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| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-03-23 20:21:49 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-03-23 20:21:49 +0300 |
| commit | e13c2ac512373d7b108ca534249b76e0da1e3334 (patch) | |
| tree | 29e5e2b7698958b6ffc7410906b81e39a291b662 /arch | |
| parent | daaf216c06fba4ee4dc3f62715667da929d68774 (diff) | |
| parent | cda4a14733138b8f15b0b69d97ec198dc41eccae (diff) | |
| download | linux-e13c2ac512373d7b108ca534249b76e0da1e3334.tar.xz | |
Merge tag 'kvm-ppc-fixes-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-master
PPC KVM fix -
Fix a bug causing occasional machine check exceptions on POWER8 hosts,
introduced in 4.16-rc1.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index d33264697a31..f86a20270e50 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1557,6 +1557,24 @@ mc_cont: ptesync 3: stw r5,VCPU_SLB_MAX(r9) + /* load host SLB entries */ +BEGIN_MMU_FTR_SECTION + b 0f +END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX) + ld r8,PACA_SLBSHADOWPTR(r13) + + .rept SLB_NUM_BOLTED + li r3, SLBSHADOW_SAVEAREA + LDX_BE r5, r8, r3 + addi r3, r3, 8 + LDX_BE r6, r8, r3 + andis. r7,r5,SLB_ESID_V@h + beq 1f + slbmte r6,r5 +1: addi r8,r8,16 + .endr +0: + guest_bypass: stw r12, STACK_SLOT_TRAP(r1) mr r3, r12 @@ -2018,23 +2036,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) mtspr SPRN_LPCR,r8 isync 48: - /* load host SLB entries */ -BEGIN_MMU_FTR_SECTION - b 0f -END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX) - ld r8,PACA_SLBSHADOWPTR(r13) - - .rept SLB_NUM_BOLTED - li r3, SLBSHADOW_SAVEAREA - LDX_BE r5, r8, r3 - addi r3, r3, 8 - LDX_BE r6, r8, r3 - andis. r7,r5,SLB_ESID_V@h - beq 1f - slbmte r6,r5 -1: addi r8,r8,16 - .endr -0: #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING /* Finish timing, if we have a vcpu */ ld r4, HSTATE_KVM_VCPU(r13) |