renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 13:43:55 +08:00
Code

PPC KVM fix -

Browse Source 
Fix a bug causing occasional machine check exceptions on POWER8 hosts,
 introduced in 4.16-rc1.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJatGo6AAoJEJ2a6ncsY3GfZb0H/AiOmWCEhLqLmvudlFaCxm2c
 UBwXb4+snwQxHUTECpSibjDH65zetyqoX9FdyVS+xlEER1qRWxdgt5WY8gyxLjHP
 oPVIM3lROeRrRpql3ioXWKHWzcNZq5OQb67m9lHiO5irO/l2Ct1QazQnFtVrJOM0
 0AqwmpIdYK8D9W8rEOTt6P9uOicdojriiGe+ihbJElqYeksJkQYMgMaQNC4Zq3ri
 qURH32cWAJe3AtP8cVJvWcubC2Cd01lHRbPOxHVAJvqE3MXQBtr4SFkuPJ0eRF2l
 Lcn/S5qw/AMQ6hU3bHxTFUywHUwyGX6qvAJMOyP8Szvv99SUhFezku2l4wCJ/6w=
 =9BpD
 -----END PGP SIGNATURE-----

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.
This commit is contained in:
Paolo Bonzini 2018-03-23 18:21:49 +01:00
commit e13c2ac512
1 changed files with 18 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -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)