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2012-10-01c6x: switch to generic kernel_execveMark Salter
Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01c6x: add ret_from_kernel_thread(), simplify kernel_thread()Mark Salter
Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01mn10300: convert to generic kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01mn10300: switch to generic kernel_execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01mn10300: switch to generic sys_execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01mn10300: split ret_from_fork, simplify kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01frv: switch to generic kernel_thread()Al Viro
2012-10-01frv: switch to generic kernel_execveAl Viro
Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01frv: switch to generic sys_execve()Al Viro
current_pt_regs() here is simply __frame Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01frv: split ret_from_fork, simplify kernel_thread() a lotAl Viro
Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01m68k: switch to generic sys_execve()/kernel_execve()Al Viro
The tricky part here is that task_pt_regs() on m68k works *only* for process inside do_signal(). However, we need something much simpler - pt_regs of a process inside do_signal() may be at different offsets from the stack bottom, depending on the way we'd entered the kernel, but for a task inside sys_execve() it *is* at constant offset. Moreover, for a kernel thread about to become a userland process the same location is also fine - setting sp to that will leave the kernel stack pointer at the very bottom of the kernel stack when we finally switch to userland. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01m68k: split ret_from_fork(), simplify kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01m68k: always set stack frame format for ColdFire on thread startGreg Ungerer
The stack frame "format" field needs to be explicitly set on thread creation on ColdFire. For a normal long word aligned user stack pointer the frame format is 0x4. We were doing this for non-MMU ColdFire, but not for the case with MMU enabled. So fix it so we always do it if targeting ColdFire. The old code happend to rely on the stack frame format being inhereted from the process calling exec. Furture changes means that may not always work, so we really do want to set it explicitly. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30powerpc: switch to generic sys_execve()/kernel_execve()Al Viro
the only non-obvious part is that current_pt_regs() is really needed here - task_pt_regs() is NULL for kernel threads; it's OK for ptrace uses (the thing task_pt_regs() is intended for), but not for us. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30powerpc: split ret_from_forkAl Viro
... and get rid of in-kernel syscalls in kernel_thread() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30s390: convert to generic kernel_execve()Al Viro
same situation as with alpha and arm - only massage needed Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30s390: switch to generic kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30s390: fold kernel_thread_helper() into ret_from_fork()Al Viro
... and don't bother with syscall return path in case of kernel threads. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30s390: fold execve_tail() into start_thread(), convert to generic sys_execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30um: switch to generic kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30x86, um/x86: switch to generic sys_execve and kernel_execveAl Viro
32bit wrapper is lost on that; 64bit one is *not*, since we need to arrange for full pt_regs on stack when we call sys_execve() and we need to load callee-saved ones from there afterwards. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30x86: split ret_from_forkAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30alpha: introduce ret_from_kernel_execve(), switch to generic kernel_execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30alpha: switch to generic kernel_thread()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30alpha: switch to generic sys_execve()Al Viro
get rid of sys_execve() wrapper, while we are at it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30arm: get rid of execve wrapper, switch to generic execve() implementationAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30arm: optimized current_pt_regs()Al Viro
... no need to read current_thread_info()->task only to feed it to task_thread_page() immediately afterwards. Moreover, not using current_thread_info() at all ends up with better assembler - we need a location very close to the top of kernel stack page and it's actually better to do or with 0x1fff, followed be subtracting a small constant than and with ~0x1fff, followed by adding a large one. Both & and | would be a couple of insns (mvn lsr/mvn lsl for |, a pair of bic for &), but the following addition would cost a pair of add while the subtraction ends up as a single sub. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30arm: introduce ret_from_kernel_execve(), switch to generic kernel_execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk]Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-30preparation for generic kernel_thread()Al Viro
Let architectures select GENERIC_KERNEL_THREAD and have their copy_thread() treat NULL regs as "it came from kernel_thread(), sp argument contains the function new thread will be calling and stack_size - the argument for that function". Switching the architectures begins shortly... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20um: kill thread->forkingAl Viro
we only use that to tell copy_thread() done by syscall from that done by kernel_thread(). However, it's easier to do simply by checking PF_KTHREAD in thread flags. Merge sys_clone() guts for 32bit and 64bit, while we are at it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20um: let signal_delivered() do SIGTRAP on singlestepping into handlerAl Viro
... rather than duplicating that in sigframe setup code (and doing that inconsistently, at that) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20um: don't leak floating point state and segment registers on execve()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20um: take cleaning singlestep to start_thread()Al Viro
... assuming it's needed to be done at all Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20don't bother exporting kernel_execve()Al Viro
most of the architectures don't and there's not a single caller outside of core kernel. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20the only place that needs to include asm/exec.h is linux/binfmts.hAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20get rid of generic instances of asm/exec.hAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-20x86: get rid of TIF_IRET hackeryAl Viro
TIF_NOTIFY_RESUME will work in precisely the same way; all that is achieved by TIF_IRET is appearing that there's some work to be done, so we end up on the iret exit path. Just use NOTIFY_RESUME. And for execve() do that in 32bit start_thread(), not sys_execve() itself. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-09-19Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-shLinus Torvalds
Pull SuperH fixes from Paul Mundt. * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: sh: Fix up TIF_NOTIFY_RESUME sans TIF_SIGPENDING handling. sh: pfc: Release spinlock in sh_pfc_gpio_request_enable() error path sh: intc: Fix up multi-evt irq association.
2012-09-18sh: Fix up TIF_NOTIFY_RESUME sans TIF_SIGPENDING handling.Al Viro
As Al notes, we missed a TIF_NOTIFY_RESUME check which caused any handlers without TIF_SIGPENDING also set to skip the notification: Looks like while it is in the relevant masks *and* checked in do_notify_resume() both on 32bit and 64bit variants since commit ab99c733ae73cce31f2a2434f7099564e5a73d95 ("sh: Make syscall tracer use tracehook notifiers, add TIF_NOTIFY_RESUME.") they are actually *not* reached without simulataneous SIGPENDING, since the actual glue in the callers had not been updated back then and still checks for _TIF_SIGPENDING alone when deciding whether to hit do_notify_resume() or not. Reported-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-09-14Merge branch 'fixes-for-3.6' of ↵Linus Torvalds
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull one more DMA-mapping fix from Marek Szyprowski: "This patch fixes very subtle bug (typical off-by-one error) which might appear in very rare circumstances." * 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: arm: mm: fix DMA pool affiliation check
2012-09-14Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "This tree includes various fixes" Ingo really needs to improve on the whole "explain git pull" part. "Various fixes" indeed. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/hwpb: Invoke __perf_event_disable() if interrupts are already disabled perf/x86: Enable Intel Cedarview Atom suppport perf_event: Switch to internal refcount, fix race with close() oprofile, s390: Fix uninitialized memory access when writing to oprofilefs perf/x86: Fix microcode revision check for SNB-PEBS
2012-09-13Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc bug fixes from Olof Johansson: - A set of OMAP fixes, about half of them PM/clock related, the rest scattered over the platform code but all small and targeted to real bugs. - Two small i.MX fixes for SSI device clock setup. * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: clk-imx35: Fix SSI clock registration ARM: clk-imx25: Fix SSI clock registration ARM: OMAP4: Fix array size for irq_target_cpu ARM: OMAP4: hwmod data: temporarily comment out data for the sl2if IP block ARM: OMAP: hwmod code: Disable module when hwmod enable fails ARM: OMAP3: hwmod data: fix iva2 reset info ARM: OMAP3xxx: clockdomain: fix software supervised wakeup/sleep ARM: OMAP2+: am33xx: Fix the timer fck clock naming convention ARM: OMAP: Config fix for omap3-touchbook board ARM: OMAP: sram: skip the first 16K on OMAP3 HS ARM: OMAP: sram: fix OMAP4 errata handling ARM: OMAP: timer: obey the !CONFIG_OMAP_32K_TIMER
2012-09-12Merge tag 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixesOlof Johansson
ARM: i.MX: Fix SSI clock associations for i.MX25/i.MX35 * tag 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6: ARM: clk-imx35: Fix SSI clock registration ARM: clk-imx25: Fix SSI clock registration + Linux 3.6-rc5
2012-09-13Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "It's been a while... so there's a little more here than normal. Mostly updates from Will for the breakpoint stuff, and plugging a few holes in the user access functions which crept in when domain support was disabled for ARMv7 CPUs." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7529/1: delay: set loops_per_jiffy when moving to timer-based loop ARM: 7528/1: uaccess: annotate [__]{get,put}_user functions with might_fault() ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS ARM: 7526/1: traps: send SIGILL if get_user fails on undef handling path ARM: 7521/1: Fix semihosting Kconfig text ARM: 7513/1: Make sure dtc is built before running it ARM: 7512/1: Fix XIP build due to PHYS_OFFSET definition moving ARM: 7499/1: mm: Fix vmalloc overlap check for !HIGHMEM ARM: 7503/1: mm: only flush both pmd entries for classic MMU ARM: 7502/1: contextidr: avoid using bfi instruction during notifier ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores ARM: 7497/1: hw_breakpoint: allow single-byte watchpoints on all addresses ARM: 7496/1: hw_breakpoint: don't rely on dfsr to show watchpoint access type ARM: Fix ioremap() of address zero
2012-09-12Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin Pull blackfin updates from Bob Liu: "One kbuild and a smp build fix." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin: kbuild: add symbol prefix arg to kallsyms blackfin: smp: adapt to generic smp helpers
2012-09-11ARM: clk-imx35: Fix SSI clock registrationFabio Estevam
SSI block has two types of clock: ipg: bus clock, the clock needed for accessing registers. per: peripheral clock, the clock needed for generating the bit rate. Currently SSI driver only supports slave mode and only need to handle the ipg clock, because the peripheral clock comes from the master codec. Only register the ipg clock and do not register the peripheral clock for ssi. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: stable@vger.kernel.org
2012-09-11ARM: clk-imx25: Fix SSI clock registrationFabio Estevam
SSI block has two types of clock: ipg: bus clock, the clock needed for accessing registers. per: peripheral clock, the clock needed for generating the bit rate. Currently SSI driver only supports slave mode and only need to handle the ipg clock, because the peripheral clock comes from the master codec. Only register the ipg clock and do not register the peripheral clock for ssi. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: stable@vger.kernel.org
2012-09-11kbuild: add symbol prefix arg to kallsymsJames Hogan
Commit 1f2bfbd00e466ff3489b2ca5cc75b1cccd14c123 ("kbuild: link of vmlinux moved to a script") introduced in v3.5-rc1 broke kallsyms on architectures which have symbol prefixes. The --symbol-prefix argument used to be added to the KALLSYMS command line from the architecture Makefile, however this isn't picked up by the new scripts/link-vmlinux.sh. This resulted in symbols like kallsyms_addresses being added which weren't correctly overriding the weak symbols such as _kallsyms_addresses. These could then trigger BUG_ONs in kallsyms code. This is fixed by removing the KALLSYMS addition from the architecture Makefile, and using CONFIG_SYMBOL_PREFIX in the link-vmlinux.sh script to determine whether to add the --symbol-prefix argument. Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-09-11Merge tag 'kvm-3.6-2' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM updates from Avi Kivity: "A trio of KVM fixes: incorrect lookup of guest cpuid, an uninitialized variable fix, and error path cleanup fix." * tag 'kvm-3.6-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: fix error paths for failed gfn_to_page() calls KVM: x86: Check INVPCID feature bit in EBX of leaf 7 KVM: PIC: fix use of uninitialised variable.
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