Re: [PATCH 3/5] cpuidle: replace xen access to x86 pm_idle and default_idle

H. Peter Anvin
2011-08-03T22:35:54Z

On 08/03/2011 12:44 PM, Len Brown wrote:
> From: Len Brown <len.brown@intel.com>
>
> When a Xen Dom0 kernel boots on a hypervisor, it gets access
> to the raw-hardware ACPI tables. While it parses the idle tables
> for the hypervisor's beneift, it uses HLT for its own idle.
>
> Rather than have xen scribble on pm_idle and access default_idle,
> have it simply disable_cpuidle() so acpi_idle will not load and
> architecture default HLT will be used.
>
> cc: xen-devel@lists.xensource.com
> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Signed-off-by: Len Brown <len.brown@intel.com>
> ---
> arch/x86/xen/setup.c | 3 ++-
> drivers/cpuidle/cpuidle.c | 4 ++++
> include/linux/cpuidle.h | 2 ++
> 3 files changed, 8 insertions(+), 1 deletions(-)
>

Acked-by: H. Peter Anvin <hpa@linux.intel.com>