lkml.org 
[lkml]   [2018]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] i8253: Fix PIT shutdown quirk on Hyper-V
Date
pit_shutdown() doesn't work on Hyper-V because of a quirk in the
PIT emulation. This problem exists in all versions of Hyper-V and
had not been noticed previously. When the counter register is set
to zero, the emulated PIT continues to interrupt @18.2 HZ.

So add a test for running on Hyper-V, and use that test to skip
setting the counter register when running on Hyper-V.

This patch replaces a previously proposed patch with a different
approach. This new approach follows comments from Thomas Gleixner.

Michael Kelley (2):
include/linux/hypervisor.h: Add test for running on Hyper-V
i8253: Fix PIT shutdown quirk on Hyper-V

drivers/clocksource/i8253.c | 14 ++++++++++++--
include/linux/hypervisor.h | 11 +++++++++++
2 files changed, 23 insertions(+), 2 deletions(-)

--
1.8.3.1

\
 
 \ /
  Last update: 2018-11-01 18:31    [W:0.063 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site