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Commit d1290b15 authored by Alexander Graf's avatar Alexander Graf Committed by Avi Kivity
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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: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent d1293c92

arch/powerpc/kernel/kvm.c

+12 −0
Original line number Diff line number Diff line
@@ -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) {