diff options
| author | James Hogan <james.hogan@imgtec.com> | 2016-05-06 15:36:19 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-05-13 14:02:18 +0200 |
| commit | 9b5c3399584b6f6aa755dbe11e3cef5776fd279d (patch) | |
| tree | 52234bb21d945aaa67b85d56ce247ec0736adca5 /arch | |
| parent | MIPS: KVM/locore.S: Don't preserve host ASID around vcpu_run (diff) | |
| download | linux-9b5c3399584b6f6aa755dbe11e3cef5776fd279d.tar.xz linux-9b5c3399584b6f6aa755dbe11e3cef5776fd279d.zip | |
MIPS: Add & use CP0_EntryHi ASID definitions
Add definitions for the ASID field in CP0_EntryHi (along with the soon
to be used ASIDX field), and use them in a few previously hardcoded
cases.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13205/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/include/asm/mipsregs.h | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/genex.S | 2 | ||||
| -rw-r--r-- | arch/mips/kvm/locore.S | 4 | ||||
| -rw-r--r-- | arch/mips/pci/pci-alchemy.c | 2 |
4 files changed, 6 insertions, 4 deletions
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 1e9d337fb077..b7705ef09df2 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -229,6 +229,8 @@ /* MIPS32/64 EntryHI bit definitions */ #define MIPS_ENTRYHI_EHINV (_ULCAST_(1) << 10) +#define MIPS_ENTRYHI_ASIDX (_ULCAST_(0x3) << 8) +#define MIPS_ENTRYHI_ASID (_ULCAST_(0xff) << 0) /* * R4x00 interrupt enable / cause bits diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index baa7b6fc0a60..17374aef6f00 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -455,7 +455,7 @@ NESTED(nmi_handler, PT_SIZE, sp) .set noreorder /* check if TLB contains a entry for EPC */ MFC0 k1, CP0_ENTRYHI - andi k1, 0xff /* ASID_MASK */ + andi k1, MIPS_ENTRYHI_ASID MFC0 k0, CP0_EPC PTR_SRL k0, _PAGE_SHIFT + 1 PTR_SLL k0, _PAGE_SHIFT + 1 diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S index c24facc85357..308706493fd5 100644 --- a/arch/mips/kvm/locore.S +++ b/arch/mips/kvm/locore.S @@ -164,7 +164,7 @@ FEXPORT(__kvm_mips_load_asid) INT_SLL t2, t2, 2 /* x4 */ REG_ADDU t3, t1, t2 LONG_L k0, (t3) - andi k0, k0, 0xff + andi k0, k0, MIPS_ENTRYHI_ASID mtc0 k0, CP0_ENTRYHI ehb @@ -483,7 +483,7 @@ __kvm_mips_return_to_guest: INT_SLL t2, t2, 2 /* x4 */ REG_ADDU t3, t1, t2 LONG_L k0, (t3) - andi k0, k0, 0xff + andi k0, k0, MIPS_ENTRYHI_ASID mtc0 k0, CP0_ENTRYHI ehb diff --git a/arch/mips/pci/pci-alchemy.c b/arch/mips/pci/pci-alchemy.c index 28952637a862..c8994c156e2d 100644 --- a/arch/mips/pci/pci-alchemy.c +++ b/arch/mips/pci/pci-alchemy.c @@ -76,7 +76,7 @@ static void mod_wired_entry(int entry, unsigned long entrylo0, unsigned long old_ctx; /* Save old context and create impossible VPN2 value */ - old_ctx = read_c0_entryhi() & 0xff; + old_ctx = read_c0_entryhi() & MIPS_ENTRYHI_ASID; old_pagemask = read_c0_pagemask(); write_c0_index(entry); write_c0_pagemask(pagemask); |