diff options
| author | Sheng Yang <sheng@linux.intel.com> | 2010-12-21 09:18:48 +0300 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-01-07 18:03:49 +0300 |
| commit | 2904ed8dd5a748c52caf4d8b09d3d9834b5932fa (patch) | |
| tree | 93ebbdf8f44fd43519514b348d5e447113628351 | |
| parent | cf7d7e5a1980d1116ee152d25dac382b112b9c17 (diff) | |
| download | linux-2904ed8dd5a748c52caf4d8b09d3d9834b5932fa.tar.xz | |
apic: Move hypervisor detection of x2apic to hypervisor.h
Then we can reuse it for Xen later.
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Avi Kivity <avi@redhat.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | arch/x86/include/asm/hypervisor.h | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 5 |
2 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h index ff2546ce7178..0c6f7af7fda8 100644 --- a/arch/x86/include/asm/hypervisor.h +++ b/arch/x86/include/asm/hypervisor.h @@ -20,6 +20,8 @@ #ifndef _ASM_X86_HYPERVISOR_H #define _ASM_X86_HYPERVISOR_H +#include <asm/kvm_para.h> + extern void init_hypervisor(struct cpuinfo_x86 *c); extern void init_hypervisor_platform(void); @@ -47,4 +49,11 @@ extern const struct hypervisor_x86 x86_hyper_vmware; extern const struct hypervisor_x86 x86_hyper_ms_hyperv; extern const struct hypervisor_x86 x86_hyper_xen_hvm; +static inline bool hypervisor_x2apic_available(void) +{ + if (kvm_para_available()) + return true; + return false; +} + #endif diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 3f838d537392..8408f2d19819 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -50,8 +50,8 @@ #include <asm/mtrr.h> #include <asm/smp.h> #include <asm/mce.h> -#include <asm/kvm_para.h> #include <asm/tsc.h> +#include <asm/hypervisor.h> unsigned int num_processors; @@ -1476,7 +1476,8 @@ void __init enable_IR_x2apic(void) /* IR is required if there is APIC ID > 255 even when running * under KVM */ - if (max_physical_apicid > 255 || !kvm_para_available()) + if (max_physical_apicid > 255 || + !hypervisor_x2apic_available()) goto nox2apic; /* * without IR all CPUs can be addressed by IOAPIC/MSI |