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| author | Nicholas Piggin <npiggin@gmail.com> | 2019-06-23 20:41:52 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-07-03 15:19:35 +1000 |
| commit | 6c46fcce39f0eb4830078c5f1db289dd7196f84a (patch) | |
| tree | f22e81131e6077f2687ab6c776be8eb5c057783e /arch/powerpc/kvm/book3s_hv_builtin.c | |
| parent | fe7946ce0808eb0e43711f5db7d2d1599b362d02 (diff) | |
| download | linux-6c46fcce39f0eb4830078c5f1db289dd7196f84a.tar.bz2 | |
powerpc/64s/radix: keep kernel ERAT over local process/guest invalidates
ISA v3.0 radix modes provide SLBIA variants which can invalidate ERAT
for effPID!=0 or for effLPID!=0, which allows user and guest
invalidations to retain kernel/host ERAT entries.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_builtin.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_builtin.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index ca4f006abd77..8fa93114d630 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -823,6 +823,8 @@ static void flush_guest_tlb(struct kvm *kvm) : : "r" (rb), "i" (1), "i" (1), "i" (0), "r" (0) : "memory"); } + asm volatile("ptesync": : :"memory"); + asm volatile(PPC_RADIX_INVALIDATE_ERAT_GUEST : : :"memory"); } else { for (set = 0; set < kvm->arch.tlb_sets; ++set) { /* R=0 PRS=0 RIC=0 */ @@ -831,9 +833,9 @@ static void flush_guest_tlb(struct kvm *kvm) "r" (0) : "memory"); rb += PPC_BIT(51); /* increment set number */ } + asm volatile("ptesync": : :"memory"); + asm volatile(PPC_ISA_3_0_INVALIDATE_ERAT : : :"memory"); } - asm volatile("ptesync": : :"memory"); - asm volatile(PPC_ISA_3_0_INVALIDATE_ERAT : : :"memory"); } void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu, |