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[35.185.200.132]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7af82603dd3sm595170b3a.53.2025.11.05.16.01.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Nov 2025 16:01:31 -0800 (PST) Date: Thu, 6 Nov 2025 00:01:27 +0000 From: David Matlack To: Raghavendra Rao Ananta Cc: Alex Williamson , Alex Williamson , Josh Hilke , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/4] vfio: selftests: Add helper to set/override a vf_token Message-ID: References: <20251104003536.3601931-1-rananta@google.com> <20251104003536.3601931-4-rananta@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: <20251104003536.3601931-4-rananta@google.com> On 2025-11-04 12:35 AM, Raghavendra Rao Ananta wrote: > Not only at init, but a vf_token can also be set via the > VFIO_DEVICE_FEATURE ioctl, by setting the > VFIO_DEVICE_FEATURE_PCI_VF_TOKEN flag. Add an API to utilize this > functionality from the test code. Say what the commit does first. Then add context (e.g. compare/contrast to other ways of setting the VF token). Also please add a sentence about how this will be used in a subsequent commit, since there are no callers in this commit. > +void vfio_device_set_vf_token(int fd, const char *vf_token) > +{ > + uuid_t token_uuid = {0}; > + > + VFIO_ASSERT_NOT_NULL(vf_token, "vf_token is NULL"); nit: The help message here is not needed. It will be very obvious that vf_token is NULL if this assert fires :)