diff options
| author | Hans de Goede <[email protected]> | 2017-08-30 12:58:11 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-08-31 11:17:27 +0200 |
| commit | 594a30fb12424717a41c62323d2a8bf167dbccad (patch) | |
| tree | 5f053916366799282e3cb3708f6b00337190259f /lib/memory-notifier-error-inject.c | |
| parent | 1d792a678c759b3b06af197c2c250cea13f9c57b (diff) | |
x86/apic: Silence "FW_BUG TSC_DEADLINE disabled due to Errata" on CPUs without the feature
When booting 4.13 on a VirtualBox VM on a Skylake host the following
error shows up in the logs:
[ 0.000000] [Firmware Bug]: TSC_DEADLINE disabled due to Errata;
please update microcode to version: 0xb2 (or later)
This is caused by apic_check_deadline_errata() only checking CPU model
and not the X86_FEATURE_TSC_DEADLINE_TIMER flag (which VirtualBox does
NOT export to the guest), combined with VirtualBox not exporting the
micro-code version to the guest.
This commit adds a check for X86_FEATURE_TSC_DEADLINE_TIMER to
apic_check_deadline_errata(), silencing this error on VirtualBox VMs.
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Cc: Frank Mehnert <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Michael Thayer <[email protected]>
Cc: Michal Necasek <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Fixes: bd9240a18e ("x86/apic: Add TSC_DEADLINE quirk due to errata")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions