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(parent: e47107a) | patch
drm/i915/gvt: refine mocs save restore policy
authorWeinan Li <weinan.z.li@intel.com>
Wed, 13 Dec 2017 02:47:01 +0000 (10:47 +0800)
committerZhenyu Wang <zhenyuw@linux.intel.com>
Mon, 18 Dec 2017 08:30:20 +0000 (16:30 +0800)
commitf402f2d6c3c5a5192869ffbdc079b782ef32dd01
treebc4f79518948e8645eb65563c41db73f498a8fd4tree | snapshot
parente47107ad37c3774be9d5bf6fb4625c59e59f632ccommit | diff
drm/i915/gvt: refine mocs save restore policy

Save and restore the mocs regs of one VM in GVT-g burning too much CPU
utilization. Add LRI command scan to monitor the change of mocs registers,
save the state in vreg, and use delta update policy to restore them.
It can obviously reduce the MMIO r/w count, and improve the performance
of context switch.

Signed-off-by: Weinan Li <weinan.z.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drivers/gpu/drm/i915/gvt/cmd_parser.c diff | blob | history
drivers/gpu/drm/i915/gvt/mmio_context.c diff | blob | history
Domain: System / Kernel;