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This series was created due to subject line change by mistake. Will Resend the version in original series. Thanks, Varun On 28-Jan-26 2:41 PM, Varun Gupta wrote: > Xe3p hardware prefetches memory ranges and notifies software via an > additional bit (bit 11) in the page fault descriptor that the fault > was caused by prefetch. > > Patch 1 adds a dedicated stats counter to track invalid prefetch > pagefaults separately from regular faults. > > Patch 2 implements the prefetch support by extracting the prefetch bit > from the fault descriptor and echoing it in the response (bit 6) only > when handling fails. This prevents CAT errors for prefetch faults. > Stats are incremented for prefetch errors without verbose logging to > avoid log spam. The prefetch bit value is included in error messages > to distinguish prefetch faults from regular faults. > > Based on original patches by Brian Welty and Priyanka Dandamudi. > > v3: > - Split stats counter into separate patch (Matt Brost) > - Drop xe_guc_pagefault_types.h rename patch (Matt Brost) > - Move prefetch check to caller of xe_pagefault_print (Matt Brost) > - Rename XE3P_PFD_PREFETCH/PFR_PREFETCH to remove XE3P_ prefix, > add comments about Xe3+ platform support (Matt Brost) > - Rename PREFETCH_PAGEFAULT_COUNT to INVALID_PREFETCH_PAGEFAULT_COUNT > for clarity (Matt Brost) > - Include prefetch bit value in error message (Matt Brost) > > v2: > - Initial implementation combining all changes > > Varun Gupta (2): > drm/xe: Add counter for invalid prefetch pagefaults > drm/xe: Add prefetch fault support for Xe3p > > drivers/gpu/drm/xe/xe_gt_stats.c | 1 + > drivers/gpu/drm/xe/xe_gt_stats_types.h | 1 + > drivers/gpu/drm/xe/xe_guc_fwif.h | 5 +++-- > drivers/gpu/drm/xe/xe_guc_pagefault.c | 2 ++ > drivers/gpu/drm/xe/xe_pagefault.c | 16 +++++++++++++--- > drivers/gpu/drm/xe/xe_pagefault_types.h | 8 +++++++- > 6 files changed, 27 insertions(+), 6 deletions(-) >