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[PATCH] xen/cpu-policy: Add an IBRS -> AUTO_IBRS dependency
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 31 May 2023 16:30:28 +0100
- Authentication-results: esa6.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>
- Delivery-date: Wed, 31 May 2023 15:31:29 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
AUTO_IBRS is an extention over regular (AMD) IBRS, and needs hiding if IBRS is
levelled out for any reason.
Fixes: defaf651631a ("x86/hvm: Expose Automatic IBRS to guests")
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Wei Liu <wl@xxxxxxx>
CC: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>
This was an oversight of mine when reviewing the aformentioned patch.
---
xen/tools/gen-cpuid.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
index f28ff708a2fc..973fcc1c64e8 100755
--- a/xen/tools/gen-cpuid.py
+++ b/xen/tools/gen-cpuid.py
@@ -319,7 +319,7 @@ def crunch_numbers(state):
# as dependent features simplifies Xen's logic, and prevents the guest
# from seeing implausible configurations.
IBRSB: [STIBP, SSBD, INTEL_PSFD],
- IBRS: [AMD_STIBP, AMD_SSBD, PSFD,
+ IBRS: [AMD_STIBP, AMD_SSBD, PSFD, AUTO_IBRS,
IBRS_ALWAYS, IBRS_FAST, IBRS_SAME_MODE],
AMD_STIBP: [STIBP_ALWAYS],
base-commit: 465217b0f872602b4084a1b0fa2ef75377cb3589
--
2.30.2
|
