diff options
| author | Alexander Graf <agraf@suse.de> | 2010-07-29 14:48:00 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:50:53 +0200 |
| commit | d1290b15e7f139e24150cc6e6d8e904214359e8a (patch) | |
| tree | fb0ba6b3248ebedd566c209f3f761826a320c3cf /arch/powerpc/kernel/kvm.c | |
| parent | d1293c927568f5b5b8dd3fa263a98683cf8556dc (diff) | |
KVM: PPC: PV tlbsync to nop
With our current MMU scheme we don't need to know about the tlbsync instruction.
So we can just nop it out.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kernel/kvm.c')
| -rw-r--r-- | arch/powerpc/kernel/kvm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c index 9ec572c4d2a..3258922cc22 100644 --- a/arch/powerpc/kernel/kvm.c +++ b/arch/powerpc/kernel/kvm.c @@ -62,6 +62,8 @@ #define KVM_INST_MTSPR_DAR 0x7c1303a6 #define KVM_INST_MTSPR_DSISR 0x7c1203a6 +#define KVM_INST_TLBSYNC 0x7c00046c + static bool kvm_patching_worked = true; static inline void kvm_patch_ins(u32 *inst, u32 new_inst) @@ -98,6 +100,11 @@ static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt) kvm_patch_ins(inst, KVM_INST_STW | rt | (addr & 0x0000fffc)); } +static void kvm_patch_ins_nop(u32 *inst) +{ + kvm_patch_ins(inst, KVM_INST_NOP); +} + static void kvm_map_magic_page(void *data) { kvm_hypercall2(KVM_HC_PPC_MAP_MAGIC_PAGE, @@ -166,6 +173,11 @@ static void kvm_check_ins(u32 *inst) case KVM_INST_MTSPR_DSISR: kvm_patch_ins_stw(inst, magic_var(dsisr), inst_rt); break; + + /* Nops */ + case KVM_INST_TLBSYNC: + kvm_patch_ins_nop(inst); + break; } switch (_inst) { |