- 22 Mar, 2007 1 commit
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Mohan Kumar M authored
kexec invokes plpar_hcall hypervisor call in real mode. plpar_hcall refers to per cpu variables for accounting hypervisor statistics. These variables may not be in the RMO region, so accesses to them in real mode may result in a data storage exception. This fixes this problem by using a new plpar_hcall_raw function which does not update the hypervisor call statistics. Thanks to Anton for suggesting this idea. Signed-off-by:
Mohan Kumar M <mohan@in.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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- 16 Mar, 2007 2 commits
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Mathieu Desnoyers authored
Fix atomicity of TIF update in flush_thread() for powerpc Fixes it correctly with *_ti_thread_flag. Race : parent process executing : sys_ptrace() (lock_kernel()) (ptrace_get_task_struct(pid)) arch_ptrace() ptrace_detach() ptrace_disable(child); clear_singlestep(child); clear_tsk_thread_flag(child, TIF_SINGLESTEP); (which clears the TIF_SINGLESTEP flag atomically from a different process) (put_task_struct(child)) (unlock_kernel()) And at the same time, in the child process : sys_execve() do_execve() search_binary_handler() load_elf_binary() flush_old_exec() flush_thread() doing a non-atomic thread flag update Applies on 2.6.20. Signed-off-by:Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by:
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Linus Torvalds authored
Signed-off-by:Linus Torvalds <torvalds@linux-foundation.org>
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- 15 Mar, 2007 11 commits
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Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: natsemi: Avoid IntrStatus lossage if RX state machine resets. natsemi: Fix NAPI for interrupt sharing natsemi: Consistently use interrupt enable/disable functions NetXen: Fix softlockup seen during hardware access NetXen: Bug fix for Jumbo frames on XG card skge: set mac address bonding fix
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Alan Stern authored
This patch (as869) reinstates the mutual exclusion between sysfs attribute method calls and attribute unregistration. The previously-reported deadlocks have been fixed, and this exclusion is by far the simplest way to avoid races during driver unbinding. The check for orphaned read-buffers has been moved down slightly, so that the remainder of a partially-read buffer will still be available to userspace even after the attribute has been unregistered. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Cc: Hugh Dickins <hugh@veritas.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Oliver Neukum <oneukum@suse.de> Signed-off-by:
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Alan Stern authored
This patch (as868) adds a helper routine for device drivers that need to set up a callback to perform some action in a different process's context. This is intended for use by attribute methods that want to unregister themselves or their parent device. Attribute method calls are mutually exclusive with unregistration, so such actions cannot be taken directly. Two attribute methods are converted to use the new helper routine: one for SCSI device deletion and one for System/390 ccwgroup devices. Signed-off-by:
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Linus Torvalds authored
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid: HID: zeroing of bytes in output fields is bogus HID: allocate hid_parser in a proper way
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broonie@sirena.org.uk authored
This patch fixes the poll routine for the natsemi driver so that if the driver detects an RX state machine lockup then no interrupts will be lost while the driver recovers from that. Signed-Off-By:
Mark Brown <broonie@sirena.org.uk> Signed-off-by:
Jeff Garzik <jeff@garzik.org>
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broonie@sirena.org.uk authored
The interrupt status register for the natsemi chips is clear on read and was read unconditionally from both the interrupt and from the NAPI poll routine, meaning that if the interrupt service routine was called (for example, due to a shared interrupt) while a NAPI poll was scheduled interrupts could be missed. This patch fixes that by ensuring that the interrupt status register is only read by the interrupt handler when interrupts are enabled from the chip. It also reverts a workaround for this problem from the netpoll hook and improves the trace for interrupt events. Thanks to Sergei Shtylyov <sshtylyov@ru.mvista.com> for spotting the issue, Mark Huth <mhuth@mvista.com> for a simpler method and Simon Blake <simon@citylink.co.nz> for testing resources. Signed-Off-By:
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broonie@sirena.org.uk authored
The natsemi drivers include functions for enabling and disabling interrupts from the chip but these are not used in all code paths. This patch changes the code paths that touch the interrupt enable register to use the functions. In all cases this adds an extra PCI read to post the operation but since none of these are in fast paths this shouldn't be too much of a problem. Signed-Off-By:
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Linsys Contractor Mithlesh Thukral authored
NetXen: This will fix a softlock seen on some machines. The reason was too much time was spent waiting for hardware access to go through. Signed-off by: Mithlesh Thukral <mithlesh@netxen.com> Signed-off-by: -
Linsys Contractor Mithlesh Thukral authored
NetXen: Set the MTU for the right port depending upon the port number for XG cards. Signed-off by: Mithlesh Thukral <mithlesh@netxen.com> Signed-off-by: -
Stephen Hemminger authored
When bonding does fail over it calls set_mac_address. When this happens as the result of another port going down, the phy_mutex that is common to both ports is held, so it deadlocks. Setting the address doesn't need to do anything that needs the phy_mutex, it already has the RTNL to protect against other admin actions. This change just disables the receiver to avoid any hardware confusion while address is changing. Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Linus Torvalds authored
This reverts commit 6ebf622b and replaces it with one that actually works. Signed-off-by:
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- 14 Mar, 2007 26 commits
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Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/mfasheh/ocfs2: ocfs2_dlm: Add missing locks in dlm_empty_lockres ocfs2_dlm: Missing get/put lockres in dlm_run_purge_lockres configfs: add missing mutex_unlock() ocfs2: add some missing address space callbacks ocfs2: Concurrent access of o2hb_region->hr_task was not locked ocfs2: Proper cleanup in case of error in ocfs2_register_hb_callbacks()
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] i8xx TCO driver - mark for removal
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Al Viro authored
Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Al Viro authored
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Al Viro authored
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Al Viro authored
NB: driver is choke-full of code that will break on big-endian; as long as the hardware is onboard-only we can live with that, but sooner or later that'll need fixing. Signed-off-by:
Jeff Garzik <jgarzik@pobox.com> Signed-off-by:
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
Signed-off-by:
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by:
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
Signed-off-by:
William Irwin <wli@holomorphy.com> Signed-off-by:
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Al Viro authored
Signed-off-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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Al Viro authored
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Al Viro authored
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Al Viro authored
Andi had removed a bunch of those, but one more had creeped in... Signed-off-by:
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
It's bool and it depends on IDE => should depend on IDE=y Signed-off-by:
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Al Viro authored
not needed and actually breaks build on frv, while we are at it Signed-off-by:
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Al Viro authored
... instead of trying to duplicate its bits Signed-off-by:
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Al Viro authored
method gets u64, not dma_addr_t Signed-off-by:
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Al Viro authored
and no, it's not the case of "let's pull bits from underlying architecture" Signed-off-by:
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