[xen staging] x86/cpuid: Fix APIC bit clearing

[patchbot@xxxxxxx]

commit 64219fa179c3e48adad12bfce3f6b3f1596cccbf
Author:     Fam Zheng <famzheng@xxxxxxxxxx>
AuthorDate: Wed Jul 29 18:51:45 2020 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Jul 29 19:03:41 2020 +0100

    x86/cpuid: Fix APIC bit clearing
    
    The bug is obvious here, other places in this function used
    "cpufeat_mask" correctly.
    
    Fixed: b648feff8ea2 ("xen/x86: Improvements to in-hypervisor cpuid sanity 
checks")
    Signed-off-by: Fam Zheng <famzheng@xxxxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/cpuid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/cpuid.c b/xen/arch/x86/cpuid.c
index 6a4a787b68..63a03ef1e5 100644
--- a/xen/arch/x86/cpuid.c
+++ b/xen/arch/x86/cpuid.c
@@ -1057,7 +1057,7 @@ void guest_cpuid(const struct vcpu *v, uint32_t leaf,
         {
             /* Fast-forward MSR_APIC_BASE.EN. */
             if ( vlapic_hw_disabled(vcpu_vlapic(v)) )
-                res->d &= ~cpufeat_bit(X86_FEATURE_APIC);
+                res->d &= ~cpufeat_mask(X86_FEATURE_APIC);
 
             /*
              * PSE36 is not supported in shadow mode.  This bit should be
--
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