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David Howells 57cf4f78c6 MN10300: Fix flush_icache_range() ... flush_icache_range() is given virtual addresses to describe the region. It deals with these by attempting to translate them through the current set of page tables. This is fine for userspace memory and vmalloc()'d areas as they are governed by page tables. However, since the regions above 0x80000000 aren't translated through the page tables by the MMU, the kernel doesn't bother to set up page tables for them (see paging_init()). This means flush_icache_range() as it stands cannot be used to flush regions of the VM area between 0x80000000 and 0x9fffffff where the kernel resides if the data cache is operating in WriteBack mode. To fix this, make flush_icache_range() first check for addresses in the upper half of VM space and deal with them appropriately, before dealing with any range in the page table mapped area. Ordinarily, this is not a problem, but it has the capacity to make kprobes and kgdb malfunction. It should not affect gdbstub, signal frame setup or module loading as gdb has its own flush functions, and the others take place in the page table mapped area only. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		15 years ago
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Makefile	MN10300: Handle missing sys_cacheflush() when caching disabled	15 years ago
cache-disabled.c	MN10300: Handle missing sys_cacheflush() when caching disabled	15 years ago
cache-flush-mn10300.S	…
cache-mn10300.S	…
cache.c	MN10300: Fix flush_icache_range()	15 years ago
dma-alloc.c	arch/mn10300/mm: eliminate NULL dereference	15 years ago
extable.c	…
fault.c	mn10300: invoke oom-killer from page fault	15 years ago
init.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
misalignment.c	mn10300: add cc clobbers to asm statements	15 years ago
mmu-context.c	MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself	15 years ago
pgtable.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
tlb-mn10300.S	…