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| author | Piotr Piórkowski <piotr.piorkowski@intel.com> | 2026-03-09 16:24:49 +0100 |
|---|---|---|
| committer | Michał Winiarski <michal.winiarski@intel.com> | 2026-03-24 10:47:52 +0100 |
| commit | 9e60ee0e6dc2c81e0e5b285d09807a361f6745ce (patch) | |
| tree | 4c80ce566199696951c0e32edfee4ac50e469472 /drivers/vfio | |
| parent | 2de36e3f72dae2035b2742ffe3355e43067a81ad (diff) | |
| download | linux-next-9e60ee0e6dc2c81e0e5b285d09807a361f6745ce.tar.gz linux-next-9e60ee0e6dc2c81e0e5b285d09807a361f6745ce.zip | |
vfio/xe: Notify PF about VF FLR in reset_prepare
Hook into the PCI error handler reset_prepare() callback to notify
the PF about an upcoming VF FLR before reset_done() is executed.
This enables early FLR_PREPARE signaling and ensures that the PF is
aware of the reset before the completion wait begins.
Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Alex Williamson <alex@shazbot.org>
Link: https://patch.msgid.link/20260309152449.910636-3-piotr.piorkowski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/pci/xe/main.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/vfio/pci/xe/main.c b/drivers/vfio/pci/xe/main.c index fff95b2d5dde..88acfcf840fc 100644 --- a/drivers/vfio/pci/xe/main.c +++ b/drivers/vfio/pci/xe/main.c @@ -85,6 +85,19 @@ again: spin_unlock(&xe_vdev->reset_lock); } +static void xe_vfio_pci_reset_prepare(struct pci_dev *pdev) +{ + struct xe_vfio_pci_core_device *xe_vdev = pci_get_drvdata(pdev); + int ret; + + if (!pdev->is_virtfn) + return; + + ret = xe_sriov_vfio_flr_prepare(xe_vdev->xe, xe_vdev->vfid); + if (ret) + dev_err(&pdev->dev, "Failed to prepare FLR: %d\n", ret); +} + static void xe_vfio_pci_reset_done(struct pci_dev *pdev) { struct xe_vfio_pci_core_device *xe_vdev = pci_get_drvdata(pdev); @@ -127,6 +140,7 @@ static void xe_vfio_pci_reset_done(struct pci_dev *pdev) } static const struct pci_error_handlers xe_vfio_pci_err_handlers = { + .reset_prepare = xe_vfio_pci_reset_prepare, .reset_done = xe_vfio_pci_reset_done, .error_detected = vfio_pci_core_aer_err_detected, }; |