From: Bibo Mao <maobibo@loongson.cn>
To: Tianrui Zhao <zhaotianrui@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>,
kvm@vger.kernel.org, loongarch@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] LoongArch: KVM: Add LBT feature detection with cpucfg
Date: Mon, 13 May 2024 09:12:34 +0800 [thread overview]
Message-ID: <20240513011235.3233776-3-maobibo@loongson.cn> (raw)
In-Reply-To: <20240513011235.3233776-1-maobibo@loongson.cn>
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 --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:
--
2.39.3
next prev parent reply other threads:[~2024-05-13 1:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 1:12 [PATCH 0/3] LoongArch: KVM: Add Binary Translation extension support Bibo Mao
2024-05-13 1:12 ` [PATCH 1/3] LoongArch: KVM: Add HW " Bibo Mao
2024-05-13 1:12 ` Bibo Mao [this message]
2024-05-13 1:12 ` [PATCH 3/3] LoongArch: KVM: Add vm migration support for LBT feature Bibo Mao
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