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-rw-r--r--arch/x86/xen/Makefile4
-rw-r--r--arch/x86/xen/enlighten.c8
-rw-r--r--arch/x86/xen/mmu.c16
-rw-r--r--arch/x86/xen/setup.c32
-rw-r--r--arch/x86/xen/smp.c14
-rw-r--r--arch/x86/xen/time.c5
-rw-r--r--arch/x86/xen/trace.c1
-rw-r--r--arch/x86/xen/xen-asm_32.S8
8 files changed, 66 insertions, 22 deletions
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index ccf73b2f3e69..add2c2d729ce 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -13,7 +13,9 @@ CFLAGS_mmu.o := $(nostackp)
obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
time.o xen-asm.o xen-asm_$(BITS).o \
grant-table.o suspend.o platform-pci-unplug.o \
- p2m.o trace.o
+ p2m.o
+
+obj-$(CONFIG_EVENT_TRACING) += trace.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 974a528458a0..2d69617950f7 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -77,8 +77,8 @@ EXPORT_SYMBOL_GPL(xen_domain_type);
unsigned long *machine_to_phys_mapping = (void *)MACH2PHYS_VIRT_START;
EXPORT_SYMBOL(machine_to_phys_mapping);
-unsigned int machine_to_phys_order;
-EXPORT_SYMBOL(machine_to_phys_order);
+unsigned long machine_to_phys_nr;
+EXPORT_SYMBOL(machine_to_phys_nr);
struct start_info *xen_start_info;
EXPORT_SYMBOL_GPL(xen_start_info);
@@ -951,6 +951,10 @@ static const struct pv_info xen_info __initconst = {
.paravirt_enabled = 1,
.shared_kernel_pmd = 0,
+#ifdef CONFIG_X86_64
+ .extra_user_64bit_cs = FLAT_USER_CS64,
+#endif
+
.name = "Xen",
};
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index f987bde77c49..20a614275064 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1713,15 +1713,19 @@ static void __init xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn)
void __init xen_setup_machphys_mapping(void)
{
struct xen_machphys_mapping mapping;
- unsigned long machine_to_phys_nr_ents;
if (HYPERVISOR_memory_op(XENMEM_machphys_mapping, &mapping) == 0) {
machine_to_phys_mapping = (unsigned long *)mapping.v_start;
- machine_to_phys_nr_ents = mapping.max_mfn + 1;
+ machine_to_phys_nr = mapping.max_mfn + 1;
} else {
- machine_to_phys_nr_ents = MACH2PHYS_NR_ENTRIES;
+ machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
}
- machine_to_phys_order = fls(machine_to_phys_nr_ents - 1);
+#ifdef CONFIG_X86_32
+ if ((machine_to_phys_mapping + machine_to_phys_nr)
+ < machine_to_phys_mapping)
+ machine_to_phys_nr = (unsigned long *)NULL
+ - machine_to_phys_mapping;
+#endif
}
#ifdef CONFIG_X86_64
@@ -1916,6 +1920,7 @@ static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot)
# endif
#else
case VSYSCALL_LAST_PAGE ... VSYSCALL_FIRST_PAGE:
+ case VVAR_PAGE:
#endif
case FIX_TEXT_POKE0:
case FIX_TEXT_POKE1:
@@ -1956,7 +1961,8 @@ static void xen_set_fixmap(unsigned idx, phys_addr_t phys, pgprot_t prot)
#ifdef CONFIG_X86_64
/* Replicate changes to map the vsyscall page into the user
pagetable vsyscall mapping. */
- if (idx >= VSYSCALL_LAST_PAGE && idx <= VSYSCALL_FIRST_PAGE) {
+ if ((idx >= VSYSCALL_LAST_PAGE && idx <= VSYSCALL_FIRST_PAGE) ||
+ idx == VVAR_PAGE) {
unsigned long vaddr = __fix_to_virt(idx);
set_pte_vaddr_pud(level3_user_vsyscall, vaddr, pte);
}
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 60aeeb56948f..c3b8d440873c 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -9,6 +9,7 @@
#include <linux/mm.h>
#include <linux/pm.h>
#include <linux/memblock.h>
+#include <linux/cpuidle.h>
#include <asm/elf.h>
#include <asm/vdso.h>
@@ -92,8 +93,6 @@ static unsigned long __init xen_release_chunk(phys_addr_t start_addr,
if (end <= start)
return 0;
- printk(KERN_INFO "xen_release_chunk: looking at area pfn %lx-%lx: ",
- start, end);
for(pfn = start; pfn < end; pfn++) {
unsigned long mfn = pfn_to_mfn(pfn);
@@ -106,14 +105,14 @@ static unsigned long __init xen_release_chunk(phys_addr_t start_addr,
ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation,
&reservation);
- WARN(ret != 1, "Failed to release memory %lx-%lx err=%d\n",
- start, end, ret);
+ WARN(ret != 1, "Failed to release pfn %lx err=%d\n", pfn, ret);
if (ret == 1) {
__set_phys_to_machine(pfn, INVALID_P2M_ENTRY);
len++;
}
}
- printk(KERN_CONT "%ld pages freed\n", len);
+ printk(KERN_INFO "Freeing %lx-%lx pfn range: %lu pages freed\n",
+ start, end, len);
return len;
}
@@ -139,7 +138,7 @@ static unsigned long __init xen_return_unused_memory(unsigned long max_pfn,
if (last_end < max_addr)
released += xen_release_chunk(last_end, max_addr);
- printk(KERN_INFO "released %ld pages of unused memory\n", released);
+ printk(KERN_INFO "released %lu pages of unused memory\n", released);
return released;
}
@@ -185,6 +184,19 @@ static unsigned long __init xen_set_identity(const struct e820entry *list,
PFN_UP(start_pci), PFN_DOWN(last));
return identity;
}
+
+static unsigned long __init xen_get_max_pages(void)
+{
+ unsigned long max_pages = MAX_DOMAIN_PAGES;
+ domid_t domid = DOMID_SELF;
+ int ret;
+
+ ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
+ if (ret > 0)
+ max_pages = ret;
+ return min(max_pages, MAX_DOMAIN_PAGES);
+}
+
/**
* machine_specific_memory_setup - Hook for machine specific memory setup.
**/
@@ -293,6 +305,12 @@ char * __init xen_memory_setup(void)
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+ extra_limit = xen_get_max_pages();
+ if (extra_limit >= max_pfn)
+ extra_pages = extra_limit - max_pfn;
+ else
+ extra_pages = 0;
+
extra_pages += xen_return_unused_memory(xen_start_info->nr_pages, &e820);
/*
@@ -426,7 +444,7 @@ void __init xen_arch_setup(void)
#ifdef CONFIG_X86_32
boot_cpu_data.hlt_works_ok = 1;
#endif
- pm_idle = default_idle;
+ disable_cpuidle();
boot_option_idle_override = IDLE_HALT;
fiddle_vdso();
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index b4533a86d7e4..d4fc6d454f8d 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -32,6 +32,7 @@
#include <xen/page.h>
#include <xen/events.h>
+#include <xen/hvc-console.h>
#include "xen-ops.h"
#include "mmu.h"
@@ -207,6 +208,15 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
unsigned cpu;
unsigned int i;
+ if (skip_ioapic_setup) {
+ char *m = (max_cpus == 0) ?
+ "The nosmp parameter is incompatible with Xen; " \
+ "use Xen dom0_max_vcpus=1 parameter" :
+ "The noapic parameter is incompatible with Xen";
+
+ xen_raw_printk(m);
+ panic(m);
+ }
xen_init_lock_cpu(0);
smp_store_cpu_info(0);
@@ -521,8 +531,6 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
native_smp_prepare_cpus(max_cpus);
WARN_ON(xen_smp_intr_init(0));
- if (!xen_have_vector_callback)
- return;
xen_init_lock_cpu(0);
xen_init_spinlocks();
}
@@ -546,6 +554,8 @@ static void xen_hvm_cpu_die(unsigned int cpu)
void __init xen_hvm_smp_init(void)
{
+ if (!xen_have_vector_callback)
+ return;
smp_ops.smp_prepare_cpus = xen_hvm_smp_prepare_cpus;
smp_ops.smp_send_reschedule = xen_smp_send_reschedule;
smp_ops.cpu_up = xen_hvm_cpu_up;
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 5158c505bef9..163b4679556e 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -168,9 +168,10 @@ cycle_t xen_clocksource_read(void)
struct pvclock_vcpu_time_info *src;
cycle_t ret;
- src = &get_cpu_var(xen_vcpu)->time;
+ preempt_disable_notrace();
+ src = &__get_cpu_var(xen_vcpu)->time;
ret = pvclock_clocksource_read(src);
- put_cpu_var(xen_vcpu);
+ preempt_enable_notrace();
return ret;
}
diff --git a/arch/x86/xen/trace.c b/arch/x86/xen/trace.c
index 734beba2a08c..520022d1a181 100644
--- a/arch/x86/xen/trace.c
+++ b/arch/x86/xen/trace.c
@@ -1,4 +1,5 @@
#include <linux/ftrace.h>
+#include <xen/interface/xen.h>
#define N(x) [__HYPERVISOR_##x] = "("#x")"
static const char *xen_hypercall_names[] = {
diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S
index 22a2093b5862..b040b0e518ca 100644
--- a/arch/x86/xen/xen-asm_32.S
+++ b/arch/x86/xen/xen-asm_32.S
@@ -113,11 +113,13 @@ xen_iret_start_crit:
/*
* If there's something pending, mask events again so we can
- * jump back into xen_hypervisor_callback
+ * jump back into xen_hypervisor_callback. Otherwise do not
+ * touch XEN_vcpu_info_mask.
*/
- sete XEN_vcpu_info_mask(%eax)
+ jne 1f
+ movb $1, XEN_vcpu_info_mask(%eax)
- popl %eax
+1: popl %eax
/*
* From this point on the registers are restored and the stack
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 11:43:12 +0100