Thread (13 messages) 13 messages, 2 authors, 2022-01-07
STALE1644d
Revisions (3)
  1. v2 current
  2. v3 [diff vs current]
  3. v4 [diff vs current]

[PATCH v2 5/7] KVM: PPC: mmio: Queue interrupt at kvmppc_emulate_mmio

From: Fabiano Rosas <hidden>
Date: 2022-01-06 20:07:32
Subsystem: kernel virtual machine for powerpc (kvm/powerpc), linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

If MMIO emulation fails, we queue a Program interrupt to the
guest. Move that line up into kvmppc_emulate_mmio, which is where we
set RESUME_GUEST/HOST.

No functional change, just separation of responsibilities.

Signed-off-by: Fabiano Rosas <redacted>
---
 arch/powerpc/kvm/emulate_loadstore.c | 4 +---
 arch/powerpc/kvm/powerpc.c           | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c
index 48272a9b9c30..ef50e8cfd988 100644
--- a/arch/powerpc/kvm/emulate_loadstore.c
+++ b/arch/powerpc/kvm/emulate_loadstore.c
@@ -355,10 +355,8 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
 		}
 	}
 
-	if (emulated == EMULATE_FAIL) {
+	if (emulated == EMULATE_FAIL)
 		advance = 0;
-		kvmppc_core_queue_program(vcpu, 0);
-	}
 
 	trace_kvm_ppc_instr(inst, kvmppc_get_pc(vcpu), emulated);
 
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 3fc8057db4b4..a2e78229d645 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -307,7 +307,7 @@ int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu)
 		u32 last_inst;
 
 		kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
-		/* XXX Deliver Program interrupt to guest. */
+		kvmppc_core_queue_program(vcpu, 0);
 		pr_info("%s: emulation failed (%08x)\n", __func__, last_inst);
 		r = RESUME_HOST;
 		break;
-- 
2.33.1
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