diff options
| author | Alok N Kataria <akataria@vmware.com> | 2013-01-18 03:44:42 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-01-24 16:11:18 +0400 |
| commit | 4cca6ea04d31c22a7d0436949c072b27bde41f86 (patch) | |
| tree | e06036506679d25909bd013d3b51f1485b9f2d2f /arch/x86/kernel/cpu/hypervisor.c | |
| parent | e3f0f36ddf1b2743a0d4ea312996536a9c37e1c7 (diff) | |
| download | linux-4cca6ea04d31c22a7d0436949c072b27bde41f86.tar.xz | |
x86/apic: Allow x2apic without IR on VMware platform
This patch updates x2apic initializaition code to allow x2apic
on VMware platform even without interrupt remapping support.
The hypervisor_x2apic_available hook was added in x2apic
initialization code and used by KVM and XEN, before this.
I have also cleaned up that code to export this hook through the
hypervisor_x86 structure.
Compile tested for KVM and XEN configs, this patch doesn't have
any functional effect on those two platforms.
On VMware platform, verified that x2apic is used in physical
mode on products that support this.
Signed-off-by: Alok N Kataria <akataria@vmware.com>
Reviewed-by: Doug Covelli <dcovelli@vmware.com>
Reviewed-by: Dan Hecht <dhecht@vmware.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Avi Kivity <avi@redhat.com>
Link: http://lkml.kernel.org/r/1358466282.423.60.camel@akataria-dtop.eng.vmware.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/hypervisor.c')
| -rw-r--r-- | arch/x86/kernel/cpu/hypervisor.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c index a8f8fa9769d6..1e7e84a02eba 100644 --- a/arch/x86/kernel/cpu/hypervisor.c +++ b/arch/x86/kernel/cpu/hypervisor.c @@ -79,3 +79,10 @@ void __init init_hypervisor_platform(void) if (x86_hyper->init_platform) x86_hyper->init_platform(); } + +bool __init hypervisor_x2apic_available(void) +{ + return x86_hyper && + x86_hyper->x2apic_available && + x86_hyper->x2apic_available(); +} |