From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04909348C7B; Wed, 9 Sep 2026 13:47:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788961626; cv=none; b=WgdW80JmvgSw7GN+7uG40I/MZDs9H7p3ZCkgn+LBcy8XCGl+kszKestn9I9Clom3RaLdW7XA7C74j8Q+auQ/gGS+Yp2FlqsrX/wGijvDHX5W+M908mPpPemomsJq3S516v3WF0/mZTDzc7/QxoPNykBitmmsMl6CfiM/APjEAG8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788961626; c=relaxed/simple; bh=F6erifaC/DxvT6yaFqaHckRqn70BQ13e7aJpsnphB1M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=juhpvrLc/yuwyPhJAWk7D+JZhxkH6HG7H7l8bF5ss+dw2GQLxSWAGb3/wsyBcxeNhqyKoHEzo/RMcdj4jVPiu5V6oTu7zhKhgppc+O0UVo1nGFlbdWxk6AkCxPXr/H9eaNiIRdBa74gBqLecniEPLYAyub10iEs293rnE5iKqDA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kZvyb0SE; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="kZvyb0SE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B0D71F00A3A; Wed, 9 Sep 2026 13:47:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788961624; bh=pk5iYlLy4KCs2/EdJFkDmalP+zElq+qzXEJM/icutWs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kZvyb0SEvZ5Vl+5AkVOJkCUozpe2YzMTgQqfb8iaCDwjAjacHqB5gSPqeWWAr5lgX SZ5udNqJz1IjNayjIE8SiYFo0qpYNnf/HUGBh7GuuoOFArSq/dk62sFOwNMXwuGLLx hjYi+pqthnLUT8gbE63yMxmcPHZPHa+Q9RgKwasg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Roth , Sean Christopherson , Sasha Levin Subject: [PATCH 7.2 014/556] KVM: x86/mmu: Fold kvm_mmu_zap_memslot() into kvm_arch_flush_shadow_memslot() Date: Wed, 9 Sep 2026 15:34:54 +0200 Message-ID: <20260909134230.984985059@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134230.441546314@linuxfoundation.org> References: <20260909134230.441546314@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sean Christopherson [ Upstream commit 06d38eaa78fdac1cc889f261fa420eba8e9caa1a ] Fold kvm_mmu_zap_memslot() into its sole caller so that its GFN range structure can be used to trigger guest_memfd invalidations regardless of whether KVM will do a partial or full zap of the MMU. No functional change intended. Cc: stable@vger.kernel.org # 6.12.x Reviewed-by: Michael Roth Link: https://patch.msgid.link/20260709204948.1988414-8-seanjc@google.com Signed-off-by: Sean Christopherson Stable-dep-of: d1a3c2162334 ("KVM: SEV: Forcefully invalidate SNP VMSA if its backing gmem page is zapped") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/mmu/mmu.c | 35 +++++++++++++++-------------------- 1 file changed, 15 insertions(+), 20 deletions(-) --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -7535,8 +7535,14 @@ out_flush: kvm_mmu_remote_flush_or_zap(kvm, &invalid_list, flush); } -static void kvm_mmu_zap_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot) +static inline bool kvm_memslot_flush_zap_all(struct kvm *kvm) +{ + return kvm->arch.vm_type == KVM_X86_DEFAULT_VM && + kvm_check_has_quirk(kvm, KVM_X86_QUIRK_SLOT_ZAP_ALL); +} + +void kvm_arch_flush_shadow_memslot(struct kvm *kvm, + struct kvm_memory_slot *slot) { struct kvm_gfn_range range = { .slot = slot, @@ -7547,25 +7553,14 @@ static void kvm_mmu_zap_memslot(struct k }; bool flush; - write_lock(&kvm->mmu_lock); - flush = kvm_unmap_gfn_range(kvm, &range); - kvm_mmu_zap_memslot_pages_and_flush(kvm, slot, flush); - write_unlock(&kvm->mmu_lock); -} - -static inline bool kvm_memslot_flush_zap_all(struct kvm *kvm) -{ - return kvm->arch.vm_type == KVM_X86_DEFAULT_VM && - kvm_check_has_quirk(kvm, KVM_X86_QUIRK_SLOT_ZAP_ALL); -} - -void kvm_arch_flush_shadow_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot) -{ - if (kvm_memslot_flush_zap_all(kvm)) + if (kvm_memslot_flush_zap_all(kvm)) { kvm_mmu_zap_all_fast(kvm); - else - kvm_mmu_zap_memslot(kvm, slot); + } else { + write_lock(&kvm->mmu_lock); + flush = kvm_unmap_gfn_range(kvm, &range); + kvm_mmu_zap_memslot_pages_and_flush(kvm, slot, flush); + write_unlock(&kvm->mmu_lock); + } } void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen)