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2008-09-20sh: Support kernel stacks smaller than a page.Paul Mundt
This follows the powerpc commit f6a616800e68b61807d0f7bb0d5dc70665ef8046 '[POWERPC] Fix kernel stack allocation alignment'. SH has traditionally forced the thread order to be relative to the page size, so there were never any situations where the same bug was triggered by slub. Regardless, the usage of > 8kB stacks for the larger page sizes is overkill, so we switch to using slab allocations there, as per the powerpc change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-20sh: Disable 4kB stacks when using PAGE_SIZE_64KB.Paul Mundt
This combination triggers a divide by zero in kernel/fork.c when calculating the initial max_threads value: max_threads = mempages / (8 * THREAD_SIZE / PAGE_SIZE); Simply disable 4K stacks on 64kB PAGE_SIZE to work around this, as it's not a terribly useful combination to begin with. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: HAVE_IOREMAP_PROT depends on MMU.Paul Mundt
HAVE_IOREMAP_PROT enables an unconditional reference to generic_access_phys(), which remains undefined in the nommu case. As there's no point in supporting this there anyways, simply fix up the dependency. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: Fix up headers_check regression.Paul Mundt
linux/mmzone.h isn't exported, kill it off from asm/setup.h and simply deal with it in the places that have a dependency instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: Consolidate struct sh_cpuinfo definitions across _32/_64 split.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: Fix up signal_64 conflicting handle_signal() definition.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: Make memory hot-add and hot-remove depend on MMU.Paul Mundt
Cleans up link numerous build issues with page migration and so on when enabled on nommu builds. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-17sh: Fix up fpu emu build.Paul Mundt
The addition of the kprobes code pushed down a variable declaration, clean it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-13sh: latencytop support.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Tidy up ELF core dumps.Paul Mundt
These have been using overrides for ELF_CORE_COPY_TASK_REGS and ELF_CORE_COPY_FPREGS while the generic versions can be used instead. Presently the pt_regs are also duplicated across elf_core_copy_regs() and elf_core_copy_task_regs(), this switches to simply copying out through elf_core_copy_regs() instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Check SR.DSP bit for DSP regset validity.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Add missing task_user_regset_view() definition.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Add DSP registers to regset interface.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Fix up NUMA build error with se7722_defconfig.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Enable HAVE_ARCH_TRACEHOOK.Paul Mundt
Now that the rest of the support requirements are out of the way, finally enable support for tracehook. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Provide the asm/syscall.h interface, needed by tracehook.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: provide user_stack_pointer(), needed for tracehook support.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Flag T-bit for syscall restart.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: ioremap_prot support.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: ptrace: Introduce user_regset interface for gp regs.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: Provide a fixed UTS_MACHINE definition for sh64.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: update edosk7760 defconfig for physmap-flash.Luca Santini
Signed-off-by: Luca Santini <luca.santini@spesonline.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-12sh: edosk7760 physmap-flash support.Luca Santini
Signed-off-by: Luca Santini <luca.santini@spesonline.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-11rtc-sh: Unsigned rtc->{periodic,carry,alarm}_irq cannot be negativeroel kluin
possibly since commit b420b1a7a17ea88531d0e12b2f2679a0c8365803 Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-11sh_eth: unsigned ndev->irq cannot be negativeroel kluin
unsigned ndev->irq cannot be negative Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-10sh: intc_prio_data() test before subtraction on unsignedroel kluin
bit is unsigned, so test before subtraction Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-09sh: kprobes: kretprobe_trampoline needs to be global.Paul Mundt
Needed by CONFIG_TRACING. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-09sh: Add R2D+ defconfig for qemu system emulator.Paul Mundt
This adds a defconfig for the R2D+ target in the qemu system emulator. Eventually it will be possible to simply use the r2d+ defconfig as it is. Provided by Shin-ichiro KAWASAKI. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Derive calibrate_delay lpj from clk fwk.Paul Mundt
All CPUs must have a sensible cpu_clk definition these days, which we can safely use for deriving the preset loops_per_jiffy. The only odd one out is SH-5, which hasn't been hammered in to the framework yet. Based on the ST patch. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Carl Shaw <carl.shaw@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: __kprobes annotations and formatting cleanups.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: Fix up race against probe point removal.Paul Mundt
Handle a corner case where another CPU or debugger removes the probe point from underneath us. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: Fix up a preemption imbalance on jprobe return.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: Default to NOTIFY_DONE for unhandled debug traps.Paul Mundt
Presently this is doing a force_sig() SIGTRAP, which is already taken care of in the generic code if no one asserts NOTIFY_STOP. Switch the default return to NOTIFY_DONE in the case of unhandled traps, so that the same trap may pass through to other users on the same die chain. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: Use trapa #0x3a for breakpoint trap.Paul Mundt
Not all parts support trapa #0xff, so use something within the debug trap range that's accessible on all parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: kprobes: Hook up kprobe_fault_handler() in the page fault path.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Disable seccomp support by default.Paul Mundt
This was initially checked in with a stupid default of y, while most everyone is going to want to have this disabled anyways. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Mark kretprobe_trampoline_holder static and __used.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Add EDOSK7760 mach type.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Add Renesas EDOSK7760 board support.Luca Santini
This adds support for the Renesas (RTE) EDOSK7760 board. Currently supported devices are: - ramdisk support - ethernet support - nfs support - ext2/ext3 support - i2c support - fb support (M) Signed-off-by: Luca Santini <luca.santini@spesonline.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Enable IRLM mode for SH7760 IRQ_MODE_IRQ.Luca Santini
Follows the same setting as SH7750. Signed-off-by: Luca Santini <luca.santini@spesonline.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: uninline flush_icache_all().Paul Mundt
This uses jump_to_uncached() which is now given the noinline attribute due to the special section mapping. Kill off the inline attribute to fix up compilation failure. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Add the rest of the boot targets to arch/sh/boot/.gitignore.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Add kprobes support.Chris Smith
Initial support for kprobes/kretprobes for 32-bit SH platforms. [ General cleanup and some rework for the kretprobe hash lock. -- PFM ] Signed-off-by: Chris Smith <chris.smith@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: remove unnecessary memset after alloc_bootmem_low_pagesMarek Skuczynski
Because alloc_bootmem functions return the allocated memory always zeroed, an additional call of memset on allocated memory is unnecessary. Signed-off-by: Marek Skuczynski <M.Skuczynski@adbglobal.com> Signed-off-by: Carl Shaw <carl.shaw@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: fix the TMU code to allow a fully running NO_HZ systemFrancesco Virlinzi
This patch fixes the TMU code to allow NO_HZ to work on sh Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Subnormal double to float conversionCarl Shaw
This patch adds support for the SH4 to convert a subnormal double into a float by catching the FPE and implementing the FCNVDS instruction in software. Signed-off-by: Carl Shaw <carl.shaw@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Fix an unusual memory initialisation error.Stuart Menefy
This fixes a problems with the set up of Linux memory: - When reserving memory at boot time, the code previously reserved the bottom page of memory, and then from one page up to the end of the bootmap. This had the desired effect, but was strictly speaking wrong, as the one page was actually whatever CONFIG_ZERO_PAGE_OFFSET had been set to. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Fix uImage load address in 32-bit mode.Chris Smith
Fix "make uImage" load and entry addresses in 32-bit mode. Signed-off-by: Chris Smith <chris.smith@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: vmalloc pgtable sync fix.Stuart Menefy
This fixes a problem in the code which copies the vmalloc portion of the kernel's page table into the current user space page table. The addition of the four level page table code breaks on folded page tables, because the pud level is always present (although folded). This updates the code to use the same style of updates for the pud as is used for the pgd level. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08sh: Fix up broken 32-bit initrd support.Stuart Menefy
Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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