From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc: Add pgprot_writecombine
Date: Tue, 1 Mar 2011 17:00:47 +1100 [thread overview]
Message-ID: <20110301170047.601c83b7@kryten> (raw)
A number of drivers are using pgprot_writecombine() to enable write
combining on userspace mappings. Implement it on powerpc.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 89f1587..88b0bd9 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -170,6 +170,7 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre
#define pgprot_cached_wthru(prot) (__pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | \
_PAGE_COHERENT | _PAGE_WRITETHRU))
+#define pgprot_writecombine pgprot_noncached_wc
struct file;
extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
next reply other threads:[~2011-03-01 6:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-01 6:00 Anton Blanchard [this message]
2011-03-14 18:33 ` [PATCH] powerpc: Add pgprot_writecombine Nishanth Aravamudan
2011-03-14 18:35 ` Steve Wise
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