aboutsummaryrefslogtreecommitdiff
path: root/arch/x86_64/kernel/signal.c
AgeCommit message (Collapse)Author
2006-09-26[PATCH] Remove all traces of signal number conversionAndi Kleen
This was old code that was needed for iBCS and x86-64 never supported that. Pointed out by Albert Cahalan Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26[PATCH] Add TIF_RESTORE_SIGMASKAndi Kleen
We need TIF_RESTORE_SIGMASK in order to support ppoll() and pselect() system calls. This patch originally came from Andi, and was based heavily on David Howells' implementation of same on i386. I fixed a typo which was causing do_signal() to use the wrong signal mask. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andi Kleen <ak@suse.de>
2006-06-26[PATCH] x86_64: Remove bogus RED-PEN comment in signal.cAndi Kleen
No red zone possible/needed on the alternative stack. It caused confusion. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[PATCH] x86_64: Remove long obsolete CVSAndi Kleen
Early development of x86-64 Linux was in CVS, but that hasn't been the case for a long time now. Remove the obsolete $Id$s. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23[PATCH] swsusp: finally solve mysqld problemRafael J. Wysocki
This patch from Pavel moves userland freeze signals handling into more logical place. It now hits even with mysqld running. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14[PATCH] x86_64: Save/restore CS in 64bit signal handlers and force __USER_CS ↵Bryan Ford
for CS This allows to run 64bit signal handlers in 64bit processes that run small code snippets in compat mode. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-29[PATCH] convert signal handling of NODEFER to act like other Unix boxes.Steven Rostedt
It has been reported that the way Linux handles NODEFER for signals is not consistent with the way other Unix boxes handle it. I've written a program to test the behavior of how this flag affects signals and had several reports from people who ran this on various Unix boxes, confirming that Linux seems to be unique on the way this is handled. The way NODEFER affects signals on other Unix boxes is as follows: 1) If NODEFER is set, other signals in sa_mask are still blocked. 2) If NODEFER is set and the signal is in sa_mask, then the signal is still blocked. (Note: this is the behavior of all tested but Linux _and_ NetBSD 2.0 *). The way NODEFER affects signals on Linux: 1) If NODEFER is set, other signals are _not_ blocked regardless of sa_mask (Even NetBSD doesn't do this). 2) If NODEFER is set and the signal is in sa_mask, then the signal being handled is not blocked. The patch converts signal handling in all current Linux architectures to the way most Unix boxes work. Unix boxes that were tested: DU4, AIX 5.2, Irix 6.5, NetBSD 2.0, SFU 3.5 on WinXP, AIX 5.3, Mac OSX, and of course Linux 2.6.13-rcX. * NetBSD was the only other Unix to behave like Linux on point #2. The main concern was brought up by point #1 which even NetBSD isn't like Linux. So with this patch, we leave NetBSD as the lonely one that behaves differently here with #2. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25[PATCH] Cleanup patch for process freezingChristoph Lameter
1. Establish a simple API for process freezing defined in linux/include/sched.h: frozen(process) Check for frozen process freezing(process) Check if a process is being frozen freeze(process) Tell a process to freeze (go to refrigerator) thaw_process(process) Restart process frozen_process(process) Process is frozen now 2. Remove all references to PF_FREEZE and PF_FROZEN from all kernel sources except sched.h 3. Fix numerous locations where try_to_freeze is manually done by a driver 4. Remove the argument that is no longer necessary from two function calls. 5. Some whitespace cleanup 6. Clear potential race in refrigerator (provides an open window of PF_FREEZE cleared before setting PF_FROZEN, recalc_sigpending does not check PF_FROZEN). This patch does not address the problem of freeze_processes() violating the rule that a task may only modify its own flags by setting PF_FREEZE. This is not clean in an SMP environment. freeze(process) is therefore not SMP safe! Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] xen: x86_64: use more usermode macroVincent Hanquez
Make use of the user_mode macro where it's possible. This is useful for Xen because it will need only to redefine only the macro to a hypervisor call. Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk> Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] xen: x86_64: Add macro for debugregVincent Hanquez
Add 2 macros to set and get debugreg on x86_64. This is useful for Xen because it will need only to redefine each macro to a hypervisor call. Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk> Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] x86_64: never block forced SIGSEGVRoland McGrath
This is the x86_64 version of the signal fix I just posted for i386. This problem was first noticed on PPC and has already been fixed there. But the exact same issue applies to other platforms in the same way. The signal blocking for sa_mask and the handled signal takes place after the handler setup. When the stack is bogus, the handler setup forces a SIGSEGV. But then this will be blocked, and returning to user mode will fault again and iterate. This patch fixes the problem by checking whether signal handler setup failed, and not doing the signal-blocking if so. This copies what was done in the ppc code. I think all architectures' signal handler setup code follows this pattern and needs the change. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-28[PATCH] x86_64: signal.c build fixOliver Korpilla
For unspecified reasons, arch/x86_64/kernel/signal.c apparently needs ia32_unistd.h. Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20[PATCH] x86_64: Fix 32bit system call restartAndi Kleen
The test case at http://cvs.sourceforge.net/viewcvs.py/posixtest/posixtestsuite/conforman ce/interfaces/clock_nanosleep/1-5.c fails if it runs as a 32bit process on x86_86 machines. The root cause is the sub 32bit process fails to restart the syscall after it is interrupted by a signal. The syscall number of sys_restart_syscall in table sys_call_table is __NR_restart_syscall (219) while it's __NR_ia32_restart_syscall (0) in ia32_sys_call_table. When regs->rax==(unsigned long)-ERESTART_RESTARTBLOCK, function do_signal doesn't distinguish if the process is 64bit or 32bit, and always sets restart syscall number as __NR_restart_syscall (219). Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-26[PATCH] amd64 rt_sigframe user annotationAl Viro
->pretcode in struct rt_sigframe is a userland pointer (and already treated as such by code using that field). Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16[PATCH] x86_64: Fix interaction of single stepping with debuggersAndi Kleen
Ported from i386/Linus Fix another TF corner case. Need to do the special TF handling for all signals to make debuggers happy Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16[PATCH] x86_64: Some fixes for single step handlingAndi Kleen
Ported from i386/Linus Be more careful with TF handling to fix some copy protection codes in Wine Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!