| commit | ca3ba2a2f4a49a308e7d78c784d51b2332064f15 | |
| author | Jason Wang <jasowang@redhat.com> | |
| Fri, 28 Feb 2014 03:30:29 +0000 (28 11:30 +0800) | ||
| committer | H. Peter Anvin <hpa@linux.intel.com> | |
| Thu, 27 Mar 2014 18:02:45 +0000 (27 11:02 -0700) | ||
| tree | 5c6610e42b642b8a21c03e2c7db5af1871fcca5c | treesnapshot (tar.gz zip) |
| parent | b098d6726bbfb94c06d6e1097466187afddae61f | commitdiff |
x86, hyperv: Bypass the timer_irq_works() check
This patch bypass the timer_irq_works() check for hyperv guest since:
- It was guaranteed to work.
- timer_irq_works() may fail sometime due to the lpj calibration were inaccurate
in a hyperv guest or a buggy host.
In the future, we should get the tsc frequency from hypervisor and use preset
lpj instead.
[ hpa: I would prefer to not defer things to "the future" in the future... ]
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: <stable@vger.kernel.org>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: http://lkml.kernel.org/r/1393558229-14755-1-git-send-email-jasowang@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This patch bypass the timer_irq_works() check for hyperv guest since:
- It was guaranteed to work.
- timer_irq_works() may fail sometime due to the lpj calibration were inaccurate
in a hyperv guest or a buggy host.
In the future, we should get the tsc frequency from hypervisor and use preset
lpj instead.
[ hpa: I would prefer to not defer things to "the future" in the future... ]
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: <stable@vger.kernel.org>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: http://lkml.kernel.org/r/1393558229-14755-1-git-send-email-jasowang@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| arch/x86/kernel/cpu/mshyperv.c | diffblobblamehistory |