Re: [PATCH v3 18/41] KVM: PPC: Book3S HV P9: Move xive vcpu context management into kvmhv_p9_guest_entry
flat view
From: Alexey Kardashevskiy <hidden>
Date: 2021-03-22 05:31:12
On 06/03/2021 02:06, Nicholas Piggin wrote:
Move the xive management up so the low level register switching can be pushed further down in a later patch. XIVE MMIO CI operations can run in higher level code with machine checks, tracing, etc., available. Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Alexey Kardashevskiy <redacted>
quoted hunk ↗ jump to hunk
--- arch/powerpc/kvm/book3s_hv.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index b265522fc467..497f216ad724 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c@@ -3558,15 +3558,11 @@ static int kvmhv_load_hv_regs_and_go(struct kvm_vcpu *vcpu, u64 time_limit, switch_mmu_to_guest_radix(kvm, vcpu, lpcr); - kvmppc_xive_push_vcpu(vcpu); - mtspr(SPRN_SRR0, vcpu->arch.shregs.srr0); mtspr(SPRN_SRR1, vcpu->arch.shregs.srr1); trap = __kvmhv_vcpu_entry_p9(vcpu); - kvmppc_xive_pull_vcpu(vcpu); - /* Advance host PURR/SPURR by the amount used by guest */ purr = mfspr(SPRN_PURR); spurr = mfspr(SPRN_SPURR);@@ -3749,7 +3745,10 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, trap = 0; } } else { + kvmppc_xive_push_vcpu(vcpu); trap = kvmhv_load_hv_regs_and_go(vcpu, time_limit, lpcr); + kvmppc_xive_pull_vcpu(vcpu); + } vcpu->arch.slb_max = 0;
-- Alexey