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[drm] GT0: VF is trying to read an inaccessible register 0x35b004+0x0 >> | RIP: 0010:xe_gt_sriov_vf_read32+0x5e2/0x8a0 [xe] >> | Call Trace: >> | xe_mmio_read32+0x110/0x280 [xe] >> | read_residency_counter+0x42/0xd0 [xe] >> | dgfx_pkg_residencies_show+0x115/0x190 [xe] >> | .. [drm] Package G2 counter failed to read, ret -19 >> >> or >> >> | .. [drm] GT0: VF is trying to read an inaccessible register 0x35b004+0x0 >> | RIP: 0010:xe_gt_sriov_vf_read32+0x5e2/0x8a0 [xe] >> | Call Trace: >> | xe_mmio_read32+0x110/0x280 [xe] >> | read_residency_counter+0x42/0xd0 [xe] >> | dgfx_pcie_link_residencies_show+0xe7/0x160 [xe] >> | .. [drm] PCIE LINK L0 RESIDENCY counter failed to read, ret -19 >> >> Similarly, there is no point to expose inject_csc_hw_error on VFs, >> as HW errors support is already disabled for VFs. >> >> Signed-off-by: Michal Wajdeczko >> Cc: Soham Purkait >> Cc: Rodrigo Vivi >> Cc: Riana Tauro > > I posted a very similar patch[1] ~1 month ago. oops > > There was a spec-related question from Rodrigo, for which I could not > find the answer. I guess the answer in indirect - there is only small set of registers that VFs can read directly, and above one 0x35b004 is not on this list. Bspec: 53221 > > [1] https://lore.kernel.org/all/20250729-skip-residency-debugfs-for-vfs-v1-1-3c5edec08c8b@intel.com/ > > -- > Gustavo Sousa > >> --- >> drivers/gpu/drm/xe/xe_debugfs.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/gpu/drm/xe/xe_debugfs.c b/drivers/gpu/drm/xe/xe_debugfs.c >> index 4b71570529a6..8be8304cb05c 100644 >> --- a/drivers/gpu/drm/xe/xe_debugfs.c >> +++ b/drivers/gpu/drm/xe/xe_debugfs.c >> @@ -346,7 +346,7 @@ void xe_debugfs_register(struct xe_device *xe) >> ARRAY_SIZE(debugfs_list), >> root, minor); >> >> - if (xe->info.platform == XE_BATTLEMAGE) { >> + if (xe->info.platform == XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) { >> drm_debugfs_create_files(debugfs_residencies, >> ARRAY_SIZE(debugfs_residencies), >> root, minor); >> -- >> 2.47.1 >>