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Sat, 27 Dec 2025 01:48:36 -0800 (PST) X-Google-Smtp-Source: AGHT+IH1pFD6d6W+lX0Ky/BGS5ax30VL9itizGK8C73Flx07LBaDxGXpY8So32uWdlN0Cp0DjINA1A== X-Received: by 2002:a05:600c:c091:b0:477:7b9a:bb07 with SMTP id 5b1f17b1804b1-47d195a98d5mr228100165e9.35.1766828915785; Sat, 27 Dec 2025 01:48:35 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Zhao Liu , Farrah Chen , Zide Chen , Xiaoyao Li Subject: [PULL 090/153] i386/cpu: Mark cet-u & cet-s xstates as migratable Date: Sat, 27 Dec 2025 10:46:55 +0100 Message-ID: <20251227094759.35658-16-pbonzini@redhat.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251227091622.20725-1-pbonzini@redhat.com> References: <20251227091622.20725-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" From: Zhao Liu Cet-u and cet-s are supervisor xstates. Their states are saved/loaded by saving/loading related CET MSRs. And there're the "vmstate_cet" and "vmstate_pl0_ssp" to migrate these MSRs. Thus, it's safe to mark them as migratable. Tested-by: Farrah Chen Signed-off-by: Zhao Liu Link: https://lore.kernel.org/r/20251211060801.3600039-19-zhao1.liu@intel.c= om Signed-off-by: Paolo Bonzini --- 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 b1bbb099f33..6774f662342 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1484,7 +1484,8 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D { .ecx =3D 1, .reg =3D R_ECX, }, - .migratable_flags =3D XSTATE_ARCH_LBR_MASK, + .migratable_flags =3D XSTATE_CET_U_MASK | XSTATE_CET_S_MASK | + XSTATE_ARCH_LBR_MASK, }, [FEAT_XSAVE_XSS_HI] =3D { .type =3D CPUID_FEATURE_WORD, --=20 2.52.0