From: Matthew Brost <matthew.brost@intel.com>
To: <Simon.Richter@hogyros.de>
Cc: "Summers, Stuart" <stuart.summers@intel.com>,
<intel-xe@lists.freedesktop.org>,
"Auld, Matthew" <matthew.auld@intel.com>
Subject: Re: [PATCH v5 2/2] drm/xe: Enable 2M pages in xe_migrate_vram
Date: Mon, 13 Oct 2025 10:32:46 -0700 [thread overview]
Message-ID: <aO03vp4Nl3gWlPx7@lstrano-desk.jf.intel.com> (raw)
In-Reply-To: <6aa691b1-1c7b-4534-8698-71cec3952d7b@hogyros.de>
On Tue, Oct 14, 2025 at 02:29:52AM +0900, Simon.Richter@hogyros.de wrote:
> 14 Oct 2025 02:14:44 Matthew Brost <matthew.brost@intel.com>:
>
> > I'm not handling this but I believe CPU pages are at most 64k on ARM,
> > power, or longsoon. I could add an assert I suppose to make sure this
> > unhandled case never occurs.
> Hi,
>
> POWER can also do 256kB, but that is a very uncommon configuration because
> it requires the complete userspace to be rebuilt with 256k segment
> alignment.
>
> For that reason I'd expect even larger pages to be very unlikely.
>
That's still considerably less than 2M so we are good here.
Matt
> Simon
next prev parent reply other threads:[~2025-10-13 17:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-13 3:45 [PATCH v5 0/2] Different page size handle in migrate layer Matthew Brost
2025-10-13 3:45 ` [PATCH v5 1/2] drm/xe: Fix build_pt_update_batch_sram for non-4K PAGE_SIZE Matthew Brost
2025-10-13 16:38 ` [v5,1/2] " Simon Richter
2025-10-13 16:53 ` [PATCH v5 1/2] " Summers, Stuart
2025-10-13 3:45 ` [PATCH v5 2/2] drm/xe: Enable 2M pages in xe_migrate_vram Matthew Brost
2025-10-13 17:08 ` Summers, Stuart
2025-10-13 17:14 ` Matthew Brost
2025-10-13 17:22 ` Summers, Stuart
2025-10-13 17:34 ` Matthew Brost
2025-10-13 18:01 ` Summers, Stuart
2025-10-14 2:17 ` Simon Richter
2025-10-14 3:08 ` Summers, Stuart
2025-10-13 17:29 ` Simon.Richter
2025-10-13 17:32 ` Matthew Brost [this message]
2025-10-13 5:38 ` ✓ CI.KUnit: success for Different page size handle in migrate layer (rev2) Patchwork
2025-10-13 6:23 ` ✓ Xe.CI.BAT: " Patchwork
2025-10-13 6:51 ` ✓ Xe.CI.Full: " Patchwork
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