Stefan O'Rear 2ab1483852 riscv: Add pte bit to distinguish swap from invalid ... commit e3613bb8af upstream. Previously, invalid PTEs and swap PTEs had the same binary representation, causing errors when attempting to unmap PROT_NONE mappings, including implicit unmap on exit. Typical error: swap_info_get: Bad swap file entry 40000000007a9879 BUG: Bad page map in process a.out pte:3d4c3cc0 pmd:3e521401 Cc: stable@vger.kernel.org Signed-off-by: Stefan O'Rear <sorear2@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-02-20 10:25:46 +01:00
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asm	riscv: Add pte bit to distinguish swap from invalid	2019-02-20 10:25:46 +01:00
uapi/asm	RISC-V: Don't use a global include guard for uapi/asm/syscalls.h	2018-08-20 10:55:24 -07:00