3 Commits

Author	SHA1	Message	Date
Paul Mundt	4a4a9be3eb	sh: Move arch_get_unmapped_area() in to arch/sh/mm/mmap.c. ... Now that arch/sh/mm/mmap.c exists, move arch_get_unmapped_area() there. Follows the ARM change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>	2008-12-22 18:42:49 +09:00
Paul Mundt	10840f034e	sh: Don't factor in PAGE_OFFSET for valid_phys_addr_range() check. ... Signed-off-by: Paul Mundt <lethal@linux-sh.org>	2008-11-13 15:38:02 +09:00
Paul Mundt	185aed7557	sh: Provide a sane valid_phys_addr_range() to prevent TLB reset with PMB. ... With the PMB enabled, only P1SEG and up are covered by the PMB mappings, meaning that situations where out-of-bounds physical addresses are read from will lead to TLB reset after the PMB miss, allowing for use cases like dd if=/dev/mem to reset the TLB. Fix this up to make sure the reference is between __MEMORY_START (phys) and __pa(high_memory). This is coherent across all variants of sh/sh64 with and without MMU, though the PMB bug itself is only applicable to SH-4A parts. Reported-by: Hideo Saito <saito@densan.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>	2008-11-12 12:53:48 +09:00