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[2/3] LoongArch: KVM: Add LBT feature detection with cpucfg

Message ID 20240513011235.3233776-3-maobibo@loongson.cn (mailing list archive)
State New
Headers show
Series LoongArch: KVM: Add Binary Translation extension support | expand

Commit Message

maobibo May 13, 2024, 1:12 a.m. UTC 
Loongson Binary Translation (LBT) feature is defined in register
cpucfg2. Here LBT capability detection for VM is added.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
 arch/loongarch/kvm/vcpu.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index d93ec21269da..b2856539368a 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -532,6 +532,12 @@  static int _kvm_get_cpucfg_mask(int id, u64 *v)
 			*v |= CPUCFG2_LSX;
 		if (cpu_has_lasx)
 			*v |= CPUCFG2_LASX;
+		if (cpu_has_lbt_x86)
+			*v |= CPUCFG2_X86BT;
+		if (cpu_has_lbt_arm)
+			*v |= CPUCFG2_ARMBT;
+		if (cpu_has_lbt_mips)
+			*v |= CPUCFG2_MIPSBT;
 
 		return 0;
 	case LOONGARCH_CPUCFG3: