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[34.142.255.199]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-842828821c5sm23191040b3a.32.2026.06.10.07.37.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jun 2026 07:37:13 -0700 (PDT) Date: Wed, 10 Jun 2026 14:37:04 +0000 From: Pranjal Shrivastava To: Jason Gunthorpe Cc: David Matlack , kexec@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, Adithya Jayachandran , Alexander Graf , Alex Williamson , Bjorn Helgaas , Chris Li , David Rientjes , Jacob Pan , Jonathan Corbet , Josh Hilke , Leon Romanovsky , Lukas Wunner , Mike Rapoport , Parav Pandit , Pasha Tatashin , Pratyush Yadav , Saeed Mahameed , Samiullah Khawaja , Shuah Khan , Vipin Sharma , William Tu , Yi Liu Subject: Re: [PATCH v6 08/12] PCI: liveupdate: Inherit ACS flags in incoming preserved devices Message-ID: References: <20260522202410.3104264-1-dmatlack@google.com> <20260522202410.3104264-9-dmatlack@google.com> <20260610000704.GR1962447@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260610000704.GR1962447@nvidia.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260610_073715_898179_94BD7F48 X-CRM114-Status: GOOD ( 10.46 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Tue, Jun 09, 2026 at 09:07:04PM -0300, Jason Gunthorpe wrote: > On Tue, Jun 09, 2026 at 05:20:14PM +0000, Pranjal Shrivastava wrote: > > > Now, the attacker has an opportunity with Liveupdate, since the devices > > are already assigned, if *somehow* it flips a bit like ACS_RR, the > > If this is possible then your environment is already security broken, > no need to involve live update. Ack. Alright. Thanks, Praan