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X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Michal Wajdeczko wrote on nie [2026-lut-15 21:33:23 +0100]: > Add initial documentation for recently added VRAM provisioning > Xe driver specific SR-IOV sysfs files under device/sriov_admin. > > Signed-off-by: Michal Wajdeczko > Cc: Rodrigo Vivi > --- > .../ABI/testing/sysfs-driver-intel-xe-sriov | 31 +++++++++++++++++++ > 1 file changed, 31 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov > index 7f5ef9eada53..14b61bd2d602 100644 > --- a/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov > +++ b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov > @@ -129,6 +129,37 @@ Description: > -EIO if FW refuses to change the provisioning. > > > +What: /sys/bus/pci/drivers/xe/.../sriov_admin/.bulk_profile/vram_quota > +What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf/profile/vram_quota > +Date: February 2026 > +KernelVersion: 7.0 > +Contact: intel-xe@lists.freedesktop.org > +Description: > + These files allow to perform initial VFs VRAM provisioning prior to VFs > + enabling or to change VFs VRAM provisioning once the VFs are enabled. > + Any non-zero initial VRAM provisioning will block VFs auto-provisioning. > + Without initial VRAM provisioning those files will show result of the > + VRAM auto-provisioning performed by the PF once the VFs are enabled. > + Once the VFs are disabled, all VRAM provisioning will be released. > + These files are visible only on discrete Intel Xe platforms with VRAM > + and are writeable only if dynamic VFs VRAM provisioning is supported. > + > + .bulk_profile/vram_quota: (WO) unsigned integer > + The amount of the provisioned VRAM in [bytes] for each VF. > + Actual final value might be aligned per HW/FW requirements. > + > + profile/vram_quota: (RW) unsigned integer > + The amount of the provisioned VRAM in [bytes] for this VF. > + Actual quantum value might be aligned per HW/FW requirements. Copy-paste from exec_quantum_ms ? :) > + > + Default is 0 (unprovisioned). > + > + Writes to these attributes may fail with errors like: > + -EINVAL if provided input is malformed or not recognized, > + -EPERM if change is not applicable on given HW/FW, > + -EIO if FW refuses to change the provisioning. > + > + > What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf/stop > Date: October 2025 > KernelVersion: 6.19 With fix: Reviewed-by: Piotr Piórkowski > -- > 2.47.1 > --