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* Revert "x86: signal: change type of paramter for sys_rt_sigreturn()"Ingo Molnar2009-01-211-1/+1
| | | | | | | | | | | | | | | | | | | | This reverts commit 4217458dafaa57d8e26a46f5d05ab8c53cf64191. Justin Madru bisected this commit, it was causing weird Firefox crashes. The reason is that GCC mis-optimizes (re-uses) the on-stack parameters of the calling frame, which corrupts the syscall return pt_regs state and thus corrupts user-space register state. So we go back to the slightly less clean but more optimization-safe method of getting to pt_regs. Also add a comment to explain this. Resolves: http://bugzilla.kernel.org/show_bug.cgi?id=12505 Reported-and-bisected-by: Justin Madru <jdm64@gawab.com> Tested-by: Justin Madru <jdm64@gawab.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*-. Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', ↵Ingo Molnar2008-12-231-8/+8
|\ \ | | | | | | | | | 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core
| | * x86: signal: change type of paramter for sys_rt_sigreturn()Hiroshi Shimamoto2008-12-081-1/+1
| |/ |/| | | | | | | | | | | | | | | Impact: cleanup on 32-bit Peter pointed this parameter can be changed. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: tls.c declare sys_set_thread_area and sys_get_thread_area before they ↵Jaswinder Singh2008-12-181-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | get used Impact: cleanup In asm/syscalls.h move out sys_set_thread_area() and sys_get_thread_area() as they are common for both 32 and 64 bit. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: ldt.c declare sys_modify_ldt before they get usedJaswinder Singh2008-12-161-3/+3
|/ | | | | | | | | | Impact: cleanup In asm/syscalls.h moved out sys_modify_ldt from CONFIG_X86_32 as it is common for both 32 and 64 bit. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, um: ... and asm-x86 moveAl Viro2008-10-231-0/+93
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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