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 <ag...@suse.de>
---
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 b165b20..b091f94 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -61,6 +61,8 @@
#define KVM_INST_MTSPR_DAR 0x7c1303a6
#define KVM_INST_MTSPR_DSISR 0x7c1203a6
+#define KVM_INST_TLBSYNC 0x7c00046c
+
static bool kvm_patching_worked = true;
static void kvm_patch_ins_ld(u32 *inst, long addr, u32 rt)
@@ -91,6 +93,11 @@ static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt)
*inst = KVM_INST_STW | rt | (addr & 0x0000fffc);
}
+static void kvm_patch_ins_nop(u32 *inst)
+{
+ *inst = KVM_INST_NOP;
+}
+
static void kvm_map_magic_page(void *data)
{
kvm_hypercall2(KVM_HC_PPC_MAP_MAGIC_PAGE,
@@ -159,6 +166,11 @@ 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) {
--
1.6.0.2
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
