- 27 9月, 2005 2 次提交
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由 David S. Miller 提交于
In order to do it correctly on UltraSPARC-III+ and later we'd need to add some complicated code to set the TAG access extension register before loading the TLB. Since this optimization gives questionable gains, it's best to just remove it for now instead of adding the fix for Ultra-III+ Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
It tries to batch up the tag loads and comparisons, and then the stores. And this is just complicated instead of efficient. Also, make the symbol of the Cheetah version more grepable. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 9月, 2005 2 次提交
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由 David S. Miller 提交于
At boot time, determine the D-cache, I-cache and E-cache size and line-size. Use them in cache flushes when appropriate. This change was motivated by discovering that the D-cache on UltraSparc-IIIi and later are 64K not 32K, and the flushes done by the Cheetah error handlers were assuming a 32K size. There are still some pieces of code that are hard coding things and will need to be fixed up at some point. While we're here, fix the D-cache and I-cache parity error handlers to run with interrupts disabled, and when the trap occurs at trap level > 1 log the event via a counter displayed in /proc/cpuinfo. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
The trick is that we do the kernel linear mapping TLB miss starting with an instruction sequence like this: ba,pt %xcc, kvmap_load xor %g2, %g4, %g5 succeeded by an instruction sequence which performs a full page table walk starting at swapper_pg_dir. We first take over the trap table from the firmware. Then, using this constant PTE generation for the linear mapping area above, we build the kernel page tables for the linear mapping. After this is setup, we patch that branch above into a "nop", which will cause TLB misses to fall through to the full page table walk. With this, the page unmapping for CONFIG_DEBUG_PAGEALLOC is trivial. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 9月, 2005 1 次提交
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由 David S. Miller 提交于
"1" needs to be "1UL", this is a 64-bit mask we're creating. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 24 9月, 2005 2 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
'highest_paddr' is set, but never actually used. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 9月, 2005 3 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Instead of all of this cpu-specific code to remap the kernel to the correct location, use portable firmware calls to do this instead. What we do now is the following in position independant assembler: chosen_node = prom_finddevice("/chosen"); prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu"); vaddr = 4MB_ALIGN(current_text_addr()); prom_translate(vaddr, &paddr_high, &paddr_low, &mode); prom_boot_mapping_mode = mode; prom_boot_mapping_phys_high = paddr_high; prom_boot_mapping_phys_low = paddr_low; prom_map(-1, 8 * 1024 * 1024, KERNBASE, paddr_low); and that replaces the massive amount of by-hand TLB probing and programming we used to do here. The new code should also handle properly the case where the kernel is mapped at the correct address already (think: future kexec support). Consequently, the bulk of remap_kernel() dies as does the entirety of arch/sparc64/prom/map.S We try to share some strings in the PROM library with the ones used at bootup, and while we're here mark input strings to oplib.h routines with "const" when appropriate. There are many more simplifications now possible. For one thing, we can consolidate the two copies we now have of a lot of cpu setup code sitting in head.S and trampoline.S. This is a significant step towards CONFIG_DEBUG_PAGEALLOC support. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Testing shows that the prom_unmap() calls do absolutely nothing. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 22 9月, 2005 30 次提交
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由 David S. Miller 提交于
Because we don't access the PAGE_OFFSET linear mappings any longer before we take over the trap table from the firmware, we don't need to load dummy mappings there into the TLB and we don't need the bootmap_base hack any longer either. While we are here, check for a larger than 8MB kernel and halt the boot with an error message. We know that doesn't work, so instead of failing mysteriously we should let the user know exactly what's wrong. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Just allocate them physically starting from the end of the kernel image. This incredibly simplifies our MM bootstrap in that we don't need any mappings in the linear PAGE_OFFSET area working in order to bootstrap ourselves and take over the trap table from the firmware. Many further simplifications are possible now, and this also sets the stage for CONFIG_DEBUG_PAGEALLOC support. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
This thing was just a huge monolithic mess, so chop it up. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Use __initdata instead. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
This was kind of ugly, and actually buggy. The bug was that we didn't handle a machine with memory starting > 4GB. If the 'prompmd' was allocated in physical memory > 4GB we'd croak because the obp_iaddr_patch and obp_daddr_patch things only supported a 32-bit physical address. So fix this by just loading the appropriate values from two variables in the kernel image, which is locked into the TLB and thus accesses to them can't cause a recursive TLB miss. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
This is just a replica of the existing _PAGE_SZBITS, and thus unnecessary. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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The header declaring this function wasn't included, so the function declaration was totally bogus wrt. the proto - even if this wasn't going to fail at all. It was so bad that the compile warning I got was "control reaches end of non-void function", i.e. missing return. Actually, this has been there for ages, the consolidation patch just added the warning which was needed to clean it up. Nice. Really. Cc: Allan Graves <allan.graves@gmail.com> Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Explain why the casting we do to silence this warning is indeed safe. It is because the field we're casting from, though being 64-bit wide, was filled with a pointer in first place by ourselves. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Readd this header (deleted in 60d339f6). A warning is spit out here about undeclared getpgrp(). Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Even if with a bit of misunderstanding, Al fixed this in commit 95608261. Well, the symbol was intended to come from userspace (it exists there on normal host), but since some hosts may miss that, using the kernel one is just as fine. However, rename it to be named consistently with the rest. Actually, he missed converting ELFCLASS32 to coming from kernel headers. For consistence, add ELFCLASS64 too. Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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gcc is now complaining during link on some hosts - fix it as for other things. Reported by Antoine Martin <antoine@nagafix.co.uk>. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Translate uname output taken from the host if needed. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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I am a lamer :-(. Luckily, Luo Xin performed LTP testing and found this failure. Btw, the fact that the patch in which I introduced this was merged shows that: a) I'm really trusted by people b) sometimes they're wrong about point a). c) lack of time for reviewers. CC: Luo Xin <luothing@sina.com> Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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When removing verify_area, verify_area_{tt,skas} were forgotten. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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As recently done by Russell King for ARM, commit 4732efbe introduces a generic asm/futex.h copied along most arches, which includes a "-ENOSYS support" to be changed if needed. However, it includes an unused var (taken from the "real" version) which GCC warns about. Remove it from all arches having that file version (i.e. same GIT id). $ git-diff-tree -r HEAD and $ git-ls-tree -r HEAD include/|grep 9feff4ce1424bc390608326240be369eb13aa648 may be more interesting than looking at the patch itself, to make sure I've just copied the arm header to all other archs having the original dummy version of this file. Cc: Jakub Jelinek <jakub@redhat.com> Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Follow up to 4732efbe - uml must just reuse as-is the backing architecture support. There is a micro-fixup is needed for the included file, which won't affect i386 behaviour at all. I've not tested compilation on x86_64, only on x86, but the code is almost the same except the culprit test, so everything should be ok on x86_64 too. Cc: Jakub Jelinek <jakub@redhat.com> Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
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由 Catalin Marinas 提交于
Patch from Catalin Marinas This patch prevents the "noreturn function does return" warning in the __bug() function in arch/arm/kernel/traps.c Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Linus Torvalds 提交于
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由 Hal Rosenstock 提交于
Based on simplification idea from Sean Hefty <sean.hefty@intel.com> Signed-off-by: NHal Rosenstock <halr@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Sean Hefty 提交于
Clean up code by using enums instead of hard-coded magic numbers. Signed-off-by: NSean Hefty <sean.hefty@intel.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Stephane Kardas 提交于
During a forensic analysis on the fat file system, I found than the result for the last access date on this file system was different between the stat command and the istat command (package tct-utils). The istat command display a true date (the right windows date) but the stat primitive (so stat, find, ls command) displays a wrong date. Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Randy Dunlap 提交于
Correct URL for HPET spec. Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric Dumazet 提交于
Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Stephen Hemminger 提交于
Add MAINTAINER record for Andrew ;-) Signed-off-by: NStephen Hemminger <shemminger@osdl.org> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Hellwig 提交于
__FUNCTION__ is the prefered kernel idiom, __func__ is not supported by gcc 2.95 (we actually map __FUNCTION__ to __func__ for more recent compilers, but it should never be used directly) Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Hugh made me note this line for permission checking in mprotect(): if ((newflags & ~(newflags >> 4)) & 0xf) { after figuring out what's that about, I decided it's nasty enough. Btw Hugh itself didn't like the 0xf. We can safely change it to VM_READ|VM_WRITE|VM_EXEC because we never change VM_SHARED, so no need to check that. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Update comment for the 2.6.6-rc1 conversion from page->list and address_space->{clean,dirty,locked}_pages to radix tree tagging and ->lru. I've mostly avoided to mention page lists (at least I've shortened the comment). Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: NHugh Dickins <hugh@veritas.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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We have no options which the user can set in the Makefile. Only the EXTRAVERSION, which is also useful in place of the "backup modules" suggestion. We don't have configuration options in the top Makefile. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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