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| author | Dominik Brodowski <[email protected]> | 2017-06-07 09:58:19 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-06-08 08:03:05 +0000 |
| commit | 5b0bc9ac2ce4881ee318a21f31140584ce4dbdad (patch) | |
| tree | bb99551d3d91384aba41de14e3c42c60200289d1 /drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | |
| parent | x86/cpu/cyrix: Add alternative Device ID of Geode GX1 SoC (diff) | |
| download | kernel-5b0bc9ac2ce4881ee318a21f31140584ce4dbdad.tar.gz kernel-5b0bc9ac2ce4881ee318a21f31140584ce4dbdad.zip | |
x86/microcode/intel: Clear patch pointer before jettisoning the initrd
During early boot, load_ucode_intel_ap() uses __load_ucode_intel()
to obtain a pointer to the relevant microcode patch (embedded in the
initrd), and stores this value in 'intel_ucode_patch' to speed up the
microcode patch application for subsequent CPUs.
On resuming from suspend-to-RAM, however, load_ucode_ap() calls
load_ucode_intel_ap() for each non-boot-CPU. By then the initramfs is
long gone so the pointer stored in 'intel_ucode_patch' no longer points to
a valid microcode patch.
Clear that pointer so that we effectively fall back to the CPU hotplug
notifier callbacks to update the microcode.
Signed-off-by: Dominik Brodowski <[email protected]>
[ Edit and massage commit message. ]
Signed-off-by: Borislav Petkov <[email protected]>
Cc: <[email protected]> # 4.10..
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c')
0 files changed, 0 insertions, 0 deletions