From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.8bytes.org (mail.8bytes.org [85.214.250.239]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CDFF23EFD0B; Mon, 8 Jun 2026 14:43:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=85.214.250.239 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780929811; cv=none; b=I7xFMSXyBOT8l/UWK27YnFuE/gpndqgOEs3RCELI7mLhsYMUitlFcoq/N8JVkyB6cPH1VE0Lve2EpYFbYn9ij9ct27hE8x7Sq78dmglpS3LsfElkT4nh5JhXB8GNkrTmYxI/bs8kPebHozeYsqzFJ8fn/DM2DSG8EDmg9Uh95x0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780929811; c=relaxed/simple; bh=pcp4odT3NNnPWZpyjZ6003LhvZo4f0DoCv0aN5fr2xc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h7nzmxM+YhOO/rJ4yc8VkOZLJsz92BUkOULAHlOS8aSCAje4MOstpiZywzJfLm2fRgsoj/hrSERZUqSTzm5ADbkP3CsHEWqHqT6zquvP3SC0NHkFK/IN7lvcloY+7jDYOgLcW4ge3S3QoVxCkKlXQ8KkGhaMw4VNHJDTHKeiK2M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=8bytes.org; spf=pass smtp.mailfrom=8bytes.org; arc=none smtp.client-ip=85.214.250.239 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=8bytes.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=8bytes.org Received: from io.home.8bytes.org (p4ffe1d30.dip0.t-ipconnect.de [79.254.29.48]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.8bytes.org (Postfix) with ESMTPSA id B9A7C2028D0; Mon, 8 Jun 2026 16:43:14 +0200 (CEST) From: =?UTF-8?q?J=C3=B6rg=20R=C3=B6del?= To: Paolo Bonzini , Sean Christopherson Cc: Tom Lendacky , ashish.kalra@amd.com, michael.roth@amd.com, nsaenz@amazon.com, anelkz@amazon.de, James.Bottomley@HansenPartnership.com, Melody Wang , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, x86@kernel.org, coconut-svsm@lists.linux.dev, joerg.roedel@amd.com Subject: [PATCH 45/60] kvm: x86: Update state for all plane VCPUs after CPUID update Date: Mon, 8 Jun 2026 16:42:37 +0200 Message-ID: <20260608144252.351443-46-joro@8bytes.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260608144252.351443-1-joro@8bytes.org> References: <20260608144252.351443-1-joro@8bytes.org> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Joerg Roedel Make sure to update CPUID dependent state for all VCPUs of a given plane when CPUID state is updated. Signed-off-by: Joerg Roedel --- arch/x86/kvm/cpuid.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 27e2f7e25038..fab075bb6fdc 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -513,6 +513,8 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2, { struct kvm_vcpu_common *common = vcpu->common; u32 vcpu_caps[NR_KVM_CPU_CAPS]; + struct kvm_vcpu *v; + unsigned i; int r; /* @@ -562,9 +564,11 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2, #ifdef CONFIG_KVM_HYPERV if (kvm_cpuid_has_hyperv(vcpu)) { - r = kvm_hv_vcpu_init(vcpu); - if (r) - goto err; + vcpu_for_each_plane(common, i, v) { + r = kvm_hv_vcpu_init(vcpu); + if (r) + goto err; + } } #endif @@ -572,10 +576,12 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2, if (r) goto err; + vcpu_for_each_plane(vcpu->common, i, v) { #ifdef CONFIG_KVM_XEN - vcpu->arch.xen.cpuid = kvm_get_hypervisor_cpuid(vcpu, XEN_SIGNATURE); + v->arch.xen.cpuid = kvm_get_hypervisor_cpuid(vcpu, XEN_SIGNATURE); #endif - kvm_vcpu_after_set_cpuid(vcpu); + kvm_vcpu_after_set_cpuid(v); + } success: kvfree(e2); -- 2.53.0