linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2007-03-05	sh: Revert lazy dcache writeback changes.	Paul Mundt	1	-54/+1
	These ended up causing too many problems on older parts, revert for now.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13	sh: Switch to local TLB flush variants in additional callsites.	Paul Mundt	1	-3/+3
	Convert some of the global flush users over to using the local variants that don't need to use the global routines. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13	sh: Local TLB flushing variants for SMP prep.	Paul Mundt	1	-10/+10
	Rename the existing flush routines to local_ variants for use by the IPI-backed global flush routines on SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13	sh: Use a per-cpu ASID cache.	Paul Mundt	1	-10/+16
	Previously this was implemented using a global cache, cache this per-CPU instead and bump up the number of context IDs to match NR_CPUS. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13	sh: Don't set reserved _PAGE_WT bit on SH-3.	Paul Mundt	1	-1/+1
	Only SH-4 needs to set _PAGE_WT when using write-through caching, don't attempt to set it on SH-3 where it ends up being a reserved bit. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13	sh: Lazy dcache writeback optimizations.	Paul Mundt	1	-1/+54
	This converts the lazy dcache handling to the model described in Documentation/cachetlb.txt and drops the ptep_get_and_clear() hacks used for the aliasing dcaches on SH-4 and SH7705 in 32kB mode. As a bonus, this slightly cuts down on the cache flushing frequency. With that and the PTEA handling out of the way, the update_mmu_cache() implementations can be consolidated, and we no longer have to worry about which configuration the cache is in for the SH7705 case. And finally, explicitly disable the lazy writeback on SMP (SH-4A). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27	sh: Initial vsyscall page support.	Paul Mundt	1	-8/+10
	This implements initial support for the vsyscall page on SH. At the moment we leave it configurable due to having nommu to support from the same code base. We hook it up for the signal trampoline return at present, with more to be added later, once uClibc catches up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27	sh: page table alloc cleanups and page fault optimizations.	Paul Mundt	1	-0/+132
	Cleanup of page table allocators, using generic folded PMD and PUD helpers. TLB flushing operations are moved to a more sensible spot. The page fault handler is also optimized slightly, we no longer waste cycles on IRQ disabling for flushing of the page from the ITLB, since we're already under CLI protection by the initial exception handler. Signed-off-by: Paul Mundt <lethal@linux-sh.org>