From: Matthew Auld <matthew.auld@intel.com>
To: "Zbigniew Kempczyński" <zbigniew.kempczynski@intel.com>,
igt-dev@lists.freedesktop.org
Subject: Re: [PATCH i-g-t] tests/xe_pat: Add subtests for validating cached pagetables
Date: Wed, 25 Mar 2026 17:37:41 +0000 [thread overview]
Message-ID: <cbbe4e8d-ca07-4afa-91ae-588da41f9f00@intel.com> (raw)
In-Reply-To: <20260317193756.1266825-2-zbigniew.kempczynski@intel.com>
On 17/03/2026 19:37, Zbigniew Kempczyński wrote:
> For platforms where pagetables might be cached (WB and 2-way coherency)
> verify there're no pagefaults when walker goes over partially valid
> cachelines.
>
> Introduced subtests utilize pagetables on different levels with different
> offset selection strategies - sequential and randomized. Sequential
> binds two PTEs per same cacheline whereas randomized distributes binds
> "equally" (with the respect of level set size). Additionally PAT+PTE
> subtest rebinds on same PTE replacing normal bind to NULL and vice-versa
> validating pagetable walk uses updated entries and objects underneath
> contain expected data.
>
> Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
> Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
prev parent reply other threads:[~2026-03-25 17:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-17 19:37 [PATCH i-g-t] tests/xe_pat: Add subtests for validating cached pagetables Zbigniew Kempczyński
2026-03-18 2:28 ` ✓ Xe.CI.BAT: success for " Patchwork
2026-03-18 2:42 ` ✓ i915.CI.BAT: " Patchwork
2026-03-19 6:39 ` ✗ i915.CI.Full: failure " Patchwork
2026-03-19 15:33 ` ✗ Xe.CI.FULL: " Patchwork
2026-03-25 17:37 ` Matthew Auld [this message]
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