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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-10 08:48:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-10 08:48:29 -0800
commit8c8ae4e8cd5a67467192f3361eeec463694f8ed8 (patch)
treec4216f3f8cb89dd6a12e727d886abc0f6ab74c83 /arch/x86/xen
parenta1e8fad5900fa94adb500c6e0dfd60a307f7a3c9 (diff)
parentd9b8ca8474fd4fdd43ba6d97a4fee8b49b978067 (diff)
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Merge branch 'stable/generic' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/generic' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: HVM X2APIC support apic: Move hypervisor detection of x2apic to hypervisor.h
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/enlighten.c31
1 files changed, 12 insertions, 19 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index aa8c89a..6aba2a2 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1256,25 +1256,6 @@ asmlinkage void __init xen_start_kernel(void)
#endif
}
-static uint32_t xen_cpuid_base(void)
-{
- uint32_t base, eax, ebx, ecx, edx;
- char signature[13];
-
- for (base = 0x40000000; base < 0x40010000; base += 0x100) {
- cpuid(base, &eax, &ebx, &ecx, &edx);
- *(uint32_t *)(signature + 0) = ebx;
- *(uint32_t *)(signature + 4) = ecx;
- *(uint32_t *)(signature + 8) = edx;
- signature[12] = 0;
-
- if (!strcmp("XenVMMXenVMM", signature) && ((eax - base) >= 2))
- return base;
- }
-
- return 0;
-}
-
static int init_hvm_pv_info(int *major, int *minor)
{
uint32_t eax, ebx, ecx, edx, pages, msr, base;
@@ -1384,6 +1365,18 @@ static bool __init xen_hvm_platform(void)
return true;
}
+bool xen_hvm_need_lapic(void)
+{
+ if (xen_pv_domain())
+ return false;
+ if (!xen_hvm_domain())
+ return false;
+ if (xen_feature(XENFEAT_hvm_pirqs) && xen_have_vector_callback)
+ return false;
+ return true;
+}
+EXPORT_SYMBOL_GPL(xen_hvm_need_lapic);
+
const __refconst struct hypervisor_x86 x86_hyper_xen_hvm = {
.name = "Xen HVM",
.detect = xen_hvm_platform,