From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3182810ED663 for ; Fri, 27 Mar 2026 11:37:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5MfeIHpZpAJ9rRDacy+nNlZvNtDMNG/sjtvRsZMUqdg=; b=m9HAlb4XTyB5o7yfXBBQ3wjulg QEX6eAPsbqhF8Pj1IZRXmPDPeQ9EMzdofAV/khDJNR/HPhvKIGtQYO/Esh0oQ4Ut/wsnliC73sjRT A4c9dzvHVaxo/N2fwU1ILx8DsQn0HvqpFBvMbN+9HeH295CLivTHNzemlF7R6uzAJ10CMsb9pSyf7 BauYXEc3KAkuC92/MFWs4okzdvzq2cCFiTgSPuDKhEQWFn1V47yIx6q1bA2MgTdYdIf6YmlLG9hvY mJU3K3Omo/evbwRSIGfib40WmNZQYwZHaCfr7TRFW1AasetLevPzNt9YixkHOpGdBOhE8r3bUdaXW Ab0ybd6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w65Uh-00000007FQD-3RNe; Fri, 27 Mar 2026 11:36:51 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w65UM-00000007F78-0ZNj for linux-arm-kernel@lists.infradead.org; Fri, 27 Mar 2026 11:36:30 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 78DA761870; Fri, 27 Mar 2026 11:36:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18DDBC2BCB0; Fri, 27 Mar 2026 11:36:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774611389; bh=mw/ote3jncKQHaloT0cPobEmS1MkiecE/Mak5sizrCY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ELMREghpzJwPnjJeWDcju2tK/yLMRR+/4RhMhlBC8wMCRqbr2Kpdy/C8VqQpYbirQ kAftfrq5Njx+dwTJN85kaSmS37Q33aYwJ+Va4nKp1iDkCFOiVA7uiGY7Xe95Zk8RSl 0BNLa49DXw+9OGjfMLB4GLQdPTQgusTesTdfnyiozHTZe5A8r7MsQu+VtUWhT5L79y d0a/XJR6RLDvUVPhE6C9kaT7At8hfeHNw2CQFFzPKK+RcwiZzKNdomTrAB9bhX8D7b phKb+W/H7MuqMnGf6+3c6sQrtXKh80VjLU3btGPAGQP38ebt5rFmzriJnzYM/I3C5g Z2mnJn65Ch5Sw== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1w65UJ-00000006K4a-0j10; Fri, 27 Mar 2026 11:36:27 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Fuad Tabba , Will Deacon , Quentin Perret Subject: [PATCH v2 21/30] KVM: arm64: Kill topup_memcache from kvm_s2_fault Date: Fri, 27 Mar 2026 11:36:09 +0000 Message-ID: <20260327113618.4051534-22-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260327113618.4051534-1-maz@kernel.org> References: <20260327113618.4051534-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oupton@kernel.org, yuzenghui@huawei.com, tabba@google.com, will@kernel.org, qperret@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The topup_memcache field can be easily replaced by the equivalent conditions, and the resulting code is not much worse. Tested-by: Fuad Tabba Reviewed-by: Fuad Tabba Reviewed-by: Suzuki K Poulose Signed-off-by: Marc Zyngier --- arch/arm64/kvm/mmu.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index e8bda71e862b2..5b05caecdbd92 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1712,7 +1712,6 @@ static short kvm_s2_resolve_vma_size(const struct kvm_s2_fault_desc *s2fd, struct kvm_s2_fault { bool writable; - bool topup_memcache; bool mte_allowed; bool is_vma_cacheable; bool s2_force_noncacheable; @@ -1983,9 +1982,8 @@ static int user_mem_abort(const struct kvm_s2_fault_desc *s2fd) .logging_active = logging_active, .force_pte = logging_active, .prot = KVM_PGTABLE_PROT_R, - .topup_memcache = !perm_fault || (logging_active && kvm_is_write_fault(s2fd->vcpu)), }; - void *memcache; + void *memcache = NULL; int ret; /* @@ -1994,9 +1992,11 @@ static int user_mem_abort(const struct kvm_s2_fault_desc *s2fd) * only exception to this is when dirty logging is enabled at runtime * and a write fault needs to collapse a block entry into a table. */ - ret = prepare_mmu_memcache(s2fd->vcpu, fault.topup_memcache, &memcache); - if (ret) - return ret; + if (!perm_fault || (logging_active && kvm_is_write_fault(s2fd->vcpu))) { + ret = prepare_mmu_memcache(s2fd->vcpu, true, &memcache); + if (ret) + return ret; + } /* * Let's check if we will get back a huge page backed by hugetlbfs, or -- 2.47.3