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* MIPS: mm: fixed mappings: correct initialisationMarcin Nowakowski2018-04-131-3/+3
| | | | | | | | | | | | | | | | | | | | [ Upstream commit 71eb989ab5a110df8bcbb9609bacde73feacbedd ] fixrange_init operates at PMD-granularity and expects the addresses to be PMD-size aligned, but currently that might not be the case for PKMAP_BASE unless it is defined properly, so ensure a correct alignment is used before passing the address to fixrange_init. fixed mappings: only align the start address that is passed to fixrange_init rather than the value before adding the size, as we may end up with uninitialised upper part of the range. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15948/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* MIPS: Limit fixrange_init() to the FIXMAP regionKevin Cernekee2011-07-251-1/+1
| | | | | | | | | | | | | fixrange_init() allocates page tables for all addresses higher than FIXADDR_TOP. On processors that override the default FIXADDR_TOP address of 0xfffe_0000, this can consume up to 4 pages (1 page per 4MB) for pgd's that are never used. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1980/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Add external declaration of pagetable_init() to pgalloc.hAtsushi Nemoto2007-02-181-0/+1
| | | | | | | | | | This fixes some sparse warnings. pgtable-32.c:15:6: warning: symbol 'pgd_init' was not declared. Should it be static? pgtable-32.c:32:13: warning: symbol 'pagetable_init' was not declared. Should it be static? Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_pageRalf Baechle2006-10-211-3/+4
| | | | | | | | | | | | | | | | The current implementation uses a sequence of a cacheflush and a copy. This is racy in case of a multithreaded debuggee and renders GDB virtually unusable. Aside this fixes a performance hog rendering access to /proc/cmdline very slow and resulting in a enough cache stalls for the 34K AP/SP programming model to make the bare metal code on the non-Linux VPE miss RT deadlines. The main part of this patch was originally written by Ralf Baechle; Atushi Nemoto did the the debugging. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Update MIPS to use the 4-level pagetable code thereby getting rid ofRalf Baechle2005-10-291-1/+3
| | | | | | the compacrapability headers. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Delete duplicate copy of fixrange_init.Ralf Baechle2005-10-291-31/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+97
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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