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[82.27.106.168]) by smtp.gmail.com with ESMTPSA id r18sm2856379wrs.47.2021.10.08.08.17.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Oct 2021 08:18:00 -0700 (PDT) Date: Fri, 8 Oct 2021 16:17:37 +0100 From: Jean-Philippe Brucker To: "Michael S. Tsirkin" Subject: Re: [PATCH v4 00/11] virtio-iommu: Add ACPI support Message-ID: References: <20211001173358.863017-1-jean-philippe@linaro.org> <20211005113719-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211005113719-mutt-send-email-mst@kernel.org> Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=jean-philippe@linaro.org; helo=mail-wr1-x42c.google.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, 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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, ehabkost@redhat.com, shannon.zhaosl@gmail.com, richard.henderson@linaro.org, qemu-devel@nongnu.org, eric.auger@redhat.com, qemu-arm@nongnu.org, imammedo@redhat.com, ani@anisinha.ca, pbonzini@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, Oct 05, 2021 at 11:45:42AM -0400, Michael S. Tsirkin wrote: > Looks like this can not be applied yet because the bypass bit > isn't in yet. what's up with that? The boot-bypass bit isn't a hard dependency for this series, but it will be needed for full support eventually. It will be delayed by spec and Linux header changes In the meantime we can work around the problem by having the boot disks bypass the IOMMU (virtio without iommu-platform, or iommu-bypass bus). Thanks, Jean