averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-08-24 07:35:46 +02:00
Code Issues Packages Projects Releases Wiki Activity
298,552 Commits 116 Branches 5,734 Tags
ee14186f8d2338227888f3c00a06caf31f94de38
Commit Graph
27 Commits
Author SHA1 Message Date
Ralf Baechle c2ea1d56ea MIPS: Avoid potential hazard on Context register 
set_saved_sp reads Context register. Avoid reading stale value from
earlier incomplete write.

Issue found and fixed for head.S by Chris Dearman <chris@mips.com>.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2009-11-02 12:00:07 +01:00
David Daney 484889fc85 MIPS: Avoid clobbering struct pt_regs in kthreads 
The resume() implementation octeon_switch.S examines the saved cp0_status
register.  We were clobbering the entire pt_regs structure in kernel
threads leading to random crashes.

When switching away from a kernel thread, the saved cp0_status is examined
and if bit 30 is set it is cleared and the CP2 state saved into the pt_regs
structure.  Since the kernel thread stack overlaid the pt_regs structure
this resulted in a corrupt stack.  When the kthread with the corrupt stack
was resumed, it could crash if it used any of the data in the stack that was
clobbered.

We fix it by moving the kernel thread stack down so it doesn't overlay
pt_regs.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2009-08-03 17:52:41 +01:00
Ralf Baechle fd3d2764ee [MIPS] IP27: Fix build errors if CONFIG_MAPPED_KERNEL=y 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2008-10-06 01:22:29 +01:00
Ralf Baechle 234fcd1484 [MIPS] Fix loads of section missmatches 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2008-03-12 14:14:41 +00:00
Ralf Baechle a055917e1b [MIPS] Fix build after b0rked changes to <linux/init.h>. 
Commit 312b1485fb made __INIT_REFOK expand
into .section .section ".ref.text", "ax".  Since the assembler doesn't
tolerate stuttering in the source that broke all MIPS builds.

Since with this change Sam downgraded __INIT_REFOK the best fix is to
get replace it by the modern days operator.  With MIPS the only user
of __INIT_REFOK and __INITDATA_REFOK (which was equally broken) being
unused anyway these can be deleted but that's subject of a separate
commit.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2008-02-01 14:48:43 +00:00
Ralf Baechle ba820c5c51 [MIPS] Fix CONFIG_BOOT_RAW. 
This was broken by 017e3a492683b32d17dcd1b13b279745cc656073 (lmo) /
396a2ae08e (kernel.org).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2008-01-07 15:32:04 +00:00
Thomas Bogendoerfer 15ad838d28 [MIPS] Always do the ARC64_TWIDDLE_PC thing. 
Always jump to the place where the kernel is linked to. This helps where
the bootloaders/proms ignores the start address inside the ELF header.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-10-18 18:11:46 +01:00
Ralf Baechle 396a2ae08e [MIPS] Fix modpost warning in raw binary builds. 
MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x478): Section mismatch: reference to .init.text:start_kernel (between '_stext' and 'run_init_process')

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-10-17 18:28:46 +01:00
Ralf Baechle e001e52801 [MIPS] Replace use of stext with _stext. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-07-31 21:35:28 +01:00
Atsushi Nemoto cdcc9eb5e0 [MIPS] Fix marge error due to conflict in arch/mips/kernel/head.S 
__INIT directive just before kernel_entry was ignored for most platforms.
This patch fixes it and get rid of this warning:

WARNING: vmlinux.o(.text+0x478): Section mismatch: reference to .init.text:start_kernel (between '_stext' and 'run_init_process')

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-07-24 16:02:48 +01:00
Marc St-Jean 9267a30d1d [MIPS] PMC MSP71xx mips common 
Patch to add mips common support for the PMC-Sierra MSP71xx devices.

Signed-off-by: Marc St-Jean <Marc_St-Jean@pmc-sierra.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-07-10 17:33:03 +01:00
Ralf Baechle f6e2373ad6 [MIPS] MIPSsim: Move code away from the other MIPS Inc. BSP code. 
It shares no code at all.  While at it also fix up the beginning bitrot.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-07-10 17:32:56 +01:00
Atsushi Nemoto 69a6c312e5 [MIPS] Move some kernel globals from asm file to C file. 
This get rid of some undesirable hole in BSS section due to random
order of placement.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2007-02-06 16:53:16 +00:00
Ralf Baechle c25c79d80e [MIPS] Qemu now has an ELF loader. 
So nuke kludge for flat binaries.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-12-09 01:04:00 +00:00
Atsushi Nemoto 656be92f9a [MIPS] Load modules to CKSEG0 if CONFIG_BUILD_ELF64=n 
This is a patch to load 64-bit modules to CKSEG0 so that can be
compiled with -msym32 option.  This makes each module ~10% smaller.

* introduce MODULE_START and MODULE_END
* custom module_alloc()
* PGD for modules
* change XTLB refill handler synthesizer
* enable -msym32 for modules again
  (revert ca78b1a5c6a6e70e052d3ea253828e49b5d07c8a)

New XTLB refill handler looks like this:

80000080 dmfc0   k0,C0_BADVADDR
80000084 bltz    k0,800000e4			# goto l_module_alloc
80000088 lui     k1,0x8046			# %high(pgd_current)
8000008c ld      k1,24600(k1)			# %low(pgd_current)
80000090 dsrl    k0,k0,0x1b			# l_vmalloc_done:
80000094 andi    k0,k0,0x1ff8
80000098 daddu   k1,k1,k0
8000009c dmfc0   k0,C0_BADVADDR
800000a0 ld      k1,0(k1)
800000a4 dsrl    k0,k0,0x12
800000a8 andi    k0,k0,0xff8
800000ac daddu   k1,k1,k0
800000b0 dmfc0   k0,C0_XCONTEXT
800000b4 ld      k1,0(k1)
800000b8 andi    k0,k0,0xff0
800000bc daddu   k1,k1,k0
800000c0 ld      k0,0(k1)
800000c4 ld      k1,8(k1)
800000c8 dsrl    k0,k0,0x6
800000cc mtc0    k0,C0_ENTRYLO0
800000d0 dsrl    k1,k1,0x6
800000d4 mtc0    k1,C0_ENTRYL01
800000d8 nop
800000dc tlbwr
800000e0 eret
800000e4 dsll    k1,k0,0x2			# l_module_alloc:
800000e8 bgez    k1,80000008			# goto l_vmalloc
800000ec lui     k1,0xc000
800000f0 dsubu   k0,k0,k1
800000f4 lui     k1,0x8046			# %high(module_pg_dir)
800000f8 beq     zero,zero,80000000
800000fc nop
80000000 beq     zero,zero,80000090		# goto l_vmalloc_done
80000004 daddiu  k1,k1,0x4000
80000008 dsll32  k1,k1,0x0			# l_vmalloc:
8000000c dsubu   k0,k0,k1
80000010 beq     zero,zero,80000090		# goto l_vmalloc_done
80000014 lui     k1,0x8046			# %high(swapper_pg_dir)

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-11-30 01:14:44 +00:00
Ralf Baechle 242954b5aa [MIPS] 16K & 64K page size fixes 
Derived from Peter Watkins <treestem@gmail.com>'s work.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-11-01 17:46:09 +00:00
Ralf Baechle 192ef36619 [MIPS] TRACE_IRQFLAGS_SUPPORT support. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-07-13 21:26:09 +01:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h> 
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
 2006-06-30 19:25:36 +02:00
Ralf Baechle 4277ff5ee5 [MIPS] Fix use of ehb instruction for non-R2 configurations. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-06-29 21:10:49 +01:00
Ralf Baechle 41c594ab65 [MIPS] MT: Improved multithreading support. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2006-04-19 04:14:28 +02:00
Ralf Baechle c78cbf49c4 Support for MIPSsim, the cycle accurate MIPS simulator. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2005-10-29 19:32:30 +01:00
Ralf Baechle 7e35952baa Move Origin crapola into a machine-specific header file. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2005-10-29 19:31:52 +01:00
Ralf Baechle b490ff4270 Temporary hack for Qemu and MIPSsim until they get a proper ELF loader. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2005-10-29 19:31:41 +01:00
Thiemo Seufer 1b3a6e975c Fix 64bit SMP TLB handler and stack frame handling, optimize 32bit SMP 
TLB handlers a bit, match definitions in pgtable-{32,64}.h better.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2005-10-29 19:31:00 +01:00
Thiemo Seufer 0964ce24d0 Move the invalid pmd and pte tables from .data to .bss. Fix alignment. 
Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2005-10-29 19:30:16 +01:00
Ralf Baechle 875d43e72b [PATCH] mips: clean up 32/64-bit configuration 
Start cleaning 32-bit vs. 64-bit configuration.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 2005-09-05 00:06:06 -07:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
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!
 2005-04-16 15:20:36 -07:00