[amd64] Save cr4 to mmu_cr4_features at boot time (Closes: #620284)

svn path=/dists/sid/linux-2.6/; revision=17182

debian/changelog

@@ -2,6 +2,7 @@ linux-2.6 (2.6.38-3) UNRELEASED; urgency=low
 
   [ Ben Hutchings ]
   * [ppc64] Add to linux-tools package architectures (Closes: #620124)
+  * [amd64] Save cr4 to mmu_cr4_features at boot time (Closes: #620284)
 
   [ Aurelien Jarno ]
   * rtlwifi: fix build when PCI is not enabled.

debian/patches/bugfix/x86/Save-cr4-to-mmu_cr4_features-at-boot-time.patch

@@ -0,0 +1,19 @@
+Subject: [PATCH] Save cr4 to mmu_cr4_features at boot time
+Date: Thu, 31 Mar 2011 14:48:44 -0000
+From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
+
+Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
+Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
+---
+diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
+index 5a0484a..0943eb2 100644
+--- a/arch/x86/kernel/setup.c
++++ b/arch/x86/kernel/setup.c
+@@ -891,6 +891,7 @@ void __init setup_arch(char **cmdline_p)
+ 		max_low_pfn = max_pfn;
+ 
+ 	high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
++	mmu_cr4_features = read_cr4();
+ #endif
+ 
+ 	/*

debian/patches/series/3

@@ -1,2 +1,3 @@
 + bugfix/all/rtlwifi-Let-rtlwifi-build-when-PCI-is-not-enabled.patch
 + bugfix/all/rtlwifi-remove-bogus-udelay-calls.patch
++ bugfix/x86/Save-cr4-to-mmu_cr4_features-at-boot-time.patch