- 29 Jul, 2005 40 commits
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Eric W. Biederman authored
In an uncensored copy of code from i386 to x86_64 I wound up with inline assembly with the wrong constraints. Use input constraints instead of output constraints. So I know the assembler will do the right thing specify the size of the operand lidtq and lgdtq instead of just lidt and lgdt. Make load_segments use an input constraint, and delete the macro fun. Without having to reload %cs like I do on i386 this code is noticeably simpler. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Eric W. Biederman authored
For some reason I was telling my inline assembly that the input argument was an output argument. Playing in the trampoline code I have seen a couple of instances where lgdt get the wrong size (because the trampolines run in 16bit mode) so use lgdtl and lidtl to be explicit. Additionally gcc-3.3 and gcc-3.4 want's an lvalue for a memory argument and it doesn't think an array of characters is an lvalue so use a packed structure instead. Signed-off-by:
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Eric W. Biederman authored
If device_suspend(PMSG_FREEZE) is not ready to be called in kernel_restart it is definitely not ready to be called in the even more fickle kernel_kexec. Signed-off-by:
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Linus Torvalds authored
Some edge problems with the original C rewrite. Thanks go to Cal Peake, who pinpointed the breakage to the rewrite, and tested this fixed version. Signed-off-by: -
Linus Torvalds authored
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Dave Jones authored
From: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by:Dave Jones <davej@redhat.com>
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Linus Torvalds authored
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Linus Torvalds authored
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Linus Torvalds authored
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Russell King authored
Since the secondary CPUs will not be operating in symetric mode while they are held in the pen, we need to ensure that the write to pen_release is visible to them, by flushing the cache. Signed-off-by:Russell King <rmk+kernel@arm.linux.org.uk>
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Linus Torvalds authored
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Stephen Smalley authored
This patch fixes the address length checks in the selinux_socket_connect hook to be no more restrictive than the underlying ipv4 and ipv6 code; otherwise, this hook can reject valid connect calls. This patch is in response to a bug report where an application was calling connect on an INET6 socket with an address that didn't include the optional scope id and failing due to these checks. Signed-off-by:
Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by:
James Morris <jmorris@redhat.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Jon Smirl authored
Fix a buffer overflow vunerabilty in previous cmap patch Signed-off-by:
Jon Smirl <jonsmirl@gmail.com> Signed-off-by:
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Dave Hansen authored
Somewhere recently, the TSC got re-enabled for timekeeping on NUMAQ machines. However, the hardware makes these get unsynchronized quite badly. So badly, in fact, that the code to fix up the skew can just hang on boot. This patch re-disables them. It's nicely confined to the numaq.c file. It would be great if this could make it into 2.6.13, I think it counts as a bugfix. Tested on a 16-proc 4-node NUMAQ. Signed-off-by:
Dave Hansen <haveblue@us.ibm.com> Signed-off-by:
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George Anzinger authored
(We found this (after a customer complained) and it is in the kernel.org kernel. Seems that for CLOCK_MONOTONIC absolute timers and clock_nanosleep calls both the request time and wall_to_monotonic are subtracted prior to the normalize resulting in an overflow in the existing normalize test. This causes the result to be shifted ~4 seconds ahead instead of ~2 seconds back in time.) The normalize code in posix-timers.c fails when the tv_nsec member is ~1.2 seconds negative. This can happen on absolute timers (and clock_nanosleeps) requested on CLOCK_MONOTONIC (both the request time and wall_to_monotonic are subtracted resulting in the possibility of a number close to -2 seconds.) This fix uses the set_normalized_timespec() (which does not have an overflow problem) to fix the problem and as a side effect makes the code cleaner. Signed-off-by:
George Anzinger <george@mvista.com> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Actually implement the hostfs "sync" method. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Christophe Lucas authored
printk() calls should include appropriate KERN_* constant. Signed-off-by:
Christophe Lucas <clucas@rotomalug.org> Signed-off-by:
Domen Puncer <domen@coderock.org> Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Bodo Stroesser authored
Fix a typo in wait_stub_done. Signed-off-by:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
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Jeff Dike authored
update_process_times was missing its irq_enter/irq_exit wrapper. This caused ksoftirqd to be scheduled on every clock tick. Signed-off-by:
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Jeff Dike authored
By this point, .is_user has already been set, so this assignment is useless. Signed-off-by:
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Bodo Stroesser authored
It's wrong to pop a fixed number of words from stack before calling sigreturn, as the number depends on what code is generated by the compiler for the start of stub_segv_handler(). What we need is esp containing the address of sigcontext. So we explicitly load that pointer into esp. Signed-off-by:
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Jeff Dike authored
We added an include of asm/vm86.h in include/asm-i386/ptrace.h. Since UML includes the underlying arch's ptrace.h, it needs an asm/vm86.h in order to build. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Just a Kbuild subtlety, not listing a target file inside targets causes it to be rebuilt each time, and as a consequence everything depending on it is rebuilt. Signed-off-by:
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Jeff Dike authored
With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Revert the following patch, because of miscompilation problems in different environments leading to UML not working *at all* in TT mode; it was merged lately in 2.6 development cycle, a little after being written, and has caused problems to lots of people; I know it's a bit too long, but it shouldn't have been merged in first place, so I still apply for inclusion in the -stable tree. Anyone using this feature currently is either using some older kernel (some reports even used 2.6.12-rc4-mm2) or using this patch, as included in my -bs patchset. For now there's not yet a fix for this patch, so for now the best thing is to drop it (which was widely reported to give a working kernel, and as such was even merged in -stable tree). "Convert the boot-time host ptrace testing from clone to fork. They were essentially doing fork anyway. This cleans up the code a bit, and makes valgrind a bit happier about grinding it." URL: http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=98fdffccea6cc3fe9dba32c0fcc310bcb5d71529Signed-off-by:
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Alasdair G Kergon authored
This patch is an attempt to fix deadlocks discovered in the core dm. The problems boil down to md->lock having to be held in too many places, so I've split it into two: md->suspend_lock and md->io_lock. suspend_lock is now held throughout dm_suspended() as well as dm_resume() and dm_swap_table() so that these functions cannot run concurrently: there's no requirement for that and it added complexity. DMF_FS_LOCKED becomes redundant: DMF_SUSPENDED provides adequate protection. Signed-Off-By:
Alasdair G Kergon <agk@redhat.com> Signed-off-by:
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Alasdair G Kergon authored
Avoid another bdget_disk which can deadlock. Signed-Off-By:
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Alasdair G Kergon authored
Some code tidy-ups in preparation for the next patches. Change dm_table_pre/postsuspend_targets to accept NULL. Use dm_suspended() throughout. Signed-Off-By:
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Ravikiran G Thirumalai authored
While booting with SMT disabled in bios, when using acpi srat to setup cpu_to_node[], sparse apic_ids create problems. Without this patch, intel x86_64 boxes with hyperthreading disabled in the bios (and which rely on srat for numa setup) endup having incorrect values in cpu_to_node[] arrays, causing sched domains to be built incorrectly etc. Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Andi Kleen authored
arch/x86_64/pci/k8-bus.c: In function `fill_mp_bus_to_cpumask': arch/x86_64/pci/k8-bus.c:32: warning: unused variable `printed' Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Nishanth Aravamudan authored
Replace schedule_timeout() with msleep() to guarantee the task delays as expected. Signed-off-by:
Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by:
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Jesse Millan authored
This patch eliminates the GCC4 warning on the x86_64 platform: kernel/sched.c:1824: warning: control may reach end of non-void function 'sched_find_first_bit' being inlined. The change follows the lead of others, i.e. it is guaranteed that at least one of b[0], b[1], or b[2] will have a bit set and evaluate to true. That being said, GCC4.0.0 notices that the code flow does not return anything if b[0], b[1] and b[2] are not true. Since we know better, if it's not b[0] or b[1], it has to be b[2]. Signed-off-by:
Jesse Millan <jessem@cs.pdx.edu> Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
This avoids some potential stack overflows with very deep softirq callchains. i386 does this too. TOADD CFI annotation Signed-off-by:
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Andi Kleen authored
Save a byte here and there. Ultimatively useless, but these things always catch my eyes when reading the code so just fix them for now. Also I got at least one patch fixing of them already, which gives a good excuse. Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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Andi Kleen authored
This avoids confusing the disassembler. Costs 2 bytes per BUG. Thanks to Suresh Siddha and Jan Beulich for suggesting suitable instructions. Signed-off-by:
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Andreas Gruenbacher authored
Icecream preprocesses c sources locally, and sends the result off to a remote host for compiling. It does not recognize includes at assembler level. The fix is to put the assemberincludes an a separate .s file, which will always be assembled locally. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Signed-off-by:
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Andi Kleen authored
Use physical mode instead of logical mode to address more CPUs. This is also used in the CPU hotplug case to avoid a race. Signed-off-by:
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Andi Kleen authored
Will be obsolete with physflat. Signed-off-by:
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