The host EntryHi in the KVM VCPU context is virtually unused. It gets
stored on exceptions, but only ever used in a kvm_debug() when a TLB
miss occurs.
Drop it entirely, removing that information from the kvm_debug output.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: kvm@xxxxxxxxxxxxxxx
---
arch/mips/include/asm/kvm_host.h | 1 -
arch/mips/kernel/asm-offsets.c | 1 -
arch/mips/kvm/emulate.c | 5 ++---
arch/mips/kvm/locore.S | 3 ---
4 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index b310bb348443..cbcedd7a684b 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -346,7 +346,6 @@ struct kvm_vcpu_arch {
unsigned long host_cp0_badvaddr;
unsigned long host_cp0_cause;
unsigned long host_cp0_epc;
- unsigned long host_cp0_entryhi;
/* GPRS */
unsigned long gprs[32];
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index 4d96a9033f46..420808899c70 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -364,7 +364,6 @@ void output_kvm_defines(void)
OFFSET(VCPU_HOST_CP0_BADVADDR, kvm_vcpu_arch, host_cp0_badvaddr);
OFFSET(VCPU_HOST_CP0_CAUSE, kvm_vcpu_arch, host_cp0_cause);
OFFSET(VCPU_HOST_EPC, kvm_vcpu_arch, host_cp0_epc);
- OFFSET(VCPU_HOST_ENTRYHI, kvm_vcpu_arch, host_cp0_entryhi);
OFFSET(VCPU_R0, kvm_vcpu_arch, gprs[0]);
OFFSET(VCPU_R1, kvm_vcpu_arch, gprs[1]);
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index 645c8a1982a7..2836668d63fc 100644
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -1634,7 +1634,6 @@ enum emulation_result kvm_mips_emulate_cache(uint32_t inst, uint32_t *opc,
(cop0) & KVM_ENTRYHI_ASID));
if (index < 0) {
- vcpu->arch.host_cp0_entryhi = (va & VPN2_MASK);
vcpu->arch.host_cp0_badvaddr = va;
vcpu->arch.pc = curr_pc;
er = kvm_mips_emulate_tlbmiss_ld(cause, NULL, run,
@@ -2576,8 +2575,8 @@ enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause,
unsigned long va = vcpu->arch.host_cp0_badvaddr;
int index;
- kvm_debug("kvm_mips_handle_tlbmiss: badvaddr: %#lx, entryhi: %#lx\n",
- vcpu->arch.host_cp0_badvaddr, vcpu->arch.host_cp0_entryhi);
+ kvm_debug("kvm_mips_handle_tlbmiss: badvaddr: %#lx\n",
+ vcpu->arch.host_cp0_badvaddr);
/*
* KVM would not have got the exception if this entry was valid in the
diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S
index 828fcfc1cd7f..5ad2d507b125 100644
--- a/arch/mips/kvm/locore.S
+++ b/arch/mips/kvm/locore.S
@@ -308,9 +308,6 @@ NESTED (MIPSX(GuestException), CALLFRAME_SIZ, ra)
mfc0 k0, CP0_CAUSE
LONG_S k0, VCPU_HOST_CP0_CAUSE(k1)
- mfc0 k0, CP0_ENTRYHI
- LONG_S k0, VCPU_HOST_ENTRYHI(k1)
-
/* Now restore the host state just enough to run the handlers */
/* Switch EBASE to the one used by Linux */
--
2.4.10
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