[PATCH 0/3] LoongArch: KVM: Add Binary Translation extension support
From: Bibo Mao
Date: Sun May 12 2024 - 21:13:10 EST
Loongson Binary Translation (LBT) is used to accelerate binary
translation, which contains 4 scratch registers (scr0 to scr3), x86/ARM
eflags (eflags) and x87 fpu stack pointer (ftop).
Like FPU extension, here late enabling method is used for LBT. LBT context
is saved/restored on vcpu context switch path.
Also this patch set BT capability detection, and BT register get/set
interface for userspace vmm, so that vm supports migration with BT
extension.
Bibo Mao (3):
LoongArch: KVM: Add HW Binary Translation extension support
LoongArch: KVM: Add LBT feature detection with cpucfg
LoongArch: KVM: Add vm migration support for LBT feature
arch/loongarch/include/asm/kvm_host.h | 8 ++
arch/loongarch/include/asm/kvm_vcpu.h | 10 ++
arch/loongarch/include/uapi/asm/kvm.h | 7 ++
arch/loongarch/kvm/exit.c | 9 ++
arch/loongarch/kvm/vcpu.c | 168 +++++++++++++++++++++++++-
5 files changed, 201 insertions(+), 1 deletion(-)
base-commit: f4345f05c0dfc73c617e66f3b809edb8ddd41075
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2.39.3