M2 (12 cyc)
-/*
- * brl.cond doesn't work as intended because the linker would convert this branch
- * into a branch to a PLT. Perhaps there will be a way to avoid this with some
- * future version of the linker. In the meantime, we just use an indirect branch
- * instead.
- */
-#ifdef CONFIG_ITANIUM
-(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
- ;;
-(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
- ;;
-(p6) mov b7=r14
-(p6) br.sptk.many b7
-#else
- BRL_COND_FSYS_BUBBLE_DOWN(p6)
-#endif
- ssm psr.i
- mov r10=-1
-(p10) mov r8=EINVAL
-(p9) mov r8=ENOSYS
- FSYS_RETURN
-END(__kernel_syscall_via_epc)
-
# define ARG0_OFF (16 + IA64_SIGFRAME_ARG0_OFFSET)
# define ARG1_OFF (16 + IA64_SIGFRAME_ARG1_OFFSET)
# define ARG2_OFF (16 + IA64_SIGFRAME_ARG2_OFFSET)
@@ -374,3 +294,92 @@ restore_rbs:
// invala not necessary as that will happen when returning to user-mode
br.cond.sptk back_from_restore_rbs
END(__kernel_sigtramp)
+
+/*
+ * On entry:
+ * r11 = saved ar.pfs
+ * r15 = system call #
+ * b0 = saved return address
+ * b6 = return address
+ * On exit:
+ * r11 = saved ar.pfs
+ * r15 = system call #
+ * b0 = saved return address
+ * all other "scratch" registers: undefined
+ * all "preserved" registers: same as on entry
+ */
+
+GLOBAL_ENTRY(__kernel_syscall_via_epc)
+ .prologue
+ .altrp b6
+ .body
+{
+ /*
+ * Note: the kernel cannot assume that the first two instructions in this
+ * bundle get executed. The remaining code must be safe even if
+ * they do not get executed.
+ */
+ adds r17=-1024,r15 // A
+ mov r10=0 // A default to successful syscall execution
+ epc // B causes split-issue
+}
+ ;;
+ RSM_PSR_BE_I(r20, r22) // M2 (5 cyc to srlz.d)
+ LOAD_FSYSCALL_TABLE(r14) // X
+ ;;
+ mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
+ shladd r18=r17,3,r14 // A
+ mov r19=NR_syscalls-1 // A
+ ;;
+ lfetch [r18] // M0|1
+ MOV_FROM_PSR(p0, r29, r8) // M2 (12 cyc)
+ // If r17 is a NaT, p6 will be zero
+ cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
+ ;;
+ mov r21=ar.fpsr // M2 (12 cyc)
+ tnat.nz p10,p9=r15 // I0
+ mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
+ ;;
+ srlz.d // M0 (forces split-issue) ensure PSR.BE==0
+(p6) ld8 r18=[r18] // M0|1
+ nop.i 0
+ ;;
+ nop.m 0
+(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
+ nop.i 0
+ ;;
+ SSM_PSR_I(p8, p14, r25)
+(p6) mov b7=r18 // I0
+(p8) br.dptk.many b7 // B
+
+ mov r27=ar.rsc // M2 (12 cyc)
+/*
+ * brl.cond doesn't work as intended because the linker would convert this branch
+ * into a branch to a PLT. Perhaps there will be a way to avoid this with some
+ * future version of the linker. In the meantime, we just use an indirect branch
+ * instead.
+ */
+#ifdef CONFIG_ITANIUM
+(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
+ ;;
+(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
+ ;;
+(p6) mov b7=r14
+(p6) br.sptk.many b7
+#else
+ BRL_COND_FSYS_BUBBLE_DOWN(p6)
+#endif
+ SSM_PSR_I(p0, p14, r10)
+ mov r10=-1
+(p10) mov r8=EINVAL
+(p9) mov r8=ENOSYS
+ FSYS_RETURN
+
+#ifdef CONFIG_PARAVIRT
+ /*
+ * padd to make the size of this symbol constant
+ * independent of paravirtualization.
+ */
+ .align PAGE_SIZE / 8
+#endif
+END(__kernel_syscall_via_epc)
diff --git a/arch/ia64/kernel/gate.lds.S b/arch/ia64/kernel/gate.lds.S
index 3cb1abc00e24..88c64ed47c36 100644
--- a/arch/ia64/kernel/gate.lds.S
+++ b/arch/ia64/kernel/gate.lds.S
@@ -7,6 +7,7 @@
#include <asm/system.h>
+#include "paravirt_patchlist.h"
SECTIONS
{
@@ -33,21 +34,21 @@ SECTIONS
. = GATE_ADDR + 0x600;
.data.patch : {
- __start_gate_mckinley_e9_patchlist = .;
+ __paravirt_start_gate_mckinley_e9_patchlist = .;
*(.data.patch.mckinley_e9)
- __end_gate_mckinley_e9_patchlist = .;
+ __paravirt_end_gate_mckinley_e9_patchlist = .;
- __start_gate_vtop_patchlist = .;
+ __paravirt_start_gate_vtop_patchlist = .;
*(.data.patch.vtop)
- __end_gate_vtop_patchlist = .;
+ __paravirt_end_gate_vtop_patchlist = .;
- __start_gate_fsyscall_patchlist = .;
+ __paravirt_start_gate_fsyscall_patchlist = .;
*(.data.patch.fsyscall_table)
- __end_gate_fsyscall_patchlist = .;
+ __paravirt_end_gate_fsyscall_patchlist = .;
- __start_gate_brl_fsys_bubble_down_patchlist = .;
+ __paravirt_start_gate_brl_fsys_bubble_down_patchlist = .;
*(.data.patch.brl_fsys_bubble_down)
- __end_gate_brl_fsys_bubble_down_patchlist = .;
+ __paravirt_end_gate_brl_fsys_bubble_down_patchlist = .;
} :readable
.IA_64.unwind_info : { *(.IA_64.unwind_info*) }
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 59301c472800..23f846de62d5 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -1050,7 +1050,7 @@ END(ia64_delay_loop)
* except that the multiplication and the shift are done with 128-bit
* intermediate precision so that we can produce a full 64-bit result.
*/
-GLOBAL_ENTRY(sched_clock)
+GLOBAL_ENTRY(ia64_native_sched_clock)
addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
mov.m r9=ar.itc // fetch cycle-counter (35 cyc)
;;
@@ -1066,7 +1066,13 @@ GLOBAL_ENTRY(sched_clock)
;;
shrp r8=r9,r8,IA64_NSEC_PER_CYC_SHIFT
br.ret.sptk.many rp
-END(sched_clock)
+END(ia64_native_sched_clock)
+#ifndef CONFIG_PARAVIRT
+ //unsigned long long
+ //sched_clock(void) __attribute__((alias("ia64_native_sched_clock")));
+ .global sched_clock
+sched_clock = ia64_native_sched_clock
+#endif
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
GLOBAL_ENTRY(cycle_to_cputime)
diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S
index f675d8e33853..ec9a5fdfa1b9 100644
--- a/arch/ia64/kernel/ivt.S
+++ b/arch/ia64/kernel/ivt.S
@@ -804,7 +804,7 @@ ENTRY(break_fault)
///////////////////////////////////////////////////////////////////////
st1 [r16]=r0 // M2|3 clear current->thread.on_ustack flag
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
- mov.m r30=ar.itc // M get cycle for accounting
+ MOV_FROM_ITC(p0, p14, r30, r18) // M get cycle for accounting
#else
mov b6=r30 // I0 setup syscall handler branch reg early
#endif
diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
index aaa7d901521f..34fe4259a144 100644
--- a/arch/ia64/kernel/module.c
+++ b/arch/ia64/kernel/module.c
@@ -446,6 +446,14 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
mod->arch.opd = s;
else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0)
mod->arch.unwind = s;
+#ifdef CONFIG_PARAVIRT
+ else if (strcmp(".paravirt_bundles",
+ secstrings + s->sh_name) == 0)
+ mod->arch.paravirt_bundles = s;
+ else if (strcmp(".paravirt_insts",
+ secstrings + s->sh_name) == 0)
+ mod->arch.paravirt_insts = s;
+#endif
if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) {
printk(KERN_ERR "%s: sections missing\n", mod->name);
@@ -921,6 +929,30 @@ module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mo
DEBUGP("%s: init: entry=%p\n", __func__, mod->init);
if (mod->arch.unwind)
register_unwind_table(mod);
+#ifdef CONFIG_PARAVIRT
+ if (mod->arch.paravirt_bundles) {
+ struct paravirt_patch_site_bundle *start =
+ (struct paravirt_patch_site_bundle *)
+ mod->arch.paravirt_bundles->sh_addr;
+ struct paravirt_patch_site_bundle *end =
+ (struct paravirt_patch_site_bundle *)
+ (mod->arch.paravirt_bundles->sh_addr +
+ mod->arch.paravirt_bundles->sh_size);
+
+ paravirt_patch_apply_bundle(start, end);
+ }
+ if (mod->arch.paravirt_insts) {
+ struct paravirt_patch_site_inst *start =
+ (struct paravirt_patch_site_inst *)
+ mod->arch.paravirt_insts->sh_addr;
+ struct paravirt_patch_site_inst *end =
+ (struct paravirt_patch_site_inst *)
+ (mod->arch.paravirt_insts->sh_addr +
+ mod->arch.paravirt_insts->sh_size);
+
+ paravirt_patch_apply_inst(start, end);
+ }
+#endif
return 0;
}
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index 9f14c16f6369..a21d7bb9c69c 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -46,13 +46,23 @@ struct pv_info pv_info = {
* initialization hooks.
*/
-struct pv_init_ops pv_init_ops;
+static void __init
+ia64_native_patch_branch(unsigned long tag, unsigned long type);
+
+struct pv_init_ops pv_init_ops =
+{
+#ifdef ASM_SUPPORTED
+ .patch_bundle = ia64_native_patch_bundle,
+#endif
+ .patch_branch = ia64_native_patch_branch,
+};
/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
*/
+#ifndef ASM_SUPPORTED
/* ia64_native_xxx are macros so that we have to make them real functions */
#define DEFINE_VOID_FUNC1(name) \
@@ -60,7 +70,14 @@ struct pv_init_ops pv_init_ops;
ia64_native_ ## name ## _func(unsigned long arg) \
{ \
ia64_native_ ## name(arg); \
- } \
+ }
+
+#define DEFINE_VOID_FUNC1_VOID(name) \
+ static void \
+ ia64_native_ ## name ## _func(void *arg) \
+ { \
+ ia64_native_ ## name(arg); \
+ }
#define DEFINE_VOID_FUNC2(name) \
static void \
@@ -68,7 +85,7 @@ struct pv_init_ops pv_init_ops;
unsigned long arg1) \
{ \
ia64_native_ ## name(arg0, arg1); \
- } \
+ }
#define DEFINE_FUNC0(name) \
static unsigned long \
@@ -84,7 +101,7 @@ struct pv_init_ops pv_init_ops;
return ia64_native_ ## name(arg); \
} \
-DEFINE_VOID_FUNC1(fc);
+DEFINE_VOID_FUNC1_VOID(fc);
DEFINE_VOID_FUNC1(intrin_local_irq_restore);
DEFINE_VOID_FUNC2(ptcga);
@@ -274,6 +291,266 @@ ia64_native_setreg_func(int regnum, unsigned long val)
break;
}
}
+#else
+
+#define __DEFINE_FUNC(name, code) \
+ extern const char ia64_native_ ## name ## _direct_start[]; \
+ extern const char ia64_native_ ## name ## _direct_end[]; \
+ asm (".align 32\n" \
+ ".proc ia64_native_" #name "_func\n" \
+ "ia64_native_" #name "_func:\n" \
+ "ia64_native_" #name "_direct_start:\n" \
+ code \
+ "ia64_native_" #name "_direct_end:\n" \
+ "br.cond.sptk.many b6\n" \
+ ".endp ia64_native_" #name "_func\n")
+
+#define DEFINE_VOID_FUNC0(name, code) \
+ extern void \
+ ia64_native_ ## name ## _func(void); \
+ __DEFINE_FUNC(name, code)
+
+#define DEFINE_VOID_FUNC1(name, code) \
+ extern void \
+ ia64_native_ ## name ## _func(unsigned long arg); \
+ __DEFINE_FUNC(name, code)
+
+#define DEFINE_VOID_FUNC1_VOID(name, code) \
+ extern void \
+ ia64_native_ ## name ## _func(void *arg); \
+ __DEFINE_FUNC(name, code)
+
+#define DEFINE_VOID_FUNC2(name, code) \
+ extern void \
+ ia64_native_ ## name ## _func(unsigned long arg0, \
+ unsigned long arg1); \
+ __DEFINE_FUNC(name, code)
+
+#define DEFINE_FUNC0(name, code) \
+ extern unsigned long \
+ ia64_native_ ## name ## _func(void); \
+ __DEFINE_FUNC(name, code)
+
+#define DEFINE_FUNC1(name, type, code) \
+ extern unsigned long \
+ ia64_native_ ## name ## _func(type arg); \
+ __DEFINE_FUNC(name, code)
+
+DEFINE_VOID_FUNC1_VOID(fc,
+ "fc r8\n");
+DEFINE_VOID_FUNC1(intrin_local_irq_restore,
+ ";;\n"
+ " cmp.ne p6, p7 = r8, r0\n"
+ ";;\n"
+ "(p6) ssm psr.i\n"
+ "(p7) rsm psr.i\n"
+ ";;\n"
+ "(p6) srlz.d\n");
+
+DEFINE_VOID_FUNC2(ptcga,
+ "ptc.ga r8, r9\n");
+DEFINE_VOID_FUNC2(set_rr,
+ "mov rr[r8] = r9\n");
+
+/* ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I */
+DEFINE_FUNC0(get_psr_i,
+ "mov r2 = " __stringify(1 << IA64_PSR_I_BIT) "\n"
+ "mov r8 = psr\n"
+ ";;\n"
+ "and r8 = r2, r8\n");
+
+DEFINE_FUNC1(thash, unsigned long,
+ "thash r8 = r8\n");
+DEFINE_FUNC1(get_cpuid, int,
+ "mov r8 = cpuid[r8]\n");
+DEFINE_FUNC1(get_pmd, int,
+ "mov r8 = pmd[r8]\n");
+DEFINE_FUNC1(get_rr, unsigned long,
+ "mov r8 = rr[r8]\n");
+
+DEFINE_VOID_FUNC0(ssm_i,
+ "ssm psr.i\n");
+DEFINE_VOID_FUNC0(rsm_i,
+ "rsm psr.i\n");
+
+extern void
+ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
+ unsigned long val2, unsigned long val3,
+ unsigned long val4);
+__DEFINE_FUNC(set_rr0_to_rr4,
+ "mov rr[r0] = r8\n"
+ "movl r2 = 0x2000000000000000\n"
+ ";;\n"
+ "mov rr[r2] = r9\n"
+ "shl r3 = r2, 1\n" /* movl r3 = 0x4000000000000000 */
+ ";;\n"
+ "add r2 = r2, r3\n" /* movl r2 = 0x6000000000000000 */
+ "mov rr[r3] = r10\n"
+ ";;\n"
+ "mov rr[r2] = r11\n"
+ "shl r3 = r3, 1\n" /* movl r3 = 0x8000000000000000 */
+ ";;\n"
+ "mov rr[r3] = r14\n");
+
+extern unsigned long ia64_native_getreg_func(int regnum);
+asm(".global ia64_native_getreg_func\n");
+#define __DEFINE_GET_REG(id, reg) \
+ "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
+ ";;\n" \
+ "cmp.eq p6, p0 = r2, r8\n" \
+ ";;\n" \
+ "(p6) mov r8 = " #reg "\n" \
+ "(p6) br.cond.sptk.many b6\n" \
+ ";;\n"
+#define __DEFINE_GET_AR(id, reg) __DEFINE_GET_REG(AR_ ## id, ar.reg)
+#define __DEFINE_GET_CR(id, reg) __DEFINE_GET_REG(CR_ ## id, cr.reg)
+
+__DEFINE_FUNC(getreg,
+ __DEFINE_GET_REG(GP, gp)
+ /*__DEFINE_GET_REG(IP, ip)*/ /* returned ip value shouldn't be constant */
+ __DEFINE_GET_REG(PSR, psr)
+ __DEFINE_GET_REG(TP, tp)
+ __DEFINE_GET_REG(SP, sp)
+
+ __DEFINE_GET_REG(AR_KR0, ar0)
+ __DEFINE_GET_REG(AR_KR1, ar1)
+ __DEFINE_GET_REG(AR_KR2, ar2)
+ __DEFINE_GET_REG(AR_KR3, ar3)
+ __DEFINE_GET_REG(AR_KR4, ar4)
+ __DEFINE_GET_REG(AR_KR5, ar5)
+ __DEFINE_GET_REG(AR_KR6, ar6)
+ __DEFINE_GET_REG(AR_KR7, ar7)
+ __DEFINE_GET_AR(RSC, rsc)
+ __DEFINE_GET_AR(BSP, bsp)
+ __DEFINE_GET_AR(BSPSTORE, bspstore)
+ __DEFINE_GET_AR(RNAT, rnat)
+ __DEFINE_GET_AR(FCR, fcr)
+ __DEFINE_GET_AR(EFLAG, eflag)
+ __DEFINE_GET_AR(CSD, csd)
+ __DEFINE_GET_AR(SSD, ssd)
+ __DEFINE_GET_REG(AR_CFLAG, ar27)
+ __DEFINE_GET_AR(FSR, fsr)
+ __DEFINE_GET_AR(FIR, fir)
+ __DEFINE_GET_AR(FDR, fdr)
+ __DEFINE_GET_AR(CCV, ccv)
+ __DEFINE_GET_AR(UNAT, unat)
+ __DEFINE_GET_AR(FPSR, fpsr)
+ __DEFINE_GET_AR(ITC, itc)
+ __DEFINE_GET_AR(PFS, pfs)
+ __DEFINE_GET_AR(LC, lc)
+ __DEFINE_GET_AR(EC, ec)
+
+ __DEFINE_GET_CR(DCR, dcr)
+ __DEFINE_GET_CR(ITM, itm)
+ __DEFINE_GET_CR(IVA, iva)
+ __DEFINE_GET_CR(PTA, pta)
+ __DEFINE_GET_CR(IPSR, ipsr)
+ __DEFINE_GET_CR(ISR, isr)
+ __DEFINE_GET_CR(IIP, iip)
+ __DEFINE_GET_CR(IFA, ifa)
+ __DEFINE_GET_CR(ITIR, itir)
+ __DEFINE_GET_CR(IIPA, iipa)
+ __DEFINE_GET_CR(IFS, ifs)
+ __DEFINE_GET_CR(IIM, iim)
+ __DEFINE_GET_CR(IHA, iha)
+ __DEFINE_GET_CR(LID, lid)
+ __DEFINE_GET_CR(IVR, ivr)
+ __DEFINE_GET_CR(TPR, tpr)
+ __DEFINE_GET_CR(EOI, eoi)
+ __DEFINE_GET_CR(IRR0, irr0)
+ __DEFINE_GET_CR(IRR1, irr1)
+ __DEFINE_GET_CR(IRR2, irr2)
+ __DEFINE_GET_CR(IRR3, irr3)
+ __DEFINE_GET_CR(ITV, itv)
+ __DEFINE_GET_CR(PMV, pmv)
+ __DEFINE_GET_CR(CMCV, cmcv)
+ __DEFINE_GET_CR(LRR0, lrr0)
+ __DEFINE_GET_CR(LRR1, lrr1)
+
+ "mov r8 = -1\n" /* unsupported case */
+ );
+
+extern void ia64_native_setreg_func(int regnum, unsigned long val);
+asm(".global ia64_native_setreg_func\n");
+#define __DEFINE_SET_REG(id, reg) \
+ "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
+ ";;\n" \
+ "cmp.eq p6, p0 = r2, r9\n" \
+ ";;\n" \
+ "(p6) mov " #reg " = r8\n" \
+ "(p6) br.cond.sptk.many b6\n" \
+ ";;\n"
+#define __DEFINE_SET_AR(id, reg) __DEFINE_SET_REG(AR_ ## id, ar.reg)
+#define __DEFINE_SET_CR(id, reg) __DEFINE_SET_REG(CR_ ## id, cr.reg)
+__DEFINE_FUNC(setreg,
+ "mov r2 = " __stringify(_IA64_REG_PSR_L) "\n"
+ ";;\n"
+ "cmp.eq p6, p0 = r2, r9\n"
+ ";;\n"
+ "(p6) mov psr.l = r8\n"
+#ifdef HAVE_SERIALIZE_DIRECTIVE
+ ".serialize.data\n"
+#endif
+ "(p6) br.cond.sptk.many b6\n"
+ __DEFINE_SET_REG(GP, gp)
+ __DEFINE_SET_REG(SP, sp)
+
+ __DEFINE_SET_REG(AR_KR0, ar0)
+ __DEFINE_SET_REG(AR_KR1, ar1)
+ __DEFINE_SET_REG(AR_KR2, ar2)
+ __DEFINE_SET_REG(AR_KR3, ar3)
+ __DEFINE_SET_REG(AR_KR4, ar4)
+ __DEFINE_SET_REG(AR_KR5, ar5)
+ __DEFINE_SET_REG(AR_KR6, ar6)
+ __DEFINE_SET_REG(AR_KR7, ar7)
+ __DEFINE_SET_AR(RSC, rsc)
+ __DEFINE_SET_AR(BSP, bsp)
+ __DEFINE_SET_AR(BSPSTORE, bspstore)
+ __DEFINE_SET_AR(RNAT, rnat)
+ __DEFINE_SET_AR(FCR, fcr)
+ __DEFINE_SET_AR(EFLAG, eflag)
+ __DEFINE_SET_AR(CSD, csd)
+ __DEFINE_SET_AR(SSD, ssd)
+ __DEFINE_SET_REG(AR_CFLAG, ar27)
+ __DEFINE_SET_AR(FSR, fsr)
+ __DEFINE_SET_AR(FIR, fir)
+ __DEFINE_SET_AR(FDR, fdr)
+ __DEFINE_SET_AR(CCV, ccv)
+ __DEFINE_SET_AR(UNAT, unat)
+ __DEFINE_SET_AR(FPSR, fpsr)
+ __DEFINE_SET_AR(ITC, itc)
+ __DEFINE_SET_AR(PFS, pfs)
+ __DEFINE_SET_AR(LC, lc)
+ __DEFINE_SET_AR(EC, ec)
+
+ __DEFINE_SET_CR(DCR, dcr)
+ __DEFINE_SET_CR(ITM, itm)
+ __DEFINE_SET_CR(IVA, iva)
+ __DEFINE_SET_CR(PTA, pta)
+ __DEFINE_SET_CR(IPSR, ipsr)
+ __DEFINE_SET_CR(ISR, isr)
+ __DEFINE_SET_CR(IIP, iip)
+ __DEFINE_SET_CR(IFA, ifa)
+ __DEFINE_SET_CR(ITIR, itir)
+ __DEFINE_SET_CR(IIPA, iipa)
+ __DEFINE_SET_CR(IFS, ifs)
+ __DEFINE_SET_CR(IIM, iim)
+ __DEFINE_SET_CR(IHA, iha)
+ __DEFINE_SET_CR(LID, lid)
+ __DEFINE_SET_CR(IVR, ivr)
+ __DEFINE_SET_CR(TPR, tpr)
+ __DEFINE_SET_CR(EOI, eoi)
+ __DEFINE_SET_CR(IRR0, irr0)
+ __DEFINE_SET_CR(IRR1, irr1)
+ __DEFINE_SET_CR(IRR2, irr2)
+ __DEFINE_SET_CR(IRR3, irr3)
+ __DEFINE_SET_CR(ITV, itv)
+ __DEFINE_SET_CR(PMV, pmv)
+ __DEFINE_SET_CR(CMCV, cmcv)
+ __DEFINE_SET_CR(LRR0, lrr0)
+ __DEFINE_SET_CR(LRR1, lrr1)
+ );
+#endif
struct pv_cpu_ops pv_cpu_ops = {
.fc = ia64_native_fc_func,
@@ -366,4 +643,258 @@ ia64_native_do_steal_accounting(unsigned long *new_itm)
struct pv_time_ops pv_time_ops = {
.do_steal_accounting = ia64_native_do_steal_accounting,
+ .sched_clock = ia64_native_sched_clock,
+};
+
+/***************************************************************************
+ * binary pacthing
+ * pv_init_ops.patch_bundle
+ */
+
+#ifdef ASM_SUPPORTED
+#define IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg) \
+ __DEFINE_FUNC(get_ ## name, \
+ ";;\n" \
+ "mov r8 = " #reg "\n" \
+ ";;\n")
+
+#define IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
+ __DEFINE_FUNC(set_ ## name, \
+ ";;\n" \
+ "mov " #reg " = r8\n" \
+ ";;\n")
+
+#define IA64_NATIVE_PATCH_DEFINE_REG(name, reg) \
+ IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg); \
+ IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
+
+#define IA64_NATIVE_PATCH_DEFINE_AR(name, reg) \
+ IA64_NATIVE_PATCH_DEFINE_REG(ar_ ## name, ar.reg)
+
+#define IA64_NATIVE_PATCH_DEFINE_CR(name, reg) \
+ IA64_NATIVE_PATCH_DEFINE_REG(cr_ ## name, cr.reg)
+
+
+IA64_NATIVE_PATCH_DEFINE_GET_REG(psr, psr);
+IA64_NATIVE_PATCH_DEFINE_GET_REG(tp, tp);
+
+/* IA64_NATIVE_PATCH_DEFINE_SET_REG(psr_l, psr.l); */
+__DEFINE_FUNC(set_psr_l,
+ ";;\n"
+ "mov psr.l = r8\n"
+#ifdef HAVE_SERIALIZE_DIRECTIVE
+ ".serialize.data\n"
+#endif
+ ";;\n");
+
+IA64_NATIVE_PATCH_DEFINE_REG(gp, gp);
+IA64_NATIVE_PATCH_DEFINE_REG(sp, sp);
+
+IA64_NATIVE_PATCH_DEFINE_REG(kr0, ar0);
+IA64_NATIVE_PATCH_DEFINE_REG(kr1, ar1);
+IA64_NATIVE_PATCH_DEFINE_REG(kr2, ar2);
+IA64_NATIVE_PATCH_DEFINE_REG(kr3, ar3);
+IA64_NATIVE_PATCH_DEFINE_REG(kr4, ar4);
+IA64_NATIVE_PATCH_DEFINE_REG(kr5, ar5);
+IA64_NATIVE_PATCH_DEFINE_REG(kr6, ar6);
+IA64_NATIVE_PATCH_DEFINE_REG(kr7, ar7);
+
+IA64_NATIVE_PATCH_DEFINE_AR(rsc, rsc);
+IA64_NATIVE_PATCH_DEFINE_AR(bsp, bsp);
+IA64_NATIVE_PATCH_DEFINE_AR(bspstore, bspstore);
+IA64_NATIVE_PATCH_DEFINE_AR(rnat, rnat);
+IA64_NATIVE_PATCH_DEFINE_AR(fcr, fcr);
+IA64_NATIVE_PATCH_DEFINE_AR(eflag, eflag);
+IA64_NATIVE_PATCH_DEFINE_AR(csd, csd);
+IA64_NATIVE_PATCH_DEFINE_AR(ssd, ssd);
+IA64_NATIVE_PATCH_DEFINE_REG(ar27, ar27);
+IA64_NATIVE_PATCH_DEFINE_AR(fsr, fsr);
+IA64_NATIVE_PATCH_DEFINE_AR(fir, fir);
+IA64_NATIVE_PATCH_DEFINE_AR(fdr, fdr);
+IA64_NATIVE_PATCH_DEFINE_AR(ccv, ccv);
+IA64_NATIVE_PATCH_DEFINE_AR(unat, unat);
+IA64_NATIVE_PATCH_DEFINE_AR(fpsr, fpsr);
+IA64_NATIVE_PATCH_DEFINE_AR(itc, itc);
+IA64_NATIVE_PATCH_DEFINE_AR(pfs, pfs);
+IA64_NATIVE_PATCH_DEFINE_AR(lc, lc);
+IA64_NATIVE_PATCH_DEFINE_AR(ec, ec);
+
+IA64_NATIVE_PATCH_DEFINE_CR(dcr, dcr);
+IA64_NATIVE_PATCH_DEFINE_CR(itm, itm);
+IA64_NATIVE_PATCH_DEFINE_CR(iva, iva);
+IA64_NATIVE_PATCH_DEFINE_CR(pta, pta);
+IA64_NATIVE_PATCH_DEFINE_CR(ipsr, ipsr);
+IA64_NATIVE_PATCH_DEFINE_CR(isr, isr);
+IA64_NATIVE_PATCH_DEFINE_CR(iip, iip);
+IA64_NATIVE_PATCH_DEFINE_CR(ifa, ifa);
+IA64_NATIVE_PATCH_DEFINE_CR(itir, itir);
+IA64_NATIVE_PATCH_DEFINE_CR(iipa, iipa);
+IA64_NATIVE_PATCH_DEFINE_CR(ifs, ifs);
+IA64_NATIVE_PATCH_DEFINE_CR(iim, iim);
+IA64_NATIVE_PATCH_DEFINE_CR(iha, iha);
+IA64_NATIVE_PATCH_DEFINE_CR(lid, lid);
+IA64_NATIVE_PATCH_DEFINE_CR(ivr, ivr);
+IA64_NATIVE_PATCH_DEFINE_CR(tpr, tpr);
+IA64_NATIVE_PATCH_DEFINE_CR(eoi, eoi);
+IA64_NATIVE_PATCH_DEFINE_CR(irr0, irr0);
+IA64_NATIVE_PATCH_DEFINE_CR(irr1, irr1);
+IA64_NATIVE_PATCH_DEFINE_CR(irr2, irr2);
+IA64_NATIVE_PATCH_DEFINE_CR(irr3, irr3);
+IA64_NATIVE_PATCH_DEFINE_CR(itv, itv);
+IA64_NATIVE_PATCH_DEFINE_CR(pmv, pmv);
+IA64_NATIVE_PATCH_DEFINE_CR(cmcv, cmcv);
+IA64_NATIVE_PATCH_DEFINE_CR(lrr0, lrr0);
+IA64_NATIVE_PATCH_DEFINE_CR(lrr1, lrr1);
+
+static const struct paravirt_patch_bundle_elem ia64_native_patch_bundle_elems[]
+__initdata_or_module =
+{
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM(name, type) \
+ { \
+ (void*)ia64_native_ ## name ## _direct_start, \
+ (void*)ia64_native_ ## name ## _direct_end, \
+ PARAVIRT_PATCH_TYPE_ ## type, \
+ }
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(fc, FC),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(thash, THASH),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM(intrin_local_irq_restore,
+ INTRIN_LOCAL_IRQ_RESTORE),
+
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
+ { \
+ (void*)ia64_native_get_ ## name ## _direct_start, \
+ (void*)ia64_native_get_ ## name ## _direct_end, \
+ PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
+ }
+
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
+ { \
+ (void*)ia64_native_set_ ## name ## _direct_start, \
+ (void*)ia64_native_set_ ## name ## _direct_end, \
+ PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
+ }
+
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(name, reg) \
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg), \
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
+
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(name, reg) \
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar_ ## name, AR_ ## reg)
+
+#define IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(name, reg) \
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(cr_ ## name, CR_ ## reg)
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(tp, TP),
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(psr_l, PSR_L),
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(gp, GP),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(sp, SP),
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr0, AR_KR0),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr1, AR_KR1),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr2, AR_KR2),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr3, AR_KR3),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr4, AR_KR4),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr5, AR_KR5),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr6, AR_KR6),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr7, AR_KR7),
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rsc, RSC),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bsp, BSP),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bspstore, BSPSTORE),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rnat, RNAT),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fcr, FCR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(eflag, EFLAG),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(csd, CSD),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ssd, SSD),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar27, AR_CFLAG),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fsr, FSR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fir, FIR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fdr, FDR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ccv, CCV),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(unat, UNAT),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fpsr, FPSR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(itc, ITC),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(pfs, PFS),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(lc, LC),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ec, EC),
+
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(dcr, DCR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itm, ITM),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iva, IVA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pta, PTA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ipsr, IPSR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(isr, ISR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iip, IIP),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifa, IFA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itir, ITIR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iipa, IIPA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifs, IFS),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iim, IIM),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iha, IHA),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lid, LID),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ivr, IVR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(tpr, TPR),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(eoi, EOI),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr0, IRR0),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr1, IRR1),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr2, IRR2),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr3, IRR3),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itv, ITV),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pmv, PMV),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(cmcv, CMCV),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr0, LRR0),
+ IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr1, LRR1),
};
+
+unsigned long __init_or_module
+ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
+{
+ const unsigned long nelems = sizeof(ia64_native_patch_bundle_elems) /
+ sizeof(ia64_native_patch_bundle_elems[0]);
+
+ return __paravirt_patch_apply_bundle(sbundle, ebundle, type,
+ ia64_native_patch_bundle_elems,
+ nelems, NULL);
+}
+#endif /* ASM_SUPPOTED */
+
+extern const char ia64_native_switch_to[];
+extern const char ia64_native_leave_syscall[];
+extern const char ia64_native_work_processed_syscall[];
+extern const char ia64_native_leave_kernel[];
+
+const struct paravirt_patch_branch_target ia64_native_branch_target[]
+__initconst = {
+#define PARAVIRT_BR_TARGET(name, type) \
+ { \
+ ia64_native_ ## name, \
+ PARAVIRT_PATCH_TYPE_BR_ ## type, \
+ }
+ PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
+ PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
+ PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
+ PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
+};
+
+static void __init
+ia64_native_patch_branch(unsigned long tag, unsigned long type)
+{
+ const unsigned long nelem =
+ sizeof(ia64_native_branch_target) /
+ sizeof(ia64_native_branch_target[0]);
+ __paravirt_patch_apply_branch(tag, type,
+ ia64_native_branch_target, nelem);
+}
diff --git a/arch/ia64/kernel/paravirt_patch.c b/arch/ia64/kernel/paravirt_patch.c
new file mode 100644
index 000000000000..bfdfef1b1ffd
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patch.c
@@ -0,0 +1,514 @@
+/******************************************************************************
+ * linux/arch/ia64/xen/paravirt_patch.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <asm/intrinsics.h>
+#include <asm/kprobes.h>
+#include <asm/paravirt.h>
+#include <asm/paravirt_patch.h>
+
+typedef union ia64_inst {
+ struct {
+ unsigned long long qp : 6;
+ unsigned long long : 31;
+ unsigned long long opcode : 4;
+ unsigned long long reserved : 23;
+ } generic;
+ unsigned long long l;
+} ia64_inst_t;
+
+/*
+ * flush_icache_range() can't be used here.
+ * we are here before cpu_init() which initializes
+ * ia64_i_cache_stride_shift. flush_icache_range() uses it.
+ */
+void __init_or_module
+paravirt_flush_i_cache_range(const void *instr, unsigned long size)
+{
+ extern void paravirt_fc_i(const void *addr);
+ unsigned long i;
+
+ for (i = 0; i < size; i += sizeof(bundle_t))
+ paravirt_fc_i(instr + i);
+}
+
+bundle_t* __init_or_module
+paravirt_get_bundle(unsigned long tag)
+{
+ return (bundle_t *)(tag & ~3UL);
+}
+
+unsigned long __init_or_module
+paravirt_get_slot(unsigned long tag)
+{
+ return tag & 3UL;
+}
+
+unsigned long __init_or_module
+paravirt_get_num_inst(unsigned long stag, unsigned long etag)
+{
+ bundle_t *sbundle = paravirt_get_bundle(stag);
+ unsigned long sslot = paravirt_get_slot(stag);
+ bundle_t *ebundle = paravirt_get_bundle(etag);
+ unsigned long eslot = paravirt_get_slot(etag);
+
+ return (ebundle - sbundle) * 3 + eslot - sslot + 1;
+}
+
+unsigned long __init_or_module
+paravirt_get_next_tag(unsigned long tag)
+{
+ unsigned long slot = paravirt_get_slot(tag);
+
+ switch (slot) {
+ case 0:
+ case 1:
+ return tag + 1;
+ case 2: {
+ bundle_t *bundle = paravirt_get_bundle(tag);
+ return (unsigned long)(bundle + 1);
+ }
+ default:
+ BUG();
+ }
+ /* NOTREACHED */
+}
+
+ia64_inst_t __init_or_module
+paravirt_read_slot0(const bundle_t *bundle)
+{
+ ia64_inst_t inst;
+ inst.l = bundle->quad0.slot0;
+ return inst;
+}
+
+ia64_inst_t __init_or_module
+paravirt_read_slot1(const bundle_t *bundle)
+{
+ ia64_inst_t inst;
+ inst.l = bundle->quad0.slot1_p0 |
+ ((unsigned long long)bundle->quad1.slot1_p1 << 18UL);
+ return inst;
+}
+
+ia64_inst_t __init_or_module
+paravirt_read_slot2(const bundle_t *bundle)
+{
+ ia64_inst_t inst;
+ inst.l = bundle->quad1.slot2;
+ return inst;
+}
+
+ia64_inst_t __init_or_module
+paravirt_read_inst(unsigned long tag)
+{
+ bundle_t *bundle = paravirt_get_bundle(tag);
+ unsigned long slot = paravirt_get_slot(tag);
+
+ switch (slot) {
+ case 0:
+ return paravirt_read_slot0(bundle);
+ case 1:
+ return paravirt_read_slot1(bundle);
+ case 2:
+ return paravirt_read_slot2(bundle);
+ default:
+ BUG();
+ }
+ /* NOTREACHED */
+}
+
+void __init_or_module
+paravirt_write_slot0(bundle_t *bundle, ia64_inst_t inst)
+{
+ bundle->quad0.slot0 = inst.l;
+}
+
+void __init_or_module
+paravirt_write_slot1(bundle_t *bundle, ia64_inst_t inst)
+{
+ bundle->quad0.slot1_p0 = inst.l;
+ bundle->quad1.slot1_p1 = inst.l >> 18UL;
+}
+
+void __init_or_module
+paravirt_write_slot2(bundle_t *bundle, ia64_inst_t inst)
+{
+ bundle->quad1.slot2 = inst.l;
+}
+
+void __init_or_module
+paravirt_write_inst(unsigned long tag, ia64_inst_t inst)
+{
+ bundle_t *bundle = paravirt_get_bundle(tag);
+ unsigned long slot = paravirt_get_slot(tag);
+
+ switch (slot) {
+ case 0:
+ paravirt_write_slot0(bundle, inst);
+ break;
+ case 1:
+ paravirt_write_slot1(bundle, inst);
+ break;
+ case 2:
+ paravirt_write_slot2(bundle, inst);
+ break;
+ default:
+ BUG();
+ break;
+ }
+ paravirt_flush_i_cache_range(bundle, sizeof(*bundle));
+}
+
+/* for debug */
+void
+paravirt_print_bundle(const bundle_t *bundle)
+{
+ const unsigned long *quad = (const unsigned long *)bundle;
+ ia64_inst_t slot0 = paravirt_read_slot0(bundle);
+ ia64_inst_t slot1 = paravirt_read_slot1(bundle);
+ ia64_inst_t slot2 = paravirt_read_slot2(bundle);
+
+ printk(KERN_DEBUG
+ "bundle 0x%p 0x%016lx 0x%016lx\n", bundle, quad[0], quad[1]);
+ printk(KERN_DEBUG
+ "bundle template 0x%x\n",
+ bundle->quad0.template);
+ printk(KERN_DEBUG
+ "slot0 0x%lx slot1_p0 0x%lx slot1_p1 0x%lx slot2 0x%lx\n",
+ (unsigned long)bundle->quad0.slot0,
+ (unsigned long)bundle->quad0.slot1_p0,
+ (unsigned long)bundle->quad1.slot1_p1,
+ (unsigned long)bundle->quad1.slot2);
+ printk(KERN_DEBUG
+ "slot0 0x%016llx slot1 0x%016llx slot2 0x%016llx\n",
+ slot0.l, slot1.l, slot2.l);
+}
+
+static int noreplace_paravirt __init_or_module = 0;
+
+static int __init setup_noreplace_paravirt(char *str)
+{
+ noreplace_paravirt = 1;
+ return 1;
+}
+__setup("noreplace-paravirt", setup_noreplace_paravirt);
+
+#ifdef ASM_SUPPORTED
+static void __init_or_module
+fill_nop_bundle(void *sbundle, void *ebundle)
+{
+ extern const char paravirt_nop_bundle[];
+ extern const unsigned long paravirt_nop_bundle_size;
+
+ void *bundle = sbundle;
+
+ BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
+ BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
+
+ while (bundle < ebundle) {
+ memcpy(bundle, paravirt_nop_bundle, paravirt_nop_bundle_size);
+
+ bundle += paravirt_nop_bundle_size;
+ }
+}
+
+/* helper function */
+unsigned long __init_or_module
+__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
+ const struct paravirt_patch_bundle_elem *elems,
+ unsigned long nelems,
+ const struct paravirt_patch_bundle_elem **found)
+{
+ unsigned long used = 0;
+ unsigned long i;
+
+ BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
+ BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
+
+ found = NULL;
+ for (i = 0; i < nelems; i++) {
+ const struct paravirt_patch_bundle_elem *p = &elems[i];
+ if (p->type == type) {
+ unsigned long need = p->ebundle - p->sbundle;
+ unsigned long room = ebundle - sbundle;
+
+ if (found != NULL)
+ *found = p;
+
+ if (room < need) {
+ /* no room to replace. skip it */
+ printk(KERN_DEBUG
+ "the space is too small to put "
+ "bundles. type %ld need %ld room %ld\n",
+ type, need, room);
+ break;
+ }
+
+ used = need;
+ memcpy(sbundle, p->sbundle, used);
+ break;
+ }
+ }
+
+ return used;
+}
+
+void __init_or_module
+paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
+ const struct paravirt_patch_site_bundle *end)
+{
+ const struct paravirt_patch_site_bundle *p;
+
+ if (noreplace_paravirt)
+ return;
+ if (pv_init_ops.patch_bundle == NULL)
+ return;
+
+ for (p = start; p < end; p++) {
+ unsigned long used;
+
+ used = (*pv_init_ops.patch_bundle)(p->sbundle, p->ebundle,
+ p->type);
+ if (used == 0)
+ continue;
+
+ fill_nop_bundle(p->sbundle + used, p->ebundle);
+ paravirt_flush_i_cache_range(p->sbundle,
+ p->ebundle - p->sbundle);
+ }
+ ia64_sync_i();
+ ia64_srlz_i();
+}
+
+/*
+ * nop.i, nop.m, nop.f instruction are same format.
+ * but nop.b has differennt format.
+ * This doesn't support nop.b for now.
+ */
+static void __init_or_module
+fill_nop_inst(unsigned long stag, unsigned long etag)
+{
+ extern const bundle_t paravirt_nop_mfi_inst_bundle[];
+ unsigned long tag;
+ const ia64_inst_t nop_inst =
+ paravirt_read_slot0(paravirt_nop_mfi_inst_bundle);
+
+ for (tag = stag; tag < etag; tag = paravirt_get_next_tag(tag))
+ paravirt_write_inst(tag, nop_inst);
+}
+
+void __init_or_module
+paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
+ const struct paravirt_patch_site_inst *end)
+{
+ const struct paravirt_patch_site_inst *p;
+
+ if (noreplace_paravirt)
+ return;
+ if (pv_init_ops.patch_inst == NULL)
+ return;
+
+ for (p = start; p < end; p++) {
+ unsigned long tag;
+ bundle_t *sbundle;
+ bundle_t *ebundle;
+
+ tag = (*pv_init_ops.patch_inst)(p->stag, p->etag, p->type);
+ if (tag == p->stag)
+ continue;
+
+ fill_nop_inst(tag, p->etag);
+ sbundle = paravirt_get_bundle(p->stag);
+ ebundle = paravirt_get_bundle(p->etag) + 1;
+ paravirt_flush_i_cache_range(sbundle, (ebundle - sbundle) *
+ sizeof(bundle_t));
+ }
+ ia64_sync_i();
+ ia64_srlz_i();
+}
+#endif /* ASM_SUPPOTED */
+
+/* brl.cond.sptk.many <target64> X3 */
+typedef union inst_x3_op {
+ ia64_inst_t inst;
+ struct {
+ unsigned long qp: 6;
+ unsigned long btyp: 3;
+ unsigned long unused: 3;
+ unsigned long p: 1;
+ unsigned long imm20b: 20;
+ unsigned long wh: 2;
+ unsigned long d: 1;
+ unsigned long i: 1;
+ unsigned long opcode: 4;
+ };
+ unsigned long l;
+} inst_x3_op_t;
+
+typedef union inst_x3_imm {
+ ia64_inst_t inst;
+ struct {
+ unsigned long unused: 2;
+ unsigned long imm39: 39;
+ };
+ unsigned long l;
+} inst_x3_imm_t;
+
+void __init_or_module
+paravirt_patch_reloc_brl(unsigned long tag, const void *target)
+{
+ unsigned long tag_op = paravirt_get_next_tag(tag);
+ unsigned long tag_imm = tag;
+ bundle_t *bundle = paravirt_get_bundle(tag);
+
+ ia64_inst_t inst_op = paravirt_read_inst(tag_op);
+ ia64_inst_t inst_imm = paravirt_read_inst(tag_imm);
+
+ inst_x3_op_t inst_x3_op = { .l = inst_op.l };
+ inst_x3_imm_t inst_x3_imm = { .l = inst_imm.l };
+
+ unsigned long imm60 =
+ ((unsigned long)target - (unsigned long)bundle) >> 4;
+
+ BUG_ON(paravirt_get_slot(tag) != 1); /* MLX */
+ BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
+
+ /* imm60[59] 1bit */
+ inst_x3_op.i = (imm60 >> 59) & 1;
+ /* imm60[19:0] 20bit */
+ inst_x3_op.imm20b = imm60 & ((1UL << 20) - 1);
+ /* imm60[58:20] 39bit */
+ inst_x3_imm.imm39 = (imm60 >> 20) & ((1UL << 39) - 1);
+
+ inst_op.l = inst_x3_op.l;
+ inst_imm.l = inst_x3_imm.l;
+
+ paravirt_write_inst(tag_op, inst_op);
+ paravirt_write_inst(tag_imm, inst_imm);
+}
+
+/* br.cond.sptk.many <target25> B1 */
+typedef union inst_b1 {
+ ia64_inst_t inst;
+ struct {
+ unsigned long qp: 6;
+ unsigned long btype: 3;
+ unsigned long unused: 3;
+ unsigned long p: 1;
+ unsigned long imm20b: 20;
+ unsigned long wh: 2;
+ unsigned long d: 1;
+ unsigned long s: 1;
+ unsigned long opcode: 4;
+ };
+ unsigned long l;
+} inst_b1_t;
+
+void __init
+paravirt_patch_reloc_br(unsigned long tag, const void *target)
+{
+ bundle_t *bundle = paravirt_get_bundle(tag);
+ ia64_inst_t inst = paravirt_read_inst(tag);
+ unsigned long target25 = (unsigned long)target - (unsigned long)bundle;
+ inst_b1_t inst_b1;
+
+ BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
+
+ inst_b1.l = inst.l;
+ if (target25 & (1UL << 63))
+ inst_b1.s = 1;
+ else
+ inst_b1.s = 0;
+
+ inst_b1.imm20b = target25 >> 4;
+ inst.l = inst_b1.l;
+
+ paravirt_write_inst(tag, inst);
+}
+
+void __init
+__paravirt_patch_apply_branch(
+ unsigned long tag, unsigned long type,
+ const struct paravirt_patch_branch_target *entries,
+ unsigned int nr_entries)
+{
+ unsigned int i;
+ for (i = 0; i < nr_entries; i++) {
+ if (entries[i].type == type) {
+ paravirt_patch_reloc_br(tag, entries[i].entry);
+ break;
+ }
+ }
+}
+
+static void __init
+paravirt_patch_apply_branch(const struct paravirt_patch_site_branch *start,
+ const struct paravirt_patch_site_branch *end)
+{
+ const struct paravirt_patch_site_branch *p;
+
+ if (noreplace_paravirt)
+ return;
+ if (pv_init_ops.patch_branch == NULL)
+ return;
+
+ for (p = start; p < end; p++)
+ (*pv_init_ops.patch_branch)(p->tag, p->type);
+
+ ia64_sync_i();
+ ia64_srlz_i();
+}
+
+void __init
+paravirt_patch_apply(void)
+{
+ extern const char __start_paravirt_bundles[];
+ extern const char __stop_paravirt_bundles[];
+ extern const char __start_paravirt_insts[];
+ extern const char __stop_paravirt_insts[];
+ extern const char __start_paravirt_branches[];
+ extern const char __stop_paravirt_branches[];
+
+ paravirt_patch_apply_bundle((const struct paravirt_patch_site_bundle *)
+ __start_paravirt_bundles,
+ (const struct paravirt_patch_site_bundle *)
+ __stop_paravirt_bundles);
+ paravirt_patch_apply_inst((const struct paravirt_patch_site_inst *)
+ __start_paravirt_insts,
+ (const struct paravirt_patch_site_inst *)
+ __stop_paravirt_insts);
+ paravirt_patch_apply_branch((const struct paravirt_patch_site_branch *)
+ __start_paravirt_branches,
+ (const struct paravirt_patch_site_branch *)
+ __stop_paravirt_branches);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "linux"
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ */
diff --git a/arch/ia64/kernel/paravirt_patchlist.c b/arch/ia64/kernel/paravirt_patchlist.c
new file mode 100644
index 000000000000..b28082a95d45
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patchlist.c
@@ -0,0 +1,79 @@
+/******************************************************************************
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/bug.h>
+#include <asm/paravirt.h>
+
+#define DECLARE(name) \
+ extern unsigned long \
+ __ia64_native_start_gate_##name##_patchlist[]; \
+ extern unsigned long \
+ __ia64_native_end_gate_##name##_patchlist[]
+
+DECLARE(fsyscall);
+DECLARE(brl_fsys_bubble_down);
+DECLARE(vtop);
+DECLARE(mckinley_e9);
+
+extern unsigned long __start_gate_section[];
+
+#define ASSIGN(name) \
+ .start_##name##_patchlist = \
+ (unsigned long)__ia64_native_start_gate_##name##_patchlist, \
+ .end_##name##_patchlist = \
+ (unsigned long)__ia64_native_end_gate_##name##_patchlist
+
+struct pv_patchdata pv_patchdata __initdata = {
+ ASSIGN(fsyscall),
+ ASSIGN(brl_fsys_bubble_down),
+ ASSIGN(vtop),
+ ASSIGN(mckinley_e9),
+
+ .gate_section = (void*)__start_gate_section,
+};
+
+
+unsigned long __init
+paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
+{
+
+#define CASE(NAME, name) \
+ case PV_GATE_START_##NAME: \
+ return pv_patchdata.start_##name##_patchlist; \
+ case PV_GATE_END_##NAME: \
+ return pv_patchdata.end_##name##_patchlist; \
+
+ switch (type) {
+ CASE(FSYSCALL, fsyscall);
+ CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
+ CASE(VTOP, vtop);
+ CASE(MCKINLEY_E9, mckinley_e9);
+ default:
+ BUG();
+ break;
+ }
+ return 0;
+}
+
+void * __init
+paravirt_get_gate_section(void)
+{
+ return pv_patchdata.gate_section;
+}
diff --git a/arch/ia64/kernel/paravirt_patchlist.h b/arch/ia64/kernel/paravirt_patchlist.h
new file mode 100644
index 000000000000..0684aa6c6507
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patchlist.h
@@ -0,0 +1,28 @@
+/******************************************************************************
+ * linux/arch/ia64/xen/paravirt_patchlist.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#if defined(__IA64_GATE_PARAVIRTUALIZED_XEN)
+#include <asm/xen/patchlist.h>
+#else
+#include <asm/native/patchlist.h>
+#endif
+
diff --git a/arch/ia64/kernel/paravirtentry.S b/arch/ia64/kernel/paravirtentry.S
index 2f42fcb9776a..6158560d7f17 100644
--- a/arch/ia64/kernel/paravirtentry.S
+++ b/arch/ia64/kernel/paravirtentry.S
@@ -20,8 +20,11 @@
*
*/
+#include <linux/init.h>
#include <asm/asmmacro.h>
#include <asm/asm-offsets.h>
+#include <asm/paravirt_privop.h>
+#include <asm/paravirt_patch.h>
#include "entry.h"
#define DATA8(sym, init_value) \
@@ -32,29 +35,87 @@
data8 init_value ; \
.popsection
-#define BRANCH(targ, reg, breg) \
- movl reg=targ ; \
- ;; \
- ld8 reg=[reg] ; \
- ;; \
- mov breg=reg ; \
+#define BRANCH(targ, reg, breg, type) \
+ PARAVIRT_PATCH_SITE_BR(PARAVIRT_PATCH_TYPE_BR_ ## type) ; \
+ ;; \
+ movl reg=targ ; \
+ ;; \
+ ld8 reg=[reg] ; \
+ ;; \
+ mov breg=reg ; \
br.cond.sptk.many breg
-#define BRANCH_PROC(sym, reg, breg) \
- DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
- GLOBAL_ENTRY(paravirt_ ## sym) ; \
- BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
+#define BRANCH_PROC(sym, reg, breg, type) \
+ DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
+ GLOBAL_ENTRY(paravirt_ ## sym) ; \
+ BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
-#define BRANCH_PROC_UNWINFO(sym, reg, breg) \
- DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
- GLOBAL_ENTRY(paravirt_ ## sym) ; \
- PT_REGS_UNWIND_INFO(0) ; \
- BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
+#define BRANCH_PROC_UNWINFO(sym, reg, breg, type) \
+ DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
+ GLOBAL_ENTRY(paravirt_ ## sym) ; \
+ PT_REGS_UNWIND_INFO(0) ; \
+ BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
-BRANCH_PROC(switch_to, r22, b7)
-BRANCH_PROC_UNWINFO(leave_syscall, r22, b7)
-BRANCH_PROC(work_processed_syscall, r2, b7)
-BRANCH_PROC_UNWINFO(leave_kernel, r22, b7)
+BRANCH_PROC(switch_to, r22, b7, SWITCH_TO)
+BRANCH_PROC_UNWINFO(leave_syscall, r22, b7, LEAVE_SYSCALL)
+BRANCH_PROC(work_processed_syscall, r2, b7, WORK_PROCESSED_SYSCALL)
+BRANCH_PROC_UNWINFO(leave_kernel, r22, b7, LEAVE_KERNEL)
+
+
+#ifdef CONFIG_MODULES
+#define __INIT_OR_MODULE .text
+#define __INITDATA_OR_MODULE .data
+#else
+#define __INIT_OR_MODULE __INIT
+#define __INITDATA_OR_MODULE __INITDATA
+#endif /* CONFIG_MODULES */
+
+ __INIT_OR_MODULE
+ GLOBAL_ENTRY(paravirt_fc_i)
+ fc.i r32
+ br.ret.sptk.many rp
+ END(paravirt_fc_i)
+ __FINIT
+
+ __INIT_OR_MODULE
+ .align 32
+ GLOBAL_ENTRY(paravirt_nop_b_inst_bundle)
+ {
+ nop.b 0
+ nop.b 0
+ nop.b 0
+ }
+ END(paravirt_nop_b_inst_bundle)
+ __FINIT
+
+ /* NOTE: nop.[mfi] has same format */
+ __INIT_OR_MODULE
+ GLOBAL_ENTRY(paravirt_nop_mfi_inst_bundle)
+ {
+ nop.m 0
+ nop.f 0
+ nop.i 0
+ }
+ END(paravirt_nop_mfi_inst_bundle)
+ __FINIT
+
+ __INIT_OR_MODULE
+ GLOBAL_ENTRY(paravirt_nop_bundle)
+paravirt_nop_bundle_start:
+ {
+ nop 0
+ nop 0
+ nop 0
+ }
+paravirt_nop_bundle_end:
+ END(paravirt_nop_bundle)
+ __FINIT
+
+ __INITDATA_OR_MODULE
+ .align 8
+ .global paravirt_nop_bundle_size
+paravirt_nop_bundle_size:
+ data8 paravirt_nop_bundle_end - paravirt_nop_bundle_start
diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
index b83b2c516008..68a1311db806 100644
--- a/arch/ia64/kernel/patch.c
+++ b/arch/ia64/kernel/patch.c
@@ -7,6 +7,7 @@
#include <linux/init.h>
#include <linux/string.h>
+#include <asm/paravirt.h>
#include <asm/patch.h>
#include <asm/processor.h>
#include <asm/sections.h>
@@ -169,16 +170,35 @@ ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
ia64_srlz_i();
}
+extern unsigned long ia64_native_fsyscall_table[NR_syscalls];
+extern char ia64_native_fsys_bubble_down[];
+struct pv_fsys_data pv_fsys_data __initdata = {
+ .fsyscall_table = (unsigned long *)ia64_native_fsyscall_table,
+ .fsys_bubble_down = (void *)ia64_native_fsys_bubble_down,
+};
+
+unsigned long * __init
+paravirt_get_fsyscall_table(void)
+{
+ return pv_fsys_data.fsyscall_table;
+}
+
+char * __init
+paravirt_get_fsys_bubble_down(void)
+{
+ return pv_fsys_data.fsys_bubble_down;
+}
+
static void __init
patch_fsyscall_table (unsigned long start, unsigned long end)
{
- extern unsigned long fsyscall_table[NR_syscalls];
+ u64 fsyscall_table = (u64)paravirt_get_fsyscall_table();
s32 *offp = (s32 *) start;
u64 ip;
while (offp < (s32 *) end) {
ip = (u64) ia64_imva((char *) offp + *offp);
- ia64_patch_imm64(ip, (u64) fsyscall_table);
+ ia64_patch_imm64(ip, fsyscall_table);
ia64_fc((void *) ip);
++offp;
}
@@ -189,7 +209,7 @@ patch_fsyscall_table (unsigned long start, unsigned long end)
static void __init
patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
{
- extern char fsys_bubble_down[];
+ u64 fsys_bubble_down = (u64)paravirt_get_fsys_bubble_down();
s32 *offp = (s32 *) start;
u64 ip;
@@ -207,13 +227,13 @@ patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
void __init
ia64_patch_gate (void)
{
-# define START(name) ((unsigned long) __start_gate_##name##_patchlist)
-# define END(name) ((unsigned long)__end_gate_##name##_patchlist)
+# define START(name) paravirt_get_gate_patchlist(PV_GATE_START_##name)
+# define END(name) paravirt_get_gate_patchlist(PV_GATE_END_##name)
- patch_fsyscall_table(START(fsyscall), END(fsyscall));
- patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down), END(brl_fsys_bubble_down));
- ia64_patch_vtop(START(vtop), END(vtop));
- ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9));
+ patch_fsyscall_table(START(FSYSCALL), END(FSYSCALL));
+ patch_brl_fsys_bubble_down(START(BRL_FSYS_BUBBLE_DOWN), END(BRL_FSYS_BUBBLE_DOWN));
+ ia64_patch_vtop(START(VTOP), END(VTOP));
+ ia64_patch_mckinley_e9(START(MCKINLEY_E9), END(MCKINLEY_E9));
}
void ia64_patch_phys_stack_reg(unsigned long val)
@@ -229,7 +249,7 @@ void ia64_patch_phys_stack_reg(unsigned long val)
while (offp < end) {
ip = (u64) offp + *offp;
ia64_patch(ip, mask, imm);
- ia64_fc(ip);
+ ia64_fc((void *)ip);
++offp;
}
ia64_sync_i();
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index ae9ec3dc76b8..833b3ef92779 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -52,6 +52,7 @@
#include <asm/meminit.h>
#include <asm/page.h>
#include <asm/paravirt.h>
+#include <asm/paravirt_patch.h>
#include <asm/patch.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -537,6 +538,7 @@ setup_arch (char **cmdline_p)
paravirt_arch_setup_early();
ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
+ paravirt_patch_apply();
*cmdline_p = __va(ia64_boot_param->command_line);
strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index f0ebb342409d..c323c7b9c775 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -50,6 +50,15 @@ EXPORT_SYMBOL(last_cli_ip);
#endif
#ifdef CONFIG_PARAVIRT
+/* We need to define a real function for sched_clock, to override the
+ weak default version */
+unsigned long long sched_clock(void)
+{
+ return paravirt_sched_clock();
+}
+#endif
+
+#ifdef CONFIG_PARAVIRT
static void
paravirt_clocksource_resume(void)
{
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index 3765efc5f963..4a95e86b9ac2 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -169,6 +169,30 @@ SECTIONS
__end___mckinley_e9_bundles = .;
}
+#if defined(CONFIG_PARAVIRT)
+ . = ALIGN(16);
+ .paravirt_bundles : AT(ADDR(.paravirt_bundles) - LOAD_OFFSET)
+ {
+ __start_paravirt_bundles = .;
+ *(.paravirt_bundles)
+ __stop_paravirt_bundles = .;
+ }
+ . = ALIGN(16);
+ .paravirt_insts : AT(ADDR(.paravirt_insts) - LOAD_OFFSET)
+ {
+ __start_paravirt_insts = .;
+ *(.paravirt_insts)
+ __stop_paravirt_insts = .;
+ }
+ . = ALIGN(16);
+ .paravirt_branches : AT(ADDR(.paravirt_branches) - LOAD_OFFSET)
+ {
+ __start_paravirt_branches = .;
+ *(.paravirt_branches)
+ __stop_paravirt_branches = .;
+ }
+#endif
+
#if defined(CONFIG_IA64_GENERIC)
/* Machine Vector */
. = ALIGN(16);
@@ -201,6 +225,12 @@ SECTIONS
__start_gate_section = .;
*(.data.gate)
__stop_gate_section = .;
+#ifdef CONFIG_XEN
+ . = ALIGN(PAGE_SIZE);
+ __xen_start_gate_section = .;
+ *(.data.gate.xen)
+ __xen_stop_gate_section = .;
+#endif
}
. = ALIGN(PAGE_SIZE); /* make sure the gate page doesn't expose
* kernel data
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 02:22:24 +0100