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Tue, 11 Oct 2022 03:28:33 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5bEh2FFNsl+r5bsWf7bGhCy/esq98jEHQVALRgNT6bnAvXcBh2XSxHi4CpFoxHZ0yeMfp4MQ== X-Received: by 2002:a17:906:15ca:b0:78d:b7b3:2afa with SMTP id l10-20020a17090615ca00b0078db7b32afamr7399873ejd.69.1665484113060; Tue, 11 Oct 2022 03:28:33 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Alexander Graf Subject: [PULL 32/37] x86: Implement MSR_CORE_THREAD_COUNT MSR Date: Tue, 11 Oct 2022 12:26:55 +0200 Message-Id: <20221011102700.319178-33-pbonzini@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221011102700.319178-1-pbonzini@redhat.com> References: <20221011102700.319178-1-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=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-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" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1665487316302100001 Content-Type: text/plain; charset="utf-8" From: Alexander Graf Intel CPUs starting with Haswell-E implement a new MSR called MSR_CORE_THREAD_COUNT which exposes the number of threads and cores inside of a package. This MSR is used by XNU to populate internal data structures and not implementing it prevents virtual machines with more than 1 vCPU from booting if the emulated CPU generation is at least Haswell-E. This patch propagates the existing hvf logic from patch 027ac0cb516 ("target/i386/hvf: add rdmsr 35H MSR_CORE_THREAD_COUNT") to TCG. Signed-off-by: Alexander Graf Message-Id: <20221004225643.65036-2-agraf@csgraf.de> Signed-off-by: Paolo Bonzini --- target/i386/tcg/sysemu/misc_helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/i386/tcg/sysemu/misc_helper.c b/target/i386/tcg/sysemu/= misc_helper.c index 1328aa656f..e1528b7f80 100644 --- a/target/i386/tcg/sysemu/misc_helper.c +++ b/target/i386/tcg/sysemu/misc_helper.c @@ -450,6 +450,11 @@ void helper_rdmsr(CPUX86State *env) case MSR_IA32_UCODE_REV: val =3D x86_cpu->ucode_rev; break; + case MSR_CORE_THREAD_COUNT: { + CPUState *cs =3D CPU(x86_cpu); + val =3D (cs->nr_threads * cs->nr_cores) | (cs->nr_cores << 16); + break; + } default: if ((uint32_t)env->regs[R_ECX] >=3D MSR_MC0_CTL && (uint32_t)env->regs[R_ECX] < MSR_MC0_CTL + --=20 2.37.3