kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c, branch linux-4.17.y

drm/amdgpu/pm: Fix potential Spectre v1

2018-08-24T11:07:15Z

commit ddf74e79a54070f277ae520722d3bab7f7a6c67a upstream. idx can be indirectly controlled by user-space, hence leading to a potential exploitation of the Spectre variant 1 vulnerability. This issue was detected with the help of Smatch: drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:408 amdgpu_set_pp_force_state() warn: potential spectre issue 'data.states' Fix this by sanitizing idx before using it to index data.states Notice that given that speculation windows are large, the policy is to kill the speculation on the first load and not worry if it can be completed with a dependent load/store [1]. [1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2 Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Remove wrapper layer of smu ip functions

2018-03-15T14:57:50Z

1. delete amdgpu_powerplay.c used for wrapping smu ip functions 2. delete struct pp_instance, 3. make struct hwmgr as the smu hw handle. Reviewed-by: Alex Deucher Reviewed-by: Evan Quan Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amd/pp: Revert gfx/compute profile switch sysfs

2018-03-06T18:12:38Z

The gfx/compute profiling mode switch is only for internally test. Not a complete solution and unexpectly upstream. so revert it. Reviewed-by: Evan Quan Acked-by: Christian König Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu: Get/set dgpu power cap via hwmon API

2018-02-19T19:19:45Z

v2: change power unit to microWatt Adust power limit through power1_cap Get min/max power limit through power1_cap_min/power1_cap_max Reviewed-by: Alex Deucher Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amd/pp: Delete debug info when set power_profile_mode

2018-02-19T19:19:05Z

Reviewed-by: Alex Deucher Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pm: rework the hwmon visibility settings

2018-02-19T19:18:52Z

Previously we just always exposed everything for asics supported by powerplay. Make it a bit more fine grained. In practice this shouldn't change anything. Acked-by: Christian König Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pp: remove the get_temperature API

2018-02-19T19:18:51Z

This is also supported with the read_sensor API and there were no more users of the get_temperature API. Acked-by: Christian König Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pm: use read_sensor API to get temperature

2018-02-19T19:18:51Z

Rather than using the amdgpu_dpm_get_temperature. Both provide access to the temperature. Acked-by: Christian König Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pm: report gpu average power via hwmon API

2018-02-19T19:18:50Z

Expose power via hwmon. Acked-by: Christian König Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher

drm/amdgpu/pm: report gpu voltages via hwmon API

2018-02-19T19:18:49Z

Expose vddgfx and vddnb via hwmon. Acked-by: Christian König Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher