From: Zhao Liu <zhao1.liu@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org,
"Chang S . Bae" <chang.seok.bae@intel.com>,
Zide Chen <zide.chen@intel.com>,
Xudong Hao <xudong.hao@intel.com>, Zhao Liu <zhao1.liu@intel.com>
Subject: [PATCH 5/5] i386/cpu: Mark apx xstate as migratable
Date: Tue, 18 Nov 2025 14:58:17 +0800 [thread overview]
Message-ID: <20251118065817.835017-6-zhao1.liu@intel.com> (raw)
In-Reply-To: <20251118065817.835017-1-zhao1.liu@intel.com>
Apx xstate is user xstate. The related registers are cached in
X86CPUState. And there's a vmsd "vmstate_apx" to migrate these
registers.
Thus, it's safe to mark it as migratable.
Tested-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
target/i386/cpu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 9cc553a86442..f703b1478d71 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1544,7 +1544,8 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.migratable_flags = XSTATE_FP_MASK | XSTATE_SSE_MASK |
XSTATE_YMM_MASK | XSTATE_BNDREGS_MASK | XSTATE_BNDCSR_MASK |
XSTATE_OPMASK_MASK | XSTATE_ZMM_Hi256_MASK | XSTATE_Hi16_ZMM_MASK |
- XSTATE_PKRU_MASK | XSTATE_XTILE_CFG_MASK | XSTATE_XTILE_DATA_MASK,
+ XSTATE_PKRU_MASK | XSTATE_XTILE_CFG_MASK | XSTATE_XTILE_DATA_MASK |
+ XSTATE_APX_MASK,
},
[FEAT_XSAVE_XCR0_HI] = {
.type = CPUID_FEATURE_WORD,
--
2.34.1
next prev parent reply other threads:[~2025-11-18 6:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-18 6:58 [PATCH 0/5] i386/cpu: Support APX for KVM Zhao Liu
2025-11-18 6:58 ` [PATCH 1/5] i386/cpu: Add APX EGPRs into xsave area Zhao Liu
2025-11-18 6:58 ` [PATCH 2/5] i386/cpu: Cache EGPRs in CPUX86State Zhao Liu
2025-11-18 8:43 ` Paolo Bonzini
2025-11-19 7:47 ` Zhao Liu
2025-11-18 6:58 ` [PATCH 3/5] i386/cpu: Add APX migration support Zhao Liu
2025-11-18 6:58 ` [PATCH 4/5] i386/cpu: Support APX CPUIDs Zhao Liu
2025-11-18 8:44 ` Paolo Bonzini
2025-11-19 7:34 ` Zhao Liu
2025-11-19 8:04 ` Paolo Bonzini
2025-11-19 18:04 ` Florian Weimer
2025-11-19 18:08 ` Paolo Bonzini
2025-11-18 6:58 ` Zhao Liu [this message]
2025-11-18 8:45 ` [PATCH 0/5] i386/cpu: Support APX for KVM Paolo Bonzini
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