linux-kernel - [tip:x86/mm] x86: Use new cache mode type in include/asm/fb.h

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Date:	Sun, 16 Nov 2014 02:54:47 -0800
From:	tip-bot for Juergen Gross <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, stefan.bader@...onical.com,
	tglx@...utronix.de, jgross@...e.com, mingo@...nel.org,
	hpa@...or.com
Subject: [tip:x86/mm] x86: Use new cache mode type in include/asm/fb.h

Commit-ID:  c27ce0af896b7cc1718995f2b3e66e2892d5081c
Gitweb:     http://git.kernel.org/tip/c27ce0af896b7cc1718995f2b3e66e2892d5081c
Author:     Juergen Gross <jgross@...e.com>
AuthorDate: Mon, 3 Nov 2014 14:01:48 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sun, 16 Nov 2014 11:04:24 +0100

x86: Use new cache mode type in include/asm/fb.h

Instead of directly using cache mode bits in the pte switch to usage of
the new cache mode type.

Based-on-patch-by: Stefan Bader <stefan.bader@...onical.com>
Signed-off-by: Juergen Gross <jgross@...e.com>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Cc: stefan.bader@...onical.com
Cc: xen-devel@...ts.xensource.com
Cc: konrad.wilk@...cle.com
Cc: ville.syrjala@...ux.intel.com
Cc: david.vrabel@...rix.com
Cc: jbeulich@...e.com
Cc: toshi.kani@...com
Cc: plagnioj@...osoft.com
Cc: tomi.valkeinen@...com
Cc: bhelgaas@...gle.com
Link: http://lkml.kernel.org/r/1415019724-4317-3-git-send-email-jgross@suse.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/include/asm/fb.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/fb.h b/arch/x86/include/asm/fb.h
index 2519d06..c3dd5e7 100644
--- a/arch/x86/include/asm/fb.h
+++ b/arch/x86/include/asm/fb.h
@@ -8,8 +8,12 @@
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 				unsigned long off)
 {
+	unsigned long prot;
+
+	prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
 	if (boot_cpu_data.x86 > 3)
-		pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
+		pgprot_val(vma->vm_page_prot) =
+			prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
 }
 
 extern int fb_is_primary_device(struct fb_info *info);
--
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