[Xen-changelog] [xen staging] x86/cpuid: Drop the synthetic X86_FEATURE_XEN_IBPB

[patchbot@xxxxxxx]

commit 17c0293b47b5dc16ae64bbd656acd26fe7d7044b
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu Nov 29 18:16:01 2018 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Dec 5 20:35:07 2018 +0000

    x86/cpuid: Drop the synthetic X86_FEATURE_XEN_IBPB
    
    This appears to be a vestigial remnent of an old version of the
    XSA-254/Spectre series, and has never been used.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/include/asm-x86/cpufeatures.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/xen/include/asm-x86/cpufeatures.h 
b/xen/include/asm-x86/cpufeatures.h
index f2a1fa1eb3..0c0627467e 100644
--- a/xen/include/asm-x86/cpufeatures.h
+++ b/xen/include/asm-x86/cpufeatures.h
@@ -25,7 +25,6 @@ XEN_CPUFEATURE(XEN_SMAP,        (FSCAPINTS+0)*32+11) /* SMAP 
gets used by Xen it
 XEN_CPUFEATURE(LFENCE_DISPATCH, (FSCAPINTS+0)*32+12) /* lfence set as Dispatch 
Serialising */
 XEN_CPUFEATURE(IND_THUNK_LFENCE,(FSCAPINTS+0)*32+13) /* Use IND_THUNK_LFENCE */
 XEN_CPUFEATURE(IND_THUNK_JMP,   (FSCAPINTS+0)*32+14) /* Use IND_THUNK_JMP */
-XEN_CPUFEATURE(XEN_IBPB,        (FSCAPINTS+0)*32+15) /* IBRSB || IBPB */
 XEN_CPUFEATURE(SC_MSR_PV,       (FSCAPINTS+0)*32+16) /* MSR_SPEC_CTRL used by 
Xen for PV */
 XEN_CPUFEATURE(SC_MSR_HVM,      (FSCAPINTS+0)*32+17) /* MSR_SPEC_CTRL used by 
Xen for HVM */
 XEN_CPUFEATURE(SC_RSB_PV,       (FSCAPINTS+0)*32+18) /* RSB overwrite needed 
for PV */
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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