* [PATCH] x86/msr-index: Fix MSR_IA32_ARCH_CAPABILITIES bit ordering
@ 2023-06-23 17:30 Daniel Sneddon
0 siblings, 0 replies; only message in thread
From: Daniel Sneddon @ 2023-06-23 17:30 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen,
maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)
Cc: pawan.kumar.gupta, Daniel Sneddon, H. Peter Anvin,
open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)
When the definition of ARCH_CAP_XAPIC_DISABLE was added to
MSR_IA32_ARCH_CAPABILITIES it was incorrectly placed at the bottom of
the list instead of being inserted by bit order. This means
ARCH_CAP_XAPIC_DISABLE and ARCH_CAP_PBRSB_NO are now swapped and any
future additions may look out of place. Move ARCH_CAP_XAPIC_DISABLE to
its correct position.
No functional change.
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
---
arch/x86/include/asm/msr-index.h | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 3aedae61af4fc..76b154e9aebaa 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -151,15 +151,14 @@
* are restricted to targets in
* kernel.
*/
-#define ARCH_CAP_PBRSB_NO BIT(24) /*
- * Not susceptible to Post-Barrier
- * Return Stack Buffer Predictions.
- */
-
#define ARCH_CAP_XAPIC_DISABLE BIT(21) /*
* IA32_XAPIC_DISABLE_STATUS MSR
* supported
*/
+#define ARCH_CAP_PBRSB_NO BIT(24) /*
+ * Not susceptible to Post-Barrier
+ * Return Stack Buffer Predictions.
+ */
#define MSR_IA32_FLUSH_CMD 0x0000010b
#define L1D_FLUSH BIT(0) /*
--
2.25.1
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2023-06-23 17:32 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-06-23 17:30 [PATCH] x86/msr-index: Fix MSR_IA32_ARCH_CAPABILITIES bit ordering Daniel Sneddon
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®