linux/arch/mips/kernel/head.S, branch v3.0.43

MIPS: Avoid potential hazard on Context register

2009-11-02T11:00:07Z

set_saved_sp reads Context register. Avoid reading stale value from earlier incomplete write. Issue found and fixed for head.S by Chris Dearman . Signed-off-by: Chris Dearman Signed-off-by: Ralf Baechle

MIPS: Avoid clobbering struct pt_regs in kthreads

2009-08-03T16:52:41Z

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 Signed-off-by: Ralf Baechle

[MIPS] IP27: Fix build errors if CONFIG_MAPPED_KERNEL=y

2008-10-06T00:22:29Z

Signed-off-by: Ralf Baechle

[MIPS] Fix loads of section missmatches

2008-03-12T14:14:41Z

Signed-off-by: Ralf Baechle

[MIPS] Fix build after b0rked changes to .

2008-02-01T14:48:43Z

Commit 312b1485fb509c9bc32eda28ad29537896658cb8 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

[MIPS] Fix CONFIG_BOOT_RAW.

2008-01-07T15:32:04Z

This was broken by 017e3a492683b32d17dcd1b13b279745cc656073 (lmo) / 396a2ae08e5080b140330645743ab2567f6bc426 (kernel.org). Signed-off-by: Ralf Baechle

[MIPS] Always do the ARC64_TWIDDLE_PC thing.

2007-10-18T17:11:46Z

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 Signed-off-by: Ralf Baechle

[MIPS] Fix modpost warning in raw binary builds.

2007-10-17T17:28:46Z

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

[MIPS] Replace use of stext with _stext.

2007-07-31T20:35:28Z

Signed-off-by: Ralf Baechle

[MIPS] Fix marge error due to conflict in arch/mips/kernel/head.S

2007-07-24T15:02:48Z

__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 Signed-off-by: Ralf Baechle