LoongArch: KVM: Reload guest CSR registers after sleep

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commit 78d7bc5a02 upstream.

On host, the HW guest CSR registers are lost after suspend and resume
operation. Since last_vcpu of boot CPU still records latest vCPU pointer
so that the guest CSR register skips to reload when boot CPU resumes and
vCPU is scheduled.

Here last_vcpu is cleared so that guest CSR registers will reload from
scheduled vCPU context after suspend and resume.

Cc: stable@vger.kernel.org
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Bibo Mao 2025-03-08 13:52:01 +08:00 • committed by Greg Kroah-Hartman

parent 5f3f7d2e9a

commit 3700cd7c17

1 changed files with 7 additions and 0 deletions

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arch/loongarch/kvm/main.c

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