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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-15 09:19:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-15 09:19:38 -0700 |
| commit | 227423904c709a8e60245c97081bbeb4fb500655 (patch) | |
| tree | 97db1b8df1e4518334aea2fdf60363e0a691eb1e /arch/x86/mm/ioremap.c | |
| parent | 1aaf2e59135fd67321f47c11c64a54aac27014e9 (diff) | |
| parent | fa526d0d641b5365676a1fb821ce359e217c9b85 (diff) | |
| download | linux-227423904c709a8e60245c97081bbeb4fb500655.tar.bz2 | |
Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, pat: Fix cacheflush address in change_page_attr_set_clr()
mm: remove !NUMA condition from PAGEFLAGS_EXTENDED condition set
x86: Fix earlyprintk=dbgp for machines without NX
x86, pat: Sanity check remap_pfn_range for RAM region
x86, pat: Lookup the protection from memtype list on vm_insert_pfn()
x86, pat: Add lookup_memtype to get the current memtype of a paddr
x86, pat: Use page flags to track memtypes of RAM pages
x86, pat: Generalize the use of page flag PG_uncached
x86, pat: Add rbtree to do quick lookup in memtype tracking
x86, pat: Add PAT reserve free to io_mapping* APIs
x86, pat: New i/f for driver to request memtype for IO regions
x86, pat: ioremap to follow same PAT restrictions as other PAT users
x86, pat: Keep identity maps consistent with mmaps even when pat_disabled
x86, mtrr: make mtrr_aps_delayed_init static bool
x86, pat/mtrr: Rendezvous all the cpus for MTRR/PAT init
generic-ipi: Allow cpus not yet online to call smp_call_function with irqs disabled
x86: Fix an incorrect argument of reserve_bootmem()
x86: Fix system crash when loading with "reservetop" parameter
Diffstat (limited to 'arch/x86/mm/ioremap.c')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 04e1ad60c63a..334e63ca7b2b 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -158,24 +158,14 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr, retval = reserve_memtype(phys_addr, (u64)phys_addr + size, prot_val, &new_prot_val); if (retval) { - pr_debug("Warning: reserve_memtype returned %d\n", retval); + printk(KERN_ERR "ioremap reserve_memtype failed %d\n", retval); return NULL; } if (prot_val != new_prot_val) { - /* - * Do not fallback to certain memory types with certain - * requested type: - * - request is uc-, return cannot be write-back - * - request is uc-, return cannot be write-combine - * - request is write-combine, return cannot be write-back - */ - if ((prot_val == _PAGE_CACHE_UC_MINUS && - (new_prot_val == _PAGE_CACHE_WB || - new_prot_val == _PAGE_CACHE_WC)) || - (prot_val == _PAGE_CACHE_WC && - new_prot_val == _PAGE_CACHE_WB)) { - pr_debug( + if (!is_new_memtype_allowed(phys_addr, size, + prot_val, new_prot_val)) { + printk(KERN_ERR "ioremap error for 0x%llx-0x%llx, requested 0x%lx, got 0x%lx\n", (unsigned long long)phys_addr, (unsigned long long)(phys_addr + size), |