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* [IPV4/IPV6]: Always wait for IPSEC SA resolution in socket contexts.David S. Miller2007-02-08
| | | | | | | | | | Do this even for non-blocking sockets. This avoids the silly -EAGAIN that applications can see now, even for non-blocking sockets in some cases (f.e. connect()). With help from Venkat Tekkirala. Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: remove tcp header from tcp_v4_check (take #2)Frederik Deweerdt2007-02-08
| | | | | | | | | | | The tcphdr struct passed to tcp_v4_check is not used, the following patch removes it from the parameter list. This adds the netfilter modifications missing in the patch I sent for rc3-mm1. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ROUTE: Do not route packets to link-local address on other device.YOSHIFUJI Hideaki2007-02-08
| | | | | | | With help from Wei Dong <weid@np.css.fujitsu.com>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLINK]: Don't BUG on undersized allocationsPatrick McHardy2007-02-08
| | | | | | | | | | | | | | | Currently netlink users BUG when the allocated skb for an event notification is undersized. While this is certainly a kernel bug, its not critical and crashing the kernel is too drastic, especially when considering that these errors have appeared multiple times in the past and it BUGs even if no listeners are present. This patch replaces BUG by WARN_ON and changes the notification functions to inform potential listeners of undersized allocations using a unique error code (EMSGSIZE). Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET_SCHED] sch_prio: class statistics printing enabledJarek Poplawski2007-02-08
| | | | | | | | | | This patch adds a dump_stats callback to enable printing of basic statistics of prio classes. (With help of Patrick McHardy). Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2007-02-08
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/mfasheh/ocfs2: (22 commits) configfs: Zero terminate data in configfs attribute writes. [PATCH] ocfs2 heartbeat: clean up bio submission code ocfs2: introduce sc->sc_send_lock to protect outbound outbound messages [PATCH] ocfs2: drop INET from Kconfig, not needed ocfs2_dlm: Add timeout to dlm join domain ocfs2_dlm: Silence some messages during join domain ocfs2_dlm: disallow a domain join if node maps mismatch ocfs2_dlm: Ensure correct ordering of set/clear refmap bit on lockres ocfs2: Binds listener to the configured ip address ocfs2_dlm: Calling post handler function in assert master handler ocfs2: Added post handler callable function in o2net message handler ocfs2_dlm: Cookies in locks not being printed correctly in error messages ocfs2_dlm: Silence a failed convert ocfs2_dlm: wake up sleepers on the lockres waitqueue ocfs2_dlm: Dlm dispatch was stopping too early ocfs2_dlm: Drop inflight refmap even if no locks found on the lockres ocfs2_dlm: Flush dlm workqueue before starting to migrate ocfs2_dlm: Fix migrate lockres handler queue scanning ocfs2_dlm: Make dlmunlock() wait for migration to complete ocfs2_dlm: Fixes race between migrate and dirty ...
| * configfs: Zero terminate data in configfs attribute writes.Joel Becker2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Attributes in configfs are text files. As such, most handlers expect to be able to call functions like simple_strtoul() without checking the bounds of the buffer. Change the call to zero terminate the buffer before calling the client's ->store() method. This does reduce the attribute size from PAGE_SIZE to PAGE_SIZE-1. Also, change get_zeroed_page() to alloc_page(), as we are handling the termination. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * [PATCH] ocfs2 heartbeat: clean up bio submission codePhilipp Reisner2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As was already pointed out Mathieu Avila on Thu, 07 Sep 2006 03:15:25 -0700 that OCFS2 is expecting bio_add_page() to add pages to BIOs in an easily predictable manner. That is not true, especially for devices with own merge_bvec_fn(). Therefore OCFS2's heartbeat code is very likely to fail on such devices. Move the bio_put() call into the bio's bi_end_io() function. This makes the whole idea of trying to predict the behaviour of bio_add_page() unnecessary. Removed compute_max_sectors() and o2hb_compute_request_limits(). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2: introduce sc->sc_send_lock to protect outbound outbound messagesZhen Wei2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When there is a lot of multithreaded I/O usage, two threads can collide while sending out a message to the other nodes. This is due to the lack of locking between threads while sending out the messages. When a connected TCP send(), sendto(), or sendmsg() arrives in the Linux kernel, it eventually comes through tcp_sendmsg(). tcp_sendmsg() protects itself by acquiring a lock at invocation by calling lock_sock(). tcp_sendmsg() then loops over the buffers in the iovec, allocating associated sk_buff's and cache pages for use in the actual send. As it does so, it pushes the data out to tcp for actual transmission. However, if one of those allocation fails (because a large number of large sends is being processed, for example), it must wait for memory to become available. It does so by jumping to wait_for_sndbuf or wait_for_memory, both of which eventually cause a call to sk_stream_wait_memory(). sk_stream_wait_memory() contains a code path that calls sk_wait_event(). Finally, sk_wait_event() contains the call to release_sock(). The following patch adds a lock to the socket container in order to properly serialize outbound requests. From: Zhen Wei <zwei@novell.com> Acked-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * [PATCH] ocfs2: drop INET from Kconfig, not neededRandy Dunlap2007-02-07
| | | | | | | | | | | | | | OCFS2: drop 'depends on INET' since local mounts are now allowed. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Add timeout to dlm join domainSunil Mushran2007-02-07
| | | | | | | | | | | | | | | | | | | | Currently the ocfs2 dlm has no timeout during dlm join domain. While this is not a problem in normal operation, this does become an issue if, say, the other node is refusing to let the node join the domain because of a stuck recovery. This patch adds a 90 sec timeout. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Silence some messages during join domainSunil Mushran2007-02-07
| | | | | | | | | | | | | | | | These messages can easily be activated using the mlog infrastructure and don't need to be enabled by default. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: disallow a domain join if node maps mismatchSrinivas Eeda2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a small window where a joining node may not see the node(s) that just died but are still part of the domain. To fix this, we must disallow join requests if the joining node has a different node map. A new field node_map is added to dlm_query_join_request to send the current nodes nodemap along with join request. On the receiving end the nodes that are part of the cluster verifies if this new node sees all the nodes that are still part of the cluster. They disallow the join if the maps mismatch. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Ensure correct ordering of set/clear refmap bit on lockresSunil Mushran2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | Eventhough the set refmap bit message is sent before the clear refmap message, currently there is no guarentee that the set message will be handled before the clear. This patch prevents the clear refmap to be processed while the node is sending assert master messages to other nodes. (The set refmap message is sent as a response to the assert master request). Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2: Binds listener to the configured ip addressSunil Mushran2007-02-07
| | | | | | | | | | | | | | | | This patch binds the o2net listener to the configured ip address instead of INADDR_ANY for security. Fixes oss.oracle.com bugzilla#814. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Calling post handler function in assert master handlerKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | This patch prevents the dlm from sending the clear refmap message before the set refmap. We use the newly created post function handler routine to accomplish the task. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2: Added post handler callable function in o2net message handlerKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently o2net allows one handler function per message type. This patch adds the ability to call another function to be called after the handler has returned the message to the other node. Handlers are now given the option of returning a context (in the form of a void **) which will be passed back into the post message handler function. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Cookies in locks not being printed correctly in error messagesKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | The dlm encodes the node number and a sequence number in the lock cookie. It also stores the cookie in the lockres in the big endian format to avoid swapping 8 bytes on each lock request. The bug here was that it was assuming the cookie to be in the cpu format when decoding it for printing the error message. This patch swaps the bytes before the print. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Silence a failed convertKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | When the lockres is in migrate or recovery state, all convert requests are denied with the appropriate error status that is handled on the requester node. This patch silences the erroneous error message printed on the master node. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: wake up sleepers on the lockres waitqueueKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | The dlm was not waking up threads waiting on the lockres wait queue, waiting for the lockres to be no longer be in the DLM_LOCK_RES_IN_PROGRESS and the DLM_LOCK_RES_MIGRATING states. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Dlm dispatch was stopping too earlyKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | dlm_dispatch_work was not processing the queued up tasks at the first sign of the node leaving the domain leading to not only incompleted tasks but also a mismatch in the dlm refcnt. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Drop inflight refmap even if no locks found on the lockresKurt Hackel2007-02-07
| | | | | | | | | | | | Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Flush dlm workqueue before starting to migrateKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | This is to prevent the condition in which a previously queued up assert master asserts after we start the migration. Now migration ensures the workqueue is flushed before proceeding with migrating the lock to another node. This condition is typically encountered during parallel umounts. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Fix migrate lockres handler queue scanningKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | The migrate lockres handler was only searching for its lock on migrated lockres on the expected queue. This could be problematic as the new master could have also issued a convert request during the migration and thus moved the lock to the convert queue. We now search for the lock on all three queues. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Make dlmunlock() wait for migration to completeKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | dlmunlock() was not waiting for migration to complete before releasing locks on locally mastered locks. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: Fixes race between migrate and dirtyKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | dlmthread was removing lockres' from the dirty list and resetting the dirty flag before shuffling the list. This patch retains the dirty state flag until the lists are shuffled. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * [PATCH] fs/ocfs2/dlm/: make functions staticAdrian Bunk2007-02-07
| | | | | | | | | | | | | | This patch makes some needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * ocfs2_dlm: fix cluster-wide refcounting of lock resourcesKurt Hackel2007-02-07
| | | | | | | | | | | | | | | | | | | | | | This was previously broken and migration of some locks had to be temporarily disabled. We use a new (and backward-incompatible) set of network messages to account for all references to a lock resources held across the cluster. once these are all freed, the master node may then free the lock resource memory once its local references are dropped. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2007-02-08
|\ \ | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: Revert "Driver core: convert SPI code to use struct device"
| * | Revert "Driver core: convert SPI code to use struct device"Greg Kroah-Hartman2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 2943ecf2ed32632473c06f1975db47a7aa98c10f. This should go through the SPI maintainer, it was my fault that it did not. Especially as it conflicts with other patches he has pending. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2007-02-08
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: (116 commits) [POWERPC] Add export of vgacon_remap_base [POWERPC] Remove bogus comment about page_is_ram [POWERPC] windfarm: don't die on suspend thread signal [POWERPC] Fix comment in kernel/irq.c [POWERPC] ppc: Fix booke watchdog initialization [POWERPC] PPC: Use ARRAY_SIZE macro when appropriate [POWERPC] Use ARRAY_SIZE macro when appropriate [POWERPC] Fix ppc64's writing to struct file_operations [POWERPC] ppc: use syslog macro for the printk log level [POWERPC] ppc: cs4218_tdm remove extra brace [POWERPC] Add mpc52xx/lite5200 PCI support [POWERPC] Only use H_BULK_REMOVE if the firmware supports it [POWERPC] Fixup error handling when emulating a floating point instruction [POWERPC] Enable interrupts if we are doing fp math emulation [POWERPC] Added kprobes support to ppc32 [POWERPC] Make pSeries use the H_BULK_REMOVE hypervisor call [POWERPC] Clear RI bit in MSR before restoring r13 when returning to userspace [POWERPC] Fix performance monitor exception [POWERPC] Compile fixes for arch/powerpc dcr code [POWERPC] Maple: use mmio nvram ...
| * | | [POWERPC] Add export of vgacon_remap_baseMathieu Desnoyers2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following macro : include/asm-powerpc/vga.h:#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base) is used by drivers/video/console/vgacon.c which can be compiled as a module (drivers/video/vga16fb.ko). Therefore, vgacon_remap_base should be exported. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Remove bogus comment about page_is_ramJohannes Berg2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/powerpc/mm/mem.c states that page_is_ram is called by the code that implements /dev/mem, which isn't true. Remove the comment. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] windfarm: don't die on suspend thread signalJohannes Berg2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the windfarm thread gets a suspend signal it will die instead of freezing. This fixes it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Fix comment in kernel/irq.cJohannes Berg2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel/irq.c contains a comment that speaks of -1 and -2 as interrupt numbers, but this is actually dependent on configuration options now. Replace by NO_IRQ and NO_IRQ_ENABLED. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] ppc: Fix booke watchdog initializationStefan Roese2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix two problems in the book-e watchdog driver. a) The 4xx default period was defined wrong b) Clear status before enabling the watchdog exception Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] PPC: Use ARRAY_SIZE macro when appropriateAhmed S. Darwish2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use ARRAY_SIZE macro already defined in linux/kernel.h Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@gate.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Use ARRAY_SIZE macro when appropriateAhmed S. Darwish2007-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use ARRAY_SIZE macro already defined in linux/kernel.h Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Fix ppc64's writing to struct file_operationsStephen Rothwell2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for marking file_operations as const. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] ppc: use syslog macro for the printk log levelRobert P. J. Day2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the appropriate logging macro for the priority level for that printk call. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] ppc: cs4218_tdm remove extra braceMariusz Kozlowski2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Add mpc52xx/lite5200 PCI supportGrant Likely2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | Merge branch 'for_paulus' of ↵Paul Mackerras2007-02-07
| |\ \ \ | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.21
| | * | | [POWERPC] Fixup error handling when emulating a floating point instructionKumar Gala2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we do full FP emulation its possible that we need to post a SIGFPE based on the results of the emulation. The previous code ignored this case completely. Additionally, the Soft_emulate_8xx case had two issues. One, we should never generate a SIGFPE since the code only does data movement. Second, we were interpreting the return codes incorrectly, it returns 0 on success, 1 on illop and -EFAULT on a data access error. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | [POWERPC] Enable interrupts if we are doing fp math emulationKumar Gala2007-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Anytime we are emulating an instruction we are going to be doing some form of get_user() to get the instruction image to decode. Since get_user() might sleep we need to ensure we have interrupts enabled or we might see something like: Debug: sleeping function called from invalid context at arch/powerpc/kernel/traps.c:697 in_atomic():0, irqs_disabled():1 Call Trace: [D6023EB0] [C0007F84] show_stack+0x58/0x174 (unreliable) [D6023EE0] [C0022C34] __might_sleep+0xbc/0xd0 [D6023EF0] [C000D158] program_check_exception+0x1d8/0x4fc [D6023F40] [C000E744] ret_from_except_full+0x0/0x4c --- Exception: 700 at 0x102a7100 LR = 0xdb9ef04 However, we want to ensure that interrupts are disabled when handling a trap exception that might be used for a kernel breakpoint. This is why ProgramCheck is marked as EXC_XFER_STD instead of EXC_XFER_EE. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | [POWERPC] Added kprobes support to ppc32Kumar Gala2007-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added kprobes to ppc32 platforms that have use single_step_exception. This excludes 4xx and anything Book-E since their debug mechanisms for single stepping are completely different. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * | | Merge branch 'linux-2.6'Paul Mackerras2007-02-06
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| * | | | | [POWERPC] Only use H_BULK_REMOVE if the firmware supports itPaul Mackerras2007-02-07
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous patch changing pSeries to use H_BULK_REMOVE broke the JS20 blade, where the firmware doesn't support H_BULK_REMOVE. This adds a firmware check so that on machines that don't have H_BULK_REMOVE, we just use the H_REMOVE call as before. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Make pSeries use the H_BULK_REMOVE hypervisor callPaul Mackerras2007-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | H_BULK_REMOVE lets us remove 4 entries from the MMU hash table with one hypervisor call. This uses it in pSeries_lpar_hpte_invalidate so we can tear down mappings with fewer hypervisor calls. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | | [POWERPC] Clear RI bit in MSR before restoring r13 when returning to userspacePaul Mackerras2007-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some instruction tracing tools use the RI (recoverable interrupt) bit in the MSR to indicate when it's safe to single-step. Currently we clear RI after restoring r13 when returning to userspace. However, if we single-step past the point where r13 is restored, we'll corrupt r13 in the exception entry code and not restore it. This moves the clearing of RI to just before r13 is restored so this doesn't happen. Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 06:48:02 -0500