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Sat, 29 Apr 2023 05:16:48 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5d6NM2NoMj5fVpNk57xLQR8Y8cIvOChVQ0BHEhIncP8wT5JLAfEduUy74m+7elKr+xw262ug== X-Received: by 2002:a17:906:ee86:b0:957:12a6:ac9 with SMTP id wt6-20020a170906ee8600b0095712a60ac9mr8337448ejb.36.1682770607849; Sat, 29 Apr 2023 05:16:47 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Jiaxi Chen , Tao Su , Xiaoyao Li Subject: [PULL 05/17] target/i386: Add support for CMPCCXADD in CPUID enumeration Date: Sat, 29 Apr 2023 14:16:24 +0200 Message-Id: <20230429121636.230934-6-pbonzini@redhat.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230429121636.230934-1-pbonzini@redhat.com> References: <20230429121636.230934-1-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 client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.171, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @redhat.com) X-ZM-MESSAGEID: 1682770733322100001 Content-Type: text/plain; charset="utf-8" From: Jiaxi Chen CMPccXADD is a new set of instructions in the latest Intel platform Sierra Forest. This new instruction set includes a semaphore operation that can compare and add the operands if condition is met, which can improve database performance. The bit definition: CPUID.(EAX=3D7,ECX=3D1):EAX[bit 7] Add CPUID definition for CMPCCXADD. Signed-off-by: Jiaxi Chen Signed-off-by: Tao Su Reviewed-by: Xiaoyao Li Message-Id: <20230303065913.1246327-2-tao1.su@linux.intel.com> Signed-off-by: Paolo Bonzini --- target/i386/cpu.c | 2 +- target/i386/cpu.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 73dd99374abe..67210ffd79b9 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -875,7 +875,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D { .type =3D CPUID_FEATURE_WORD, .feat_names =3D { NULL, NULL, NULL, NULL, - "avx-vnni", "avx512-bf16", NULL, NULL, + "avx-vnni", "avx512-bf16", NULL, "cmpccxadd", NULL, NULL, "fzrm", "fsrs", "fsrc", NULL, NULL, NULL, NULL, NULL, NULL, NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index d243e290d385..d5843c15558f 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -907,6 +907,8 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord= w, #define CPUID_7_1_EAX_AVX_VNNI (1U << 4) /* AVX512 BFloat16 Instruction */ #define CPUID_7_1_EAX_AVX512_BF16 (1U << 5) +/* CMPCCXADD Instructions */ +#define CPUID_7_1_EAX_CMPCCXADD (1U << 7) /* Fast Zero REP MOVS */ #define CPUID_7_1_EAX_FZRM (1U << 10) /* Fast Short REP STOS */ --=20 2.40.0