[PATCH v6 02/12] KVM: arm64: fix misleading comments in save/restore
From: Alex Bennée <hidden>
Date: 2015-06-19 12:24:17
Also in:
kvm, kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
The elr_el2 and spsr_el2 registers in fact contain the processor state before entry into the hypervisor code. In the case of guest state it could be in either el0 or el1. Signed-off-by: Alex Benn?e <redacted> --- arch/arm64/kvm/hyp.S | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
index 5befd01..cb9bdd8 100644
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S@@ -50,8 +50,8 @@ stp x29, lr, [x3, #80] mrs x19, sp_el0 - mrs x20, elr_el2 // EL1 PC - mrs x21, spsr_el2 // EL1 pstate + mrs x20, elr_el2 // PC before hyp entry + mrs x21, spsr_el2 // pstate before hyp entry stp x19, x20, [x3, #96] str x21, [x3, #112]
@@ -82,8 +82,8 @@ ldr x21, [x3, #16] msr sp_el0, x19 - msr elr_el2, x20 // EL1 PC - msr spsr_el2, x21 // EL1 pstate + msr elr_el2, x20 // PC to restore + msr spsr_el2, x21 // pstate to restore add x3, x2, #CPU_XREG_OFFSET(19) ldp x19, x20, [x3]
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2.4.3