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| author | Jike Song <jike.song@intel.com> | 2016-12-08 04:00:35 +0100 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-12-16 09:55:26 +0100 |
| commit | f440c8a572d7e0002d5c2c8dbd740130ad8ffa5b (patch) | |
| tree | 9511b191afb97fab97f0fd0747b9c7cc214568ae /firmware | |
| parent | drm/i915/gvt/kvmgt: replace kmalloc() by kzalloc() (diff) | |
| download | linux-f440c8a572d7e0002d5c2c8dbd740130ad8ffa5b.tar.xz linux-f440c8a572d7e0002d5c2c8dbd740130ad8ffa5b.zip | |
drm/i915/gvt/kvmgt: read/write GPA via KVM API
Previously to read/write a GPA, we at first try to pin the GFN it belongs
to, then translate the pinned PFN to a kernel HVA, then read/write it.
This is however not necessary. A GFN should be pinned IFF it would be
accessed by peripheral devices (DMA), not by CPU. This patch changes
the read/write method to KVM API, which will leverage userspace HVA
and copy_{from|to}_usr instead.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions