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Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD

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Paolo Bonzini 2016-03-08 12:46:50 +01:00
commit 8bb9b9ccff
1 changed files with 14 additions and 0 deletions
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14
arch/powerpc/kvm/book3s_hv_rmhandlers.S
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@ -1370,6 +1370,20 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
std r6, VCPU_ACOP(r9)
stw r7, VCPU_GUEST_PID(r9)
std r8, VCPU_WORT(r9)
/*
* Restore various registers to 0, where non-zero values
* set by the guest could disrupt the host.
*/
li r0, 0
mtspr SPRN_IAMR, r0
mtspr SPRN_CIABR, r0
mtspr SPRN_DAWRX, r0
mtspr SPRN_TCSCR, r0
mtspr SPRN_WORT, r0
/* Set MMCRS to 1<<31 to freeze and disable the SPMC counters */
li r0, 1
sldi r0, r0, 31
mtspr SPRN_MMCRS, r0
8:
/* Save and reset AMR and UAMOR before turning on the MMU */