- 24 Feb, 2006 40 commits
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James Bottomley authored
Recent GDT changes broke the SMP boot sequence if the booting CPU is numbered anything other than zero. There's also a subtle source of error in that the boot time CPU now uses cpu_gdt_table (which is actually the GDT for booting CPUs in head.S). This patch fixes both problems by making GDT descriptors themselves allocated from a per_cpu area and switching to them in cpu_init(), which now means that cpu_gdt_table is exclusively used for booting CPUs again. Signed-off-by:
James Bottomley <James.Bottomley@SteelEye.com> Cc: Zachary Amsden <zach@vmware.com> Cc: Matt Tolentino <metolent@snoqualmie.dp.intel.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Christoph Lameter authored
migrate_pages_to() allocates a list of new pages on the intended target node or with the intended policy and then uses the list of new pages as targets for the migration of a list of pages out of place. When the pages are allocated it is not clear which of the out of place pages will be moved to the new pages. So we cannot specify an address as needed by alloc_page_vma(). This causes problem for MPOL_INTERLEAVE which will currently allocate the pages on the first node of the set. If mbind is used with vma that has the policy of MPOL_INTERLEAVE then the interleaving of pages may be destroyed. This patch fixes that by generating a fake address for each alloc_page_vma which will result is a distribution of pages as prescribed by MPOL_INTERLEAVE. Lee also noted that the sequence of nodes for the new pages seems to be inverted. So we also invert the way the lists of pages for migration are build. Signed-off-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
Lee Schermerhorn <lee.schermerhorn@hp.com> Looks-ok-to: Andi Kleen <ak@suse.de> Signed-off-by:
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James Bottomley authored
Right at the moment (thanks to a patch from Andrew), cpu_possible_map on voyager is CPU_MASK_NONE, which means the machine always thinks it has no CPUs. Fix that by doing an early initialisation of the cpu_possible_map from the cpu_phys_present_map. (akpm: we aim to please) Signed-off-by:
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James Bottomley authored
It looks like I can't get away without exporting topology functions from voyager any longer, so add them to the voyager subarchitecture. Signed-off-by:
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Simon Vogl authored
Fix a kernel oops for Intel P30 flashes, where the wait queue head was not initialized for the flchip struct, which in turn caused a crash at the first read operation. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: <stable@kernel.org> Signed-off-by:
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Prasanna S Panchamukhi authored
Fix a problem seen on i686 machine with NX support where the instruction could not be single stepped because of NX bit set on the memory pages allocated by kprobes module. This patch provides allocation of instruction solt so that the processor can execute the instruction from that location similar to x86_64 architecture. Thanks to Bibo and Masami for testing this patch. Signed-off-by:
Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by:
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Samuel Thibault authored
EGA boards suck: they mostly have write-only registers. This is particularly problematic for the overflow register: for being able to write to it, we would have to handle vertical sync & such too, which (I'd say) would potentially break a lot of configurations. Instead, just disabling vertical resize for EGA boards is just nice enough (horizontal resize still works). Fixes http://bugzilla.kernel.org/show_bug.cgi?id=6106Signed-off-by:
Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Rafal Olearski <olearski@mail2.kim.net.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Improve (especially for coherence) some prototypes, and return code of init_cow_file in error case - for a short write return -EINVAL, otherwise return the error we got! Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by:
Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Do precise error handling: print precise error messages, distinguishing short reads and read errors. This functions fails frequently enough for me so I bothered doing this fix. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Fix an fd leak and a return of -1 instead of -errno in the error path - this showed up in intensive testing of HPPFS, the os_connect_socket user. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Use __attribute_used__ instead of __attribute__ ((unused)). This will help with GCC > 3.2. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
To avoid conflicts, in kernel files errno is expanded to kernel_errno, to distinguish it from glibc errno. In this case, the code wants to use the libc errno but the kernel one is used; in the other usage, we return errno in place of -errno in case of an error. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Improve some error messages in the COW driver, and say V3, not V2, when talking about V3 format. Also resync with our userspace code utility a bit more. Signed-off-by:
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Takashi Iwai authored
Remove snd_device_free() for an opl3-oss instance which should have been released. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Cc: Jaroslav Kysela <perex@suse.cz> Cc: <stable@kernel.org> Signed-off-by:
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Rene Herman authored
I noticed on 2.6.16-rc4 that my MPU-401 wasn't functional, due to a simple copy & paste error in sound/isa/cs423x/cs4236.c. Acked-by:
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Hirokazu Takata authored
Fix and update for gcc-4.0. - arch/m32r/kernel/signal.c: Change type of the 8th parameter of sys_rt_sigsuspend() from 'struct pt_regs' to 'struct pt_regs *'. This functions make use of the 'regs' parameter to return status value, but gcc-4.0 optimizes and removes it as a dead code. Functions, sys_sigaltstack() and sys_rt_sigreturn(), have also modified. - arch/m32r/lib/usercopy.c, include/asm-m32r/uaccess.h: Add early-clobber constraints('&') to output values of asm statements; these constraints seems to be required for gcc-4.0 register assignment. Signed-off-by:Hayato Fujiwara <fujiwara@linux-m32r.org> Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Add -O2 option to AFLAGS to enable asm code optimization for m32r. On m32r gas, "-m32r2 -O" option enables assembler's parallel code generation optimization for M32R2 ISA as a default. So, "-no-parallel" option is required explicitly for a cpu core with single instuction issuing, for example, VDEC2. Signed-off-by:
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Linus Torvalds authored
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Adrian Bunk authored
drivers/net/tlan.c compiles with CONFIG_PCI=n only with a warning and due to the dead code elimination of gcc. Additionally, this fixes the only compile error I found with CONFIG_PCI=n and the gcc -Werror-implicit-function-declaration flag on i386. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
Jeff Garzik <jeff@garzik.org>
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Linus Torvalds authored
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Michal Ostrowski authored
tty_schedule_flip() would schedule a thread that would call flush_to_ldisc(). If tty_buffer_request_room() gets called prior to that thread running -- which is likely in this loop in hvc_poll(), it would set the active flag in the tty buffer and consequently flush_to_ldisc() would ignore it. The result is that input on the hvc console is not processed. This fix calls tty_flip_buffer_push (and flags the tty as "low_latency"). The push to the ldisc thus happens synchronously. Signed-off-by:
Michal Ostrowski <mostrows@watson.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Segher Boessenkool authored
Maple firmware does not need PCI resource allocation, and in fact, it can cause problems in some strange cases. Signed-off-by:
Segher Boessenkool <segher@kernel.crashing.org> Acked-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Segher Boessenkool authored
Do disable, not enable, the HT APIC IRQ in the function that is supposed to. Enable the MPIC IRQ before enabling the downstream APIC IRQ, avoids potentially losing an interrupt. Signed-off-by:
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Olof Johansson authored
Update defconfigs for g5, pseries and generic ppc64. Default choices for everything, with the following exceptions: * Enable WINDFARM_PM112 on g5 and ppc64. * Increase CONFIG_NR_CPUS to 4 in g5_defconfig * CONFIG_TIGON3=y instead of =m in g5_defconfig Signed-off-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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Anton Blanchard authored
HMT support is currently broken and needs to be reworked to play nicely with the SMT scheduler. Remove the bit rotten bits for the time being. I also updated an incorrect comment, we enter __secondary_hold with the physical cpu id in r3. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Anton Blanchard authored
The runlatch SPR can take a lot of time to write. My original runlatch code would set it on every exception entry even though most of the time this was not required. It would also continually set it in the idle loop, which is an issue on an SMT capable processor. Now we cache the runlatch value in a threadinfo bit, and only check for it in decrementer and hardware interrupt exceptions as well as the idle loop. Boot on POWER3, POWER5 and iseries, and compile tested on pmac32. Signed-off-by:
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R Sharada authored
native_hpte_clear has a spinlock recursion problem with the native_tlbie_lock being called twice, once in native_hpte_clear() and once within tlbie(). Fix the problem by changing the call to tlbie() in native_hpte_clear() to __tlbie(). It still supports only 4k pages for now. Signed-off-by:
R Sharada <sharada@in.ibm.com> Signed-off-by:
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Kelly Daly authored
Disable OProfile in Kconfig for iSeries to prevent hangs. OProfile was not originally intended to work with legacy iSeries. Signed-off-by:
Kelly Daly <kelly@au.ibm.com> Signed-off-by:
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Kumar Gala authored
On the 83xx platform to ensure the PCI inbound memory is handled properly we have to turn on coherency for all pages in the MMU. Otherwise we see corruption if inbound "prefetching/streaming" is enabled on the PCI controller. Signed-off-by:
Randy Vinson <rvinson@mvista.com> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Alan Curry authored
altivec_unavailable_exception is called without setting r3... it looks like the r3 that actually gets passed in as struct pt_regs *regs is the undisturbed value of r3 at the time the altivec instruction was encountered. The user actually gets to choose the pt_regs printed in the Oops! This fixes the oops by passing the correct pt_regs pointer to altivec_unavailable_exception. Signed-off-by:
Alan Curry <pacman@TheWorld.com> Signed-off-by:
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Haren Myneni authored
The panic CPU is waiting forever due to some large timeout value if some CPU is not responding to an IPI. This patch fixes the problem - the maximum waiting period will be 10 seconds and then the kdump boot will go ahead. Signed-off-by:
Haren Myneni <haren@us.ibm.com> Signed-off-by:
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Olaf Hering authored
Fix up xmon compilation after the last change. Remove lots of dead code, all the pmac and chrp support is in arch/powerpc Signed-off-by:
Olaf Hering <olh@suse.de> Signed-off-by:
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Michael Ellerman authored
For kexec we need to know the size of the MMU hash table. Currently we calculate the size once in the htab code, and then twice more in the kexec code, once using htab_hash_mask and once using ppc64_pft_size. On some machines the ppc64_pft_size calculation is broken because ppc64_pft_size is not set. So we need to fix the second calculation, but better still we should just calculate the size once and use it everywhere else. Tested on Power5 LPAR, Power4 non-LPAR and Power3. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Richard Lucassen authored
The most usable number of ifb devices is 2. Change the default to 2. Signed-off-by:
Richard Lucassen <spamtrap@lucassen.org> Signed-off-by:
Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Herbert Xu authored
We should use the TOS because it's one of the routing keys. It also means that we update the correct routing cache entry when PMTU occurs. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Jamal Hadi Salim authored
When you turn off ARP on a netdevice then the first packet always goes out with a dstMAC of all zeroes. This is because the first packet is used to resolve ARP entries. Even though the ARP entry may be resolved (I tried by setting a static ARP entry for a host i was pinging from), it gets overwritten by virtue of having the netdevice disabling ARP. Subsequent packets go out fine with correct dstMAC address (which may be why people have ignored reporting this issue). To cut the story short: the culprit code is in net/ethernet/eth.c::eth_header() ---- /* * Anyway, the loopback-device should never use this function... */ if (dev->flags & (IFF_LOOPBACK|IFF_NOARP)) { memset(eth->h_dest, 0, dev->addr_len); return ETH_HLEN; } if(daddr) { memcpy(eth->h_dest,daddr,dev->addr_len); return ETH_HLEN; } ---- Note how the h_dest is being reset when device has IFF_NOARP. As a note: All devices including loopback pass a daddr. loopback in fact passes a 0 all the time ;-> This means i can delete the check totaly or i can remove the IFF_NOARP Alexey says: -------------------- I think, it was me who did this crap. It was so long ago I do not remember why it was made. I remember some troubles with dummy device. It tried to resolve addresses, apparently, without success and generated errors instead of blackholing. I think the problem was eventually solved at neighbour level. After some thinking I suspect the deletion of this chunk could change behaviour of some parts which do not use neighbour cache f.e. packet socket. I think safer approach would be to move this chunk after if (daddr). And the possibility to remove this completely could be analyzed later. -------------------- Patch updated with Alexey's safer suggestions. Signed-off-by:Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by:
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Herbert Xu authored
We often just do an atomic_dec(&x->refcnt) on an xfrm_state object because we know there is more than 1 reference remaining and thus we can elide the heavier xfrm_state_put() call. Do this behind an inline function called __xfrm_state_put() so that is more obvious and also to allow us to more cleanly add refcount debugging later. Signed-off-by:
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Suresh Bhogavilli authored
When garbage collecting route cache entries of multipath routes in rt_garbage_collect(), entries were deleted from the hash bucket 'i' while holding a spin lock on bucket 'k' resulting in a system hang. Delete entries, if any, from bucket 'k' instead. Signed-off-by:
Suresh Bhogavilli <sbhogavilli@verisign.com> Signed-off-by:
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