LoongArch: KVM: Add hypercall crash support

Now generic pvpanic is supported in Linux kernel which will notify VMM
with VM crash event. There is some limitations with pvpanic, such as it
requires a good kernel stack or the CPU hardware context and panic() C
function is in health state.

Sometimes CPU hardware context or kernel/irq stack is corrupted. So
hypercall code is a more direct and low-level crash method, which is
useful in exception entry with assmble language. Here add a hypercall
code to support VM crash function, so that VMM can capture CPU crash
context in time.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

0 files changed, 0 insertions, 0 deletions