From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
To: Jani Nikula <jani.nikula@linux.intel.com>,
intel-xe@lists.freedesktop.org
Subject: Re: [PATCH 0/4] drm/xe: Implement device shutdown to make kexec work.
Date: Fri, 6 Sep 2024 11:52:43 +0200 [thread overview]
Message-ID: <3cf1bdff-3abe-41b8-9078-c4fc5607f3e7@linux.intel.com> (raw)
In-Reply-To: <87frqeovgq.fsf@intel.com>
Den 2024-09-05 kl. 19:34, skrev Jani Nikula:
> On Thu, 05 Sep 2024, Maarten Lankhorst <maarten.lankhorst@linux.intel.com> wrote:
>> Testcase:
>> kexec --reuse-cmdline --initrd=initrd.img -f vmlinuz
>>
>> Because we don't shut down xe correctly, we cannot reload xe afterwards.
>> Implement device shutdown by performing a FLR, then we can load the device
>> cleanly again afterwards.
>
> Maybe a silly question, but what's FLR?
Function level reset. It resets all the resources on the device, so display, all gt's etc are all turned off.
It's far faster than resetting each component separately. And it even works if display is the cause off a panic
since no locks are qrequired.
Cheers,
~Maarten
next prev parent reply other threads:[~2024-09-06 9:52 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-05 15:00 [PATCH 0/4] drm/xe: Implement device shutdown to make kexec work Maarten Lankhorst
2024-09-05 15:00 ` [PATCH 1/4] drm/xe: Fix missing conversion to xe_display_pm_runtime_resume Maarten Lankhorst
2024-09-05 16:36 ` Lucas De Marchi
2024-09-06 5:18 ` Govindapillai, Vinod
2024-09-05 15:00 ` [PATCH 2/4] drm/xe: Remove runtime argument from display s/r functions Maarten Lankhorst
2024-09-05 16:44 ` Lucas De Marchi
2024-09-06 9:45 ` Govindapillai, Vinod
2024-09-06 9:25 ` Govindapillai, Vinod
2024-09-05 15:00 ` [PATCH 3/4] drm/xe: Wire up device shutdown handler Maarten Lankhorst
2024-09-05 16:52 ` Lucas De Marchi
2024-09-06 13:37 ` Maarten Lankhorst
2024-09-06 15:43 ` Rodrigo Vivi
2024-09-05 15:00 ` [PATCH 4/4] CI-only: Test if FLR is disabled? Maarten Lankhorst
2024-09-05 15:06 ` ✓ CI.Patch_applied: success for drm/xe: Implement device shutdown to make kexec work Patchwork
2024-09-05 15:06 ` ✗ CI.checkpatch: warning " Patchwork
2024-09-05 15:07 ` ✓ CI.KUnit: success " Patchwork
2024-09-05 15:19 ` ✓ CI.Build: " Patchwork
2024-09-05 15:22 ` ✓ CI.Hooks: " Patchwork
2024-09-05 15:23 ` ✓ CI.checksparse: " Patchwork
2024-09-05 15:59 ` ✗ CI.BAT: failure " Patchwork
2024-09-05 17:34 ` [PATCH 0/4] " Jani Nikula
2024-09-06 9:52 ` Maarten Lankhorst [this message]
2024-09-06 15:53 ` Rodrigo Vivi
2024-09-09 5:42 ` Aravind Iddamsetty
2024-09-07 16:26 ` ✗ CI.FULL: failure for " Patchwork
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