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a="59885376" X-IronPort-AV: E=Sophos;i="6.15,282,1739865600"; d="scan'208";a="59885376" X-CSE-ConnectionGUID: Y9lxdFEwQpS5XAYuBiFh6A== X-CSE-MsgGUID: mfQuUr/gSUmRCsaTIpCgkg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,282,1739865600"; d="scan'208";a="138374819" Date: Mon, 12 May 2025 10:26:04 -0700 From: Pawan Gupta To: Paolo Bonzini Cc: qemu-devel@nongnu.org, Chao Gao Subject: [PATCH] target/i386: Make ITS_NO available to guests Message-ID: <8c1797e488b42650f62d816f25c58726eb522fad.1745946029.git.pawan.kumar.gupta@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline 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: none client-ip=198.175.65.13; envelope-from=pawan.kumar.gupta@linux.intel.com; helo=mgamail.intel.com X-Spam_score_int: -38 X-Spam_score: -3.9 X-Spam_bar: --- X-Spam_report: (-3.9 / 5.0 requ) AC_FROM_MANY_DOTS=1.959, BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.551, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1747070850819019000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When a system is not affected by Indirect Target Selection (ITS) vulnerability, VMMs set ITS_NO bit in MSR IA32_ARCH_CAPABILITIES to let the guest know that it is not affected. Make it available to guests. Signed-off-by: Pawan Gupta --- target/i386/cpu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 1b64ceaaba46..89807ee1aace 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1370,6 +1370,14 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D= { "bhi-no", NULL, NULL, NULL, "pbrsb-no", NULL, "gds-no", "rfds-no", "rfds-clear", NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, "its-no", NULL, }, .msr =3D { .index =3D MSR_IA32_ARCH_CAPABILITIES, base-commit: 56c6e249b6988c1b6edc2dd34ebb0f1e570a1365 --=20 2.34.1