[Xen-devel] [PATCH 1/2] x86/emul: Replace opencoded extraction of IOPL from eflags

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
---
 xen/arch/x86/x86_emulate/x86_emulate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c 
b/xen/arch/x86/x86_emulate/x86_emulate.c
index 98ba7c5..c4ba79b 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -1157,7 +1157,7 @@ _mode_iopl(
     int cpl = get_cpl(ctxt, ops);
     if ( cpl == -1 )
         return -1;
-    return (cpl <= ((ctxt->regs->_eflags >> 12) & 3));
+    return cpl <= MASK_EXTR(ctxt->regs->_eflags, EFLG_IOPL);
 }
 
 #define mode_ring0() ({                         \
-- 
2.1.4


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