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x86/msr: Document msr-index.h rule for addition

Message ID 1455611977-14179-1-git-send-email-bp@alien8.de (mailing list archive)
State New, archived
Headers show

Commit Message

Borislav Petkov Feb. 16, 2016, 8:39 a.m. UTC 
From: Borislav Petkov <bp@suse.de>

In order to keep this file's size sensible and not cause too much
unnecessary churn, make the rule explicit - similar to pci_ids.h - that
only MSRs which are used in multiple compilation units, should get added
to it.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: alex.williamson@redhat.com
Cc: gleb@kernel.org
Cc: joro@8bytes.org
Cc: kvm@vger.kernel.org
CC: Paolo Bonzini <pbonzini@redhat.com>
Cc: sherry.hurwitz@amd.com
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: wei@redhat.com
Cc: x86-ml <x86@kernel.org>
---
 arch/x86/include/asm/msr-index.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index b05402ef3b84..984ab75bf621 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -1,7 +1,12 @@ 
 #ifndef _ASM_X86_MSR_INDEX_H
 #define _ASM_X86_MSR_INDEX_H
 
-/* CPU model specific register (MSR) numbers */
+/*
+ * CPU model specific register (MSR) numbers.
+ *
+ * Do not add new entries to this file unless the definitions are shared
+ * between multiple compilation units.
+ */
 
 /* x86-64 specific MSRs */
 #define MSR_EFER		0xc0000080 /* extended feature register */