| commit | 1c17f4d615f34a4ecfcf9132d643126b226f5e79 | |
| author | Huang, Ying <ying.huang@intel.com> | |
| Wed, 30 Jan 2008 12:34:04 +0000 (30 13:34 +0100) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Wed, 30 Jan 2008 12:34:04 +0000 (30 13:34 +0100) | ||
| tree | f621a6370b60a48a62b52e49f38d8b8f6f6b3590 | treesnapshot (tar.gz zip) |
| parent | d2e626f45cc450c00f5f98a89b8b4c4ac3c9bf5f | commitdiff |
x86: ioremap_nocache fix
This patch fixes a bug of ioremap_nocache. ioremap_nocache() will call
__ioremap() with flags != 0 to do the real work, which will call
change_page_attr_addr() if phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT).
But some pages between 0 ~ end_pfn_map << PAGE_SHIFT are not mapped by
identity map, this will make change_page_attr_addr failed.
This patch is based on latest x86 git and has been tested on x86_64 platform.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This patch fixes a bug of ioremap_nocache. ioremap_nocache() will call
__ioremap() with flags != 0 to do the real work, which will call
change_page_attr_addr() if phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT).
But some pages between 0 ~ end_pfn_map << PAGE_SHIFT are not mapped by
identity map, this will make change_page_attr_addr failed.
This patch is based on latest x86 git and has been tested on x86_64 platform.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| arch/x86/mm/ioremap_64.c | diffblobblamehistory |