- 18 3月, 2008 7 次提交
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git://git.kernel.dk/linux-2.6-block由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "unexport bio_{,un}map_user" relay: fix subbuf_splice_actor() adding too many pages The ps2esdi driver was marked as BROKEN more than two years ago due to being
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6由 Linus Torvalds 提交于
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/ati_pcigart: fix the PCIGART to use drm_pci to allocate GART table. drm/radeon: fixup RV550 chip family drm/via: attempt again to stabilise the AGP DMA command submission. drm: Fix race that can lockup the kernel
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由 Mark Lord 提交于
This fixes a 2.6.25 regression reported by Alex Chiang. Invoke pciehp_enable_slot() at startup only when pciehp_force=1. Some HP equipment apparently cannot cope with it otherwise. This restores the (previously working) 2.6.24 behaviour here, while allowing machines that need a kick to use pciehp_force=1. This was the original design back in October 2007, but Kristen suggested we try without it first: Kristen Carlson Accardi wrote: >I think it would be ok to try allowing the slot to be enabled when not >using pciehp_force mode. We can wrap it later if it proves to break things This ended up breaking one of Alex's setups, so it's time to put the wrapper back in now. Signed-off-by: NMark Lord <mlord@pobox.com> Acked-by: NAlex Chiang <achiang@hp.com> Acked-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jens Axboe 提交于
Outside users like asmlib uses the mapping functions. API wise, the export is definitely sane. It's a better idea to keep this export than to require external users to open-code this piece of code instead. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev由 Linus Torvalds 提交于
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ahci: Add Marvell 6121 SATA support pata_ali: use atapi_cmd_type() to determine cmd type instead of transfer size ahci: implement skip_host_reset parameter ahci: request all PCI BARs devres: implement pcim_iomap_regions_request_all() libata-acpi: improve dock event handling
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: virtio: fix race in enable_cb virtio: Enable netpoll interface for netconsole logging virtio: handle > 2 billion page balloon targets virtio: Fix sysfs bits to have proper block symlink virtio: Use spin_lock_irqsave/restore for virtio-pci
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由 Al Viro 提交于
oops and fs corruption; the latter can happen even on valid fs in case of oom. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 17 3月, 2008 19 次提交
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由 Jose Alberto Reguero 提交于
Signed-off-by: NJose Alberto Reguero <jareguero@telefonica.net> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Tejun Heo 提交于
pata_ali was using qc->nbytes to determine whether a command is data transfer type or not. As now qc->nbytes can be extended by padding and draining buffers, these tests are not useful anymore. Use atapi_cmd_type() instead. Signed-off-by: NTejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Tejun Heo 提交于
Under certain circumstances (SSP turned off by the BIOS) and for debugging purposes, skipping global controller reset is helpful. Add a kernel parameter for it. Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Tejun Heo 提交于
ahci is often implemented with accompanying SFF compatible interface and legacy IDE driver may attach to the legacy IO ports when the controller is already claimed by ahci and vice-versa. This patch makes ahci use pcim_iomap_regions_request_all() so that all IO regions are claimed on attach. Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Tejun Heo 提交于
Some drivers need to reserve all PCI BARs to prevent other drivers misusing unoccupied BARs. pcim_iomap_regions_request_all() requests all BARs and iomap specified BARs. Signed-off-by: NTejun Heo <htejun@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Tejun Heo 提交于
Improve ACPI hotplug handling such that dock event is handled properly. * Register handlers for dock events. * Directly detach device on EJECT_REQUEST instead of signaling hotplug event. This prevents libata from accessing severed controller and/or device. * While at it, use named constants for ACPI events and move uevent signaling inside host lock. Original patch and testing by Holger Macht. Signed-off-by: NTejun Heo <htejun@gmail.com> Cc: Holger Macht <hmacht@suse.de> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Christian Borntraeger 提交于
There is a race in virtio_net, dealing with disabling/enabling the callback. I saw the following oops: kernel BUG at /space/kvm/drivers/virtio/virtio_ring.c:218! illegal operation: 0001 [#1] SMP Modules linked in: sunrpc dm_mod CPU: 2 Not tainted 2.6.25-rc1zlive-host-10623-gd358142-dirty #99 Process swapper (pid: 0, task: 000000000f85a610, ksp: 000000000f873c60) Krnl PSW : 0404300180000000 00000000002b81a6 (vring_disable_cb+0x16/0x20) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:3 PM:0 EA:3 Krnl GPRS: 0000000000000001 0000000000000001 0000000010005800 0000000000000001 000000000f3a0900 000000000f85a610 0000000000000000 0000000000000000 0000000000000000 000000000f870000 0000000000000000 0000000000001237 000000000f3a0920 000000000010ff74 00000000002846f6 000000000fa0bcd8 Krnl Code: 00000000002b819a: a7110001 tmll %r1,1 00000000002b819e: a7840004 brc 8,2b81a6 00000000002b81a2: a7f40001 brc 15,2b81a4 >00000000002b81a6: a51b0001 oill %r1,1 00000000002b81aa: 40102000 sth %r1,0(%r2) 00000000002b81ae: 07fe bcr 15,%r14 00000000002b81b0: eb7ff0380024 stmg %r7,%r15,56(%r15) 00000000002b81b6: a7f13e00 tmll %r15,15872 Call Trace: ([<000000000fa0bcd0>] 0xfa0bcd0) [<00000000002b8350>] vring_interrupt+0x5c/0x6c [<000000000010ab08>] do_extint+0xb8/0xf0 [<0000000000110716>] ext_no_vtime+0x16/0x1a [<0000000000107e72>] cpu_idle+0x1c2/0x1e0 The problem can be triggered with a high amount of host->guest traffic. I think its the following race: poll says netif_rx_complete poll calls enable_cb enable_cb opens the interrupt mask a new packet comes, an interrupt is triggered----\ enable_cb sees that there is more work | enable_cb disables the interrupt | . V . interrupt is delivered . skb_recv_done does atomic napi test, ok some waiting disable_cb is called->check fails->bang! . poll would do napi check poll would do disable_cb The fix is to let enable_cb not disable the interrupt again, but expect the caller to do the cleanup if it returns false. In that case, the interrupt is only disabled, if the napi test_set_bit was successful. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (cleaned up doco)
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由 Amit Shah 提交于
Add a new poll_controller handler that the netpoll interface needs. This enables netconsole logging from a kvm guest over the virtio net interface. Signed-off-by: NAmit Shah <amitshah@gmx.net> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
If the host asks for a huge target towards_target() can overflow, and we up oops as we try to release more pages than we have. The simple fix is to use a 64-bit value. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jeremy Katz 提交于
Fix up so that the virtio_blk devices in sysfs link correctly to their block device. This then allows them to be detected by hal, etc Signed-off-by: NJeremy Katz <katzj@redhat.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Anthony Liguori 提交于
virtio-pci acquires its spin lock in an interrupt context so it's necessary to use spin_lock_irqsave/restore variants. This patch fixes guest SMP when using virtio devices in KVM. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jens Axboe 提交于
If subbuf_pages was larger than the max number of pages the pipe buffer will hold, subbuf_splice_actor() would happily go beyond the array size. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Adrian Bunk 提交于
no longer working for some time. A driver that had been marked as BROKEN for such a long time seems to be unlikely to be revived in the forseeable future. But if anyone wants to ever revive this driver, the code is still present in the older kernel releases. Signed-off-by: NAdrian Bunk <bunk@kernel.org> Acked-by: NAlan Cox <alan@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Dave Airlie 提交于
This fixes a problem on 64-bit with 4GB with ATI RS690 chipsets. It makes sure the pcigart table is allocated in coherent memory for DMA operations. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Alex Deucher 提交于
This fixes up the RV550 chips which are based on RV515, not RV530. It also adds another RS690 PCI ID. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Thomas Hellstrom 提交于
It's worth remembering that all new bright ideas on how to make this command reader work properly and according to docs will probably fail :( Bring in some old code. Also allow a larger SG-DMA download stride, and remove unnecessary waits for command regulators pauses. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Mike Isely 提交于
The i915_vblank_swap() function schedules an automatic buffer swap upon receipt of the vertical sync interrupt. Such an operation is lengthy so it can't be allowed to happen in normal interrupt context, thus the DRM implements this by scheduling the work in a kernel softirq-scheduled tasklet. In order for the buffer swap to work safely, the DRM's central lock must be taken, via a call to drm_lock_take() located in drivers/char/drm/drm_irq.c within the function drm_locked_tasklet_func(). The lock-taking logic uses a non-interrupt-blocking spinlock to implement the manipulations needed to take the lock. This semantic would be safe if all attempts to use the spinlock only happen from process context. However this buffer swap happens from softirq context which is really a form of interrupt context. Thus we have an unsafe situation, in that drm_locked_tasklet_func() can block on a spinlock already taken by a thread in process context which will never get scheduled again because of the blocked softirq tasklet. This wedges the kernel hard. To trigger this bug, run a dual-head cloned mode configuration which uses the i915 drm, then execute an opengl application which synchronizes buffer swaps against the vertical sync interrupt. In my testing, a lockup always results after running anywhere from 5 minutes to an hour and a half. I believe dual-head is needed to really trigger the problem because then the vertical sync interrupt handling is no longer predictable (due to being interrupt-sourced from two different heads running at different speeds). This raises the probability of the tasklet trying to run while the userspace DRI is doing things to the GPU (and manipulating the DRM lock). The fix is to change the relevant spinlock semantics to be the interrupt-blocking form. After this change I am no longer able to trigger the lockup; the longest test run so far was 20 hours (test stopped after that point). Note: I have examined the places where this spinlock is being employed; all are reasonably short bounded sequences and should be suitable for interrupts being blocked without impacting overall kernel interrupt response latency. Signed-off-by: NMike Isely <isely@pobox.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6由 Linus Torvalds 提交于
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: [PARISC] make ptr_to_pide() static [PARISC] head.S: section mismatch fixes [PARISC] add back Crestone Peak cpu [PARISC] futex: special case cmpxchg NULL in kernel space [PARISC] clean up show_stack [PARISC] add pa8900 CPUs to hardware inventory [PARISC] clean up include/asm-parisc/elf.h [PARISC] move defconfig to arch/parisc/configs/ [PARISC] add back AD1889 MAINTAINERS entry [PARISC] pdc_console: fix bizarre panic on boot [PARISC] dump_stack in show_regs [PARISC] pdc_stable: fix compile errors [PARISC] remove unused pdc_iodc_printf function [PARISC] bump __NR_syscalls [PARISC] unbreak pgalloc.h [PARISC] move VMALLOC_* definitions to fixmap.h [PARISC] wire up timerfd syscalls [PARISC] remove old timerfd syscall
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- 16 3月, 2008 14 次提交
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由 FUJITA Tomonori 提交于
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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由 Helge Deller 提交于
- move boot_args[] into the init section - move $global$ into the read_mostly section - fix the following two section mismatches: WARNING: vmlinux.o(.text+0x9c): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20') WARNING: vmlinux.o(.text+0xa0): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20') Signed-off-by: NHelge Deller <deller@gmx.de> SIgned-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Kyle McMartin 提交于
Crestone Peak Slow is the 800MHz PA-8800 cpu in the C8000. 0x88B is probably the Crestone Peak Fast. Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Kyle McMartin 提交于
Commit a0c1e907 added code to futex.c to detect whether futex_atomic_cmpxchg_inatomic was implemented at run time: + curval = cmpxchg_futex_value_locked(NULL, 0, 0); + if (curval == -EFAULT) + futex_cmpxchg_enabled = 1; This is bogus on parisc, since page zero in kernel virtual space is the gateway page for syscall entry, and should not be read from the kernel. (That, and we really don't like the kernel faulting on its own address space...) Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Kyle McMartin 提交于
When we show_regs, we obviously have a struct pt_regs of the calling frame. Use these in show_stack so we don't have the entire bogus call trace up to the show_stack call. Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 James Bottomley 提交于
This patch adds the known pa8900 CPUs to the inventory list and removes the Crestone Peak one which apparently never escaped into the wild. Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Randolph Chung 提交于
Cleanup some cruft. No functionality changes. Signed-off-by: NRandolph Chung <tausq@parisc-linux.org> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Adrian Bunk 提交于
This patch moves the default parisc defconfig to arch/parisc/configs/generic_defconfig where it belongs and selects it as the default defconfig through KBUILD_DEFCONFIG. Signed-off-by: NAdrian Bunk <adrian.bunk@movial.fi> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Thibaut VARENE 提交于
Signed-off-by: NThibaut VARENE <T-Bone@parisc-linux.org> Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
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由 Kyle McMartin 提交于
Commit 721fdf34 introduced a subtle bug by accidently removing the "static" from iodc_dbuf. This resulted in, what appeared to be, a trap without *current set to a task. Probably the result of a trap in real mode while calling firmware. Also do other misc clean ups. Since the only input from firmware is non blocking, share iodc_dbuf between input and output, and spinlock the only callers. Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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由 Kyle McMartin 提交于
Originally, show_stack was used in BUG() output. However, a recent commit changed it to print register state (no idea what that's supposed to help, really...) and parisc was missing a backtrace because of it. Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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由 Joel Soete 提交于
Signed-off-by: NJoel Soete <rubisher@scarlet.be> Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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由 Kyle McMartin 提交于
Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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由 Kyle McMartin 提交于
oops, forgot this in the previous commit. Signed-off-by: NKyle McMartin <kyle@parisc-linux.org>
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