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| author | Thomas Gleixner <tglx@linutronix.de> | 2008-02-04 15:48:05 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-04 15:48:05 (GMT) |
| commit | f56d005d30342a45d8af2b75ecccc82200f09600 (patch) | |
| tree | a7abc52afef135bb63af4334295584508eb60803 /arch/x86/mm | |
| parent | 75ab43bfce51085ffd627c470f48ae49ba6e6da3 (diff) | |
| download | linux-f56d005d30342a45d8af2b75ecccc82200f09600.tar.xz | |
x86: no CPA on iounmap
When an ioremap is unmapped, do not change the page attributes. There might
be another mapping of the same physical address. PAT might detect a conflicting
mapping attribute for no good reason. The mapping is removed anyway.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 4e21231..ee6648f 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -240,9 +240,6 @@ void iounmap(volatile void __iomem *addr) return; } - /* Reset the direct mapping. Can block */ - ioremap_change_attr(p->phys_addr, p->size, IOR_MODE_CACHED); - /* Finally remove it */ o = remove_vm_area((void *)addr); BUG_ON(p != o || o == NULL); |