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| author | Bibo Mao <maobibo@loongson.cn> | 2025-11-27 11:00:18 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-11-27 11:00:18 +0800 |
| commit | 985a96983bedf04fa61315e68806f3468450c8a1 (patch) | |
| tree | e23c2b201513f759f71a2e80e5eb64bb44b544da /tools/testing/selftests/kvm/lib/loongarch/processor.c | |
| parent | d3e43a1f34acbb9a814337fc5624765538e5a274 (diff) | |
KVM: LoongArch: selftests: Add system registers save/restore on exception
When system returns from exception with ertn instruction, PC comes from
LOONGARCH_CSR_ERA, and CSR.CRMD comes LOONGARCH_CSR_PRMD.
Here save CSR register CSR.ERA and CSR.PRMD into stack, and then restore
them from stack. So it can be modified by exception handlers in future.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/loongarch/processor.c')
0 files changed, 0 insertions, 0 deletions