From 351191ad55c8a1eccaf23e4187c62056229c0779 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 3 Nov 2020 10:27:32 +0100 Subject: io-mapping: Cleanup atomic iomap Switch the atomic iomap implementation over to kmap_local and stick the preempt/pagefault mechanics into the generic code similar to the kmap_atomic variants. Rename the x86 map function in preparation for a non-atomic variant. Signed-off-by: Thomas Gleixner Cc: Linus Torvalds Cc: Christoph Hellwig Cc: Andrew Morton Link: https://lore.kernel.org/r/20201103095858.625310005@linutronix.de --- include/linux/io-mapping.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index 3b0940be72e9..60e7c83e4904 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -69,13 +69,17 @@ io_mapping_map_atomic_wc(struct io_mapping *mapping, BUG_ON(offset >= mapping->size); phys_addr = mapping->base + offset; - return iomap_atomic_pfn_prot(PHYS_PFN(phys_addr), mapping->prot); + preempt_disable(); + pagefault_disable(); + return __iomap_local_pfn_prot(PHYS_PFN(phys_addr), mapping->prot); } static inline void io_mapping_unmap_atomic(void __iomem *vaddr) { - iounmap_atomic(vaddr); + kunmap_local_indexed((void __force *)vaddr); + pagefault_enable(); + preempt_enable(); } static inline void __iomem * -- cgit v1.2.3