From: Ira Weiny ira.weiny@intel.com
Move the kmap() build bug to kmap_init() to facilitate patches to lift kmap() to the core.
Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Ira Weiny ira.weiny@intel.com
--- Changes from V1: combine code onto 1 line. --- arch/xtensa/include/asm/highmem.h | 5 ----- arch/xtensa/mm/highmem.c | 4 ++++ 2 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index 413848cc1e56..a9587c85be85 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -68,11 +68,6 @@ void kunmap_high(struct page *page);
static inline void *kmap(struct page *page) { - /* Check if this memory layout is broken because PKMAP overlaps - * page table. - */ - BUILD_BUG_ON(PKMAP_BASE < - TLBTEMP_BASE_1 + TLBTEMP_SIZE); might_sleep(); if (!PageHighMem(page)) return page_address(page); diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c index 184ceadccc1a..da734a2ed641 100644 --- a/arch/xtensa/mm/highmem.c +++ b/arch/xtensa/mm/highmem.c @@ -88,6 +88,10 @@ void __init kmap_init(void) { unsigned long kmap_vstart;
+ /* Check if this memory layout is broken because PKMAP overlaps + * page table. + */ + BUILD_BUG_ON(PKMAP_BASE < TLBTEMP_BASE_1 + TLBTEMP_SIZE); /* cache the first kmap pte */ kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); kmap_pte = kmap_get_fixmap_pte(kmap_vstart);