[Xen-devel] [PATCH v4 1/2] x86/Intel: Expose cpuid_faulting_enabled so it can be used elsewhere

[Kyle Huey <me@xxxxxxxxxxxx>]

While we're here, use bool instead of bool_t.

Signed-off-by: Kyle Huey <khuey@xxxxxxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/arch/x86/cpu/intel.c    | 9 +++++----
 xen/include/asm-x86/cpuid.h | 3 +++
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/cpu/intel.c b/xen/arch/x86/cpu/intel.c
index 7b60aaa..2e11662 100644
--- a/xen/arch/x86/cpu/intel.c
+++ b/xen/arch/x86/cpu/intel.c
@@ -13,34 +13,35 @@
 #include <mach_apic.h>
 #include <asm/hvm/support.h>
 #include <asm/setup.h>
 
 #include "cpu.h"
 
 #define select_idle_routine(x) ((void)0)
 
-static bool_t __init probe_intel_cpuid_faulting(void)
+static bool __init probe_intel_cpuid_faulting(void)
 {
        uint64_t x;
 
        if (rdmsr_safe(MSR_INTEL_PLATFORM_INFO, x) ||
            !(x & MSR_PLATFORM_INFO_CPUID_FAULTING))
                return 0;
 
        expected_levelling_cap |= LCAP_faulting;
        levelling_caps |=  LCAP_faulting;
        __set_bit(X86_FEATURE_CPUID_FAULTING, boot_cpu_data.x86_capability);
        return 1;
 }
 
-static void set_cpuid_faulting(bool_t enable)
+DEFINE_PER_CPU(bool, cpuid_faulting_enabled);
+
+static void set_cpuid_faulting(bool enable)
 {
-       static DEFINE_PER_CPU(bool_t, cpuid_faulting_enabled);
-       bool_t *this_enabled = &this_cpu(cpuid_faulting_enabled);
+       bool *this_enabled = &this_cpu(cpuid_faulting_enabled);
        uint32_t hi, lo;
 
        ASSERT(cpu_has_cpuid_faulting);
 
        if (*this_enabled == enable)
                return;
 
        rdmsr(MSR_INTEL_MISC_FEATURES_ENABLES, lo, hi);
diff --git a/xen/include/asm-x86/cpuid.h b/xen/include/asm-x86/cpuid.h
index 8e3f639..2372474 100644
--- a/xen/include/asm-x86/cpuid.h
+++ b/xen/include/asm-x86/cpuid.h
@@ -59,16 +59,19 @@ struct cpuidmasks
 };
 
 /* Per CPU shadows of masking MSR values, for lazy context switching. */
 DECLARE_PER_CPU(struct cpuidmasks, cpuidmasks);
 
 /* Default masking MSR values, calculated at boot. */
 extern struct cpuidmasks cpuidmask_defaults;
 
+/* Whether or not cpuid faulting is available for the current domain. */
+DECLARE_PER_CPU(bool, cpuid_faulting_enabled);
+
 #endif /* __ASSEMBLY__ */
 #endif /* !__X86_CPUID_H__ */
 
 /*
  * Local variables:
  * mode: C
  * c-file-style: "BSD"
  * c-basic-offset: 4

base-commit: 20295ab63ce7f57edca9c450602ac2dace1fc721
-- 
2.10.1


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