talos-op-linux/arch/arm/kernel/machine_kexec.c, branch v3.9

ARM: 7555/1: kexec: fix segment memory addresses check

2012-10-18T10:05:19+00:00

Commit c564df4db85aac8d1d65a56176a0a25f46138064 (ARM: 7540/1: kexec: Check segment memory addresses) added a safety check with accidentally reversed condition, and broke kexec functionality on ARM. Fix this. Acked-by: Will Deacon Signed-off-by: Aaro Koskinen Signed-off-by: Russell King

ARM: 7540/1: kexec: Check segment memory addresses

2012-09-26T21:58:39+00:00

Ensure that the memory regions that are set within the segments correspond to physical contiguous memory regions. Reviewed-by: Simon Horman Reviewed-by: Will Deacon Signed-off-by: Matthew Leach Signed-off-by: Will Deacon Signed-off-by: Russell King

ARM: 7539/1: kexec: scan for dtb magic in segments

2012-09-26T21:58:36+00:00

This patch allows a dtb to be passed to a new kernel using the kexec mechinism. When loading segments from userspace, scan each segment's first four bytes for the dtb magic. If this is found set the kexec_boot_atags parameter to the relocate_kernel code to the phyical address of this segment. Reviewed-by: Simon Horman Reviewed-by: Will Deacon Signed-off-by: Matthew Leach Signed-off-by: Will Deacon Signed-off-by: Russell King

Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm

2012-03-29T23:53:48+00:00

Pull more ARM updates from Russell King. This got a fair number of conflicts with the split, but also with some other sparse-irq and header file include cleanups. They all looked pretty trivial, though. * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits) ARM: fix Kconfig warning for HAVE_BPF_JIT ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds ARM: 7349/1: integrator: convert to sparse irqs ARM: 7259/3: net: JIT compiler for packet filters ARM: 7334/1: add jump label support ARM: 7333/2: jump label: detect %c support for ARM ARM: 7338/1: add support for early console output via semihosting ARM: use set_current_blocked() and block_sigmask() ARM: exec: remove redundant set_fs(USER_DS) ARM: 7332/1: extract out code patch function from kprobes ARM: 7331/1: extract out insn generation code from ftrace ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format ARM: 7351/1: ftrace: remove useless memory checks ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path ARM: Versatile Express: add NO_IOPORT ARM: get rid of asm/irq.h in asm/prom.h ARM: 7319/1: Print debug info for SIGBUS in user faults ARM: 7318/1: gic: refactor irq_start assignment ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop ARM: 7315/1: perf: add support for the Cortex-A7 PMU ...

Disintegrate asm/system.h for ARM

2012-03-28T17:30:01+00:00

Disintegrate asm/system.h for ARM. Signed-off-by: David Howells cc: Russell King cc: linux-arm-kernel@lists.infradead.org

ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path

2012-03-24T09:38:54+00:00

The kexec machine crash code can be called in interrupt context via a sysrq trigger made using the magic key combination. If the irq chip dealing with the serial interrupt is using the fasteoi flow handler, then we will never EOI the interrupt because the interrupt handler will be fatal. In the case of a GIC, this results in the crash kernel not receiving interrupts on that CPU interface. This patch adds code (based on the PowerPC implementation) to EOI any pending interrupts on the crash CPU before masking and disabling all interrupts. Secondary cores are not a problem since they are placed into a cpu_relax() loop via an IPI. Reported-by: Lei Wen Signed-off-by: Will Deacon Signed-off-by: Russell King

ARM: kexec: use soft_restart for branching to the reboot buffer

2011-12-12T16:07:36+00:00

Now that there is a common way to reset the machine, let's use it instead of reinventing the wheel in the kexec backend. Signed-off-by: Will Deacon

Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable

2011-12-05T23:20:17+00:00

Conflicts: arch/arm/common/gic.c arch/arm/plat-omap/include/plat/common.h

ARM: restart: remove argument to setup_mm_for_reboot()

2011-11-10T22:30:28+00:00

setup_mm_for_reboot() doesn't make use of its argument, so remove it. Acked-by: Nicolas Pitre Acked-by: Will Deacon Acked-by: H Hartley Sweeten Acked-by: Tony Lindgren Signed-off-by: Russell King

Revert "ARM: 7098/1: kdump: copy kernel relocation code at the kexec prepare stage"

2011-11-07T19:04:36+00:00

This reverts commit 2b034922af2caa19df86f0c502e76cb6f6e910f9. Will Deacon reports: This is causing kexec to fail. The symptoms are that the .init.text section is not loaded as part of the new kernel image, so when we try to do the SMP/UP fixups we hit a whole sea of poison left there by the previous kernel. So my guess is that machine_kexec_prepare *is* too early for preparing the reboot_code_buffer and, unless anybody has a good reason not to, I'd like to revert the patch causing these problems. Reported-by: Will Deacon