From: Ashutosh Dixit <ashutosh.dixit@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 0/1] drm/i915: Start disabling pread/pwrite ioctl's for future platforms
Date: Fri, 22 Jan 2021 14:40:25 -0800 [thread overview]
Message-ID: <cover.1611354210.git.ashutosh.dixit@intel.com> (raw)
The guidance for i915 at this time is to start phasing out pread/pwrite
ioctl's, the rationale being (a) the functionality can be done entirely in
userspace with a combination of mmap + memcpy, and (b) no existing user
mode clients actually use the pread/pwrite interface.
In this patch we disable these ioctls for dGfx platforms with the
expectation that this will be done for all future platforms (both discrete
and integrated). IGT changes which handle this kernel change have also been
submitted [1].
[1] https://patchwork.freedesktop.org/series/81384/
Test-with: 20210121083742.46592-1-ashutosh.dixit@intel.com
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Ashutosh Dixit (1):
drm/i915: Start disabling pread/pwrite ioctl's for future platforms
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_gem.c | 6 ++++++
drivers/gpu/drm/i915/i915_pci.c | 3 ++-
drivers/gpu/drm/i915/intel_device_info.h | 1 +
4 files changed, 10 insertions(+), 1 deletion(-)
--
2.29.2
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next reply other threads:[~2021-01-22 22:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 22:40 Ashutosh Dixit [this message]
2021-01-22 22:40 ` [Intel-gfx] [PATCH 1/1] drm/i915: Start disabling pread/pwrite ioctl's for future platforms Ashutosh Dixit
2021-03-10 21:37 ` Jason Ekstrand
2021-01-23 2:36 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork
2021-01-23 13:05 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-01-24 23:54 ` Dixit, Ashutosh
2021-01-25 2:36 ` Vudum, Lakshminarayana
2021-01-25 2:35 ` [Intel-gfx] ✓ Fi.CI.IGT: success " Patchwork
2021-03-11 20:20 ` [Intel-gfx] [PATCH 0/1]drm/i915: Disable pread/pwrite ioctl's for future platforms (v2) Jason Ekstrand
2021-03-11 20:20 ` [Intel-gfx] [PATCH 1/1] drm/i915: " Jason Ekstrand
2021-03-12 3:28 ` Dixit, Ashutosh
2021-03-12 11:37 ` Maarten Lankhorst
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