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Mon, 29 Sep 2025 08:58:31 -0700 (PDT) Received: from ziepe.ca ([130.41.10.202]) by smtp.gmail.com with ESMTPSA id af79cd13be357-85e95e91765sm779413685a.46.2025.09.29.08.58.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Sep 2025 08:58:30 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1v3GGj-0000000CM6Z-3Hag; Mon, 29 Sep 2025 12:58:29 -0300 Date: Mon, 29 Sep 2025 12:58:29 -0300 From: Jason Gunthorpe To: Samiullah Khawaja Cc: David Woodhouse , Lu Baolu , Joerg Roedel , Will Deacon , Pasha Tatashin , iommu@lists.linux.dev, Robin Murphy , Pratyush Yadav , Kevin Tian , linux-kernel@vger.kernel.org, Saeed Mahameed , Adithya Jayachandran , Parav Pandit , Leon Romanovsky , William Tu , Vipin Sharma , dmatlack@google.com, zhuyifei@google.com, Chris Li , praan@google.com Subject: Re: [RFC PATCH 09/15] iommu/vt-d: Add live update freeze callback Message-ID: <20250929155829.GF2695987@ziepe.ca> References: <20250928190624.3735830-1-skhawaja@google.com> <20250928190624.3735830-10-skhawaja@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=us-ascii Content-Disposition: inline In-Reply-To: <20250928190624.3735830-10-skhawaja@google.com> On Sun, Sep 28, 2025 at 07:06:17PM +0000, Samiullah Khawaja wrote: > +static int intel_liveupdate_freeze(struct liveupdate_subsystem *handle, u64 *data) > +{ > + struct iommu_ser *ser = __va(*data); > + > + ser->iommu_units_phys = __pa(ser->iommu_units); > + ser->devices_phys = __pa(ser->devices); Why didn't this happen at an earlier stage? It makes no sense to some hacky naked __pa Jason