[xen stable-4.15] x86/cpuid: Advertise SSB_NO to guests by default

[patchbot@xxxxxxx]

commit 82b2033090150ef25090b7e58d4820e04cedc736
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu Jan 27 21:28:48 2022 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Feb 4 16:26:49 2022 +0000

    x86/cpuid: Advertise SSB_NO to guests by default
    
    This is a statement of hardware behaviour, and not related to controls for 
the
    guest kernel to use.  Pass it straight through from hardware.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    (cherry picked from commit 15b7611efd497c4b65f350483857082cb70fc348)
---
 xen/include/public/arch-x86/cpufeatureset.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
b/xen/include/public/arch-x86/cpufeatureset.h
index 4a1462db65..2ffeff0ae5 100644
--- a/xen/include/public/arch-x86/cpufeatureset.h
+++ b/xen/include/public/arch-x86/cpufeatureset.h
@@ -263,7 +263,7 @@ XEN_CPUFEATURE(IBRS_SAME_MODE, 8*32+19) /*   IBRS provides 
same-mode protection
 XEN_CPUFEATURE(AMD_PPIN,      8*32+23) /*   Protected Processor Inventory 
Number */
 XEN_CPUFEATURE(AMD_SSBD,      8*32+24) /*   MSR_SPEC_CTRL.SSBD available */
 XEN_CPUFEATURE(VIRT_SSBD,     8*32+25) /*   MSR_VIRT_SPEC_CTRL.SSBD */
-XEN_CPUFEATURE(SSB_NO,        8*32+26) /*   Hardware not vulnerable to SSB */
+XEN_CPUFEATURE(SSB_NO,        8*32+26) /*A  Hardware not vulnerable to SSB */
 XEN_CPUFEATURE(PSFD,          8*32+28) /*   MSR_SPEC_CTRL.PSFD */
 
 /* Intel-defined CPU features, CPUID level 0x00000007:0.edx, word 9 */
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.15