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KVM: PPC: Book3S HV: Fix host radix SLB optimisation with hash guests

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Commit 68ad28a4cd ("KVM: PPC: Book3S HV: Fix radix guest SLB side
channel") incorrectly removed the radix host instruction patch to skip
re-loading the host SLB entries when exiting from a hash
guest. Restore it.

Fixes: 68ad28a4cd ("KVM: PPC: Book3S HV: Fix radix guest SLB side channel")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Nicholas Piggin 2021-02-11 15:38:30 +10:00 committed by Paul Mackerras
parent ab950e1acd
commit 72476aaa46
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/kvm/book3s_hv_rmhandlers.S
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@ -1525,6 +1525,9 @@ guest_exit_cont: /* r9 = vcpu, r12 = trap, r13 = paca */
stw r5,VCPU_SLB_MAX(r9)
/* load host SLB entries */
BEGIN_MMU_FTR_SECTION
b guest_bypass
END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX)
ld r8,PACA_SLBSHADOWPTR(r13)
.rept SLB_NUM_BOLTED