From: Marc Rittinghaus <marc.rittinghaus@unikraft.io>
Date: Thu, 27 Apr 2023 10:38:16 +0000 (+0200)
Subject: plat/common/x86: Add PAT MSR
X-Git-Tag: RELEASE-0.13.0~125
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=814aee85f937d5522ddfc25bc42248c9ab3a7008;p=unikraft%2Funikraft.git

plat/common/x86: Add PAT MSR

This commit adds the definition of the page attribute table (PAT)
configuration MSR.

Signed-off-by: Marc Rittinghaus <marc.rittinghaus@unikraft.io>
Reviewed-by: Marc Rittinghaus <marc.rittinghaus@unikraft.io>
Approved-by: Alexander Jung <alex@unikraft.io>
Tested-by: Unikraft CI <monkey@unikraft.io>
GitHub-Closes: #788
---

diff --git a/plat/common/include/x86/cpu_defs.h b/plat/common/include/x86/cpu_defs.h
index 4f42ccec9..a08e81fa9 100644
--- a/plat/common/include/x86/cpu_defs.h
+++ b/plat/common/include/x86/cpu_defs.h
@@ -99,6 +99,8 @@
 #define X86_MSR_CSTAR		0xc0000083
 /* EFLAGS mask for syscall */
 #define X86_MSR_SYSCALL_MASK	0xc0000084
+/* page attribute table configuration */
+#define X86_MSR_PAT		0x277
 
 /* MSR EFER bits */
 #define X86_EFER_SCE		(1 << 0)