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| Started by | Alex Bennée <alex.bennee@linaro.org> |
|---|---|
| First post | 2015-06-19 14:30 +0200 |
| Last post | 2015-06-19 14:30 +0200 |
| Articles | 1 — 1 participant |
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[PATCH v6 02/12] KVM: arm64: fix misleading comments in save/restore Alex Bennée <alex.bennee@linaro.org> - 2015-06-19 14:30 +0200
| From | Alex Bennée <alex.bennee@linaro.org> |
|---|---|
| Date | 2015-06-19 14:30 +0200 |
| Subject | [PATCH v6 02/12] KVM: arm64: fix misleading comments in save/restore |
| Message-ID | <pD3AJ-7hF-1@gated-at.bofh.it> |
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 Bennée <alex.bennee@linaro.org> --- 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] -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
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