From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BD83017C216; Thu, 22 Aug 2024 14:24:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724336659; cv=none; b=PsdEo35pCvEGf/PAvLkmoa+9D9rSpuaHE/z4Xd2eo++rDqsyrmDP5m9mVDE1VAO2tuRtThSpsZpakLO9Ru1paC+oLw0AFJuh76qUV+utO/beHFg4IHYXYti1Y/Iw2bzqzW1T4HvOOSPxZC6Tlej2JGnnkiM3CEu8wQh1x/8AJLY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724336659; c=relaxed/simple; bh=0qohOtlUlbQ+S7qqgBywKvuqNp39ChdhI74mz8dd2Dw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=nGgmEB/vGxBpcfO7d6JgoInQV9kGvnoxItRkOrx4+7rANzNkjnZkFDCHfsmud8Ol5Yjeb/90UMTO1I0B8o+pGCQwW8+mjAvqmmj4OlKJRlumkeHEnDxypzfsIZyqfWEiMQ9reZw7p1Ykgfr0sK7kfl6FXG9ERzPPYz+IbYS9BBs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ozyO7lH5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ozyO7lH5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3890DC32782; Thu, 22 Aug 2024 14:24:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724336659; bh=0qohOtlUlbQ+S7qqgBywKvuqNp39ChdhI74mz8dd2Dw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ozyO7lH51LENj0pz8yJ9fFnASqP4aSjXxFuKZyH76eEZfApci5B9okfoLmHxgZvRl kmY9knEHycx303qDiMZFMJsfJpqn6tVYWhMcbpsPdtqyR08wW7dGyBdAsKT/SPSplB fsLLGJh7rF1T+sOm5wl9+C8L1ISbJpzVAWk59zSHzqRq0uD/9uvelRrd7eTZKAPmsX EE6ZTNoCRSU4stcONEEC1E2/aGmZZLiutDtV3jSzJnNIXTcN7FHtjLNHbi+zf06rbl jcQwthABEVYJa5D5/i7LiPEJzJe88IgPhkFgJFPF1dhSGtFvraxCKRnGO8MM55oKVU JebJWUwYL2VmA== 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 4.95) (envelope-from ) id 1sh8jY-005yPd-K8; Thu, 22 Aug 2024 15:24:16 +0100 From: Marc Zyngier To: Paolo Bonzini , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, David Matlack , David Stevens Subject: Re: (subset) [PATCH v12 01/84] KVM: arm64: Release pfn, i.e. put page, if copying MTE tags hits ZONE_DEVICE Date: Thu, 22 Aug 2024 15:24:11 +0100 Message-Id: <172433664067.3702537.13271681605926473288.b4-ty@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240726235234.228822-2-seanjc@google.com> References: <20240726235234.228822-1-seanjc@google.com> <20240726235234.228822-2-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, oliver.upton@linux.dev, zhaotianrui@loongson.cn, maobibo@loongson.cn, chenhuacai@kernel.org, mpe@ellerman.id.au, anup@brainfault.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, borntraeger@linux.ibm.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, seanjc@google.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, dmatlack@google.com, stevensd@chromium.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Fri, 26 Jul 2024 16:51:10 -0700, Sean Christopherson wrote: > Put the page reference acquired by gfn_to_pfn_prot() if > kvm_vm_ioctl_mte_copy_tags() runs into ZONE_DEVICE memory. KVM's less- > than-stellar heuristics for dealing with pfn-mapped memory means that KVM > can get a page reference to ZONE_DEVICE memory. > > Applied to next, thanks! [01/84] KVM: arm64: Release pfn, i.e. put page, if copying MTE tags hits ZONE_DEVICE commit: ae41d7dbaeb4f79134136cd65ad7015cf9ccf78a Cheers, M. -- Without deviation from the norm, progress is not possible.