- 26 Mar, 2006 7 commits
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James Bottomley authored
Currently, get_user_pages() returns fully coherent pages to the kernel for anything other than anonymous pages. This is a problem for things like fuse and the SCSI generic ioctl SG_IO which can potentially wish to do DMA to anonymous pages passed in by users. The fix is to add a new memory management API: flush_anon_page() which is used in get_user_pages() to make anonymous pages coherent. Signed-off-by:
James Bottomley <James.Bottomley@SteelEye.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Steven Rostedt authored
It has been discovered that the remove_proc_entry has a race in the removing of entries in the proc file system that are siblings. There's no protection around the traversing and removing of elements that belong in the same subdirectory. This subdirectory list is protected in other areas by the BKL. So the BKL was at first used to protect this area too, but unfortunately, remove_proc_entry may be called with spinlocks held. The BKL may schedule, so this was not a solution. The final solution was to add a new global spin lock to protect this list, called proc_subdir_lock. This lock now protects the list in remove_proc_entry, and I also went around looking for other areas that this list is modified and added this protection there too. Care must be taken since these locations call several functions that may also schedule. Since I don't see any location that these functions that modify the subdirectory list are called by interrupts, the irqsave/restore versions of the spin lock was _not_ used. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Ingo Molnar authored
Warn if free_irq() is called in IRQ context - free_irq() can execute /proc VFS work, which must not be done in IRQ context. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Ingo Molnar authored
free_irq() should not be executed from softirq context. Found by the lock validator. The fix is to push fd_free_irq() into keventd. The code validates fine with this patch applied. (akpm: this is revolting, but so is floppy.c) [akpm@osdl.org: added flush_scheduled_work()] Signed-off-by:
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-serial: [ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion [SERIAL] amba-pl010: Remove accessor macros [SERIAL] remove 8250_acpi (replaced by 8250_pnp and PNPACPI) [SERIAL] icom: select FW_LOADER
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Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3030/2: fix permission check in the obscur cmpxchg syscall [ARM] nommu: rename compressed/head.S symbols to a new style [ARM] select TLS_REG_EMUL and NEEDS_SYSCALL_FOR_CMPXCHG [ARM] nommu: Move hardware page table definitions to pgtable-hwdef.h [ARM] Move read of processor ID out of lookup_processor_type() [ARM] Fix typo in tlbflush.h [ARM] noMMU: removes TLB codes in nommu mode [ARM] noMMU: block sys_fork in nommu mode [ARM] 3399/1: Fix link problem when CONFIG_PRINTK is disabled [ARM] 3398/1: Fix the VFP registers loading/storing base address [ARM] 3397/1: AT91RM9200 Header update [ARM] 3385/1: Battery support for sharp zaurus sl-5500 (collie) [ARM] SMP: don't set cpu_*_map in smp_prepare_boot_cpu include/linux/clk.h is betraying its ARM origins [ARM] Move enable_irq and disable_irq to assembler.h [ARM] 3391/1: use PLAT8250_DEV_PLATFORM{,1} for platform device id instead of 0/1 -
Andi Kleen authored
Broken earlier by me by a x86-64 patch. The code was optimized away, but the compiler still complained about an undeclared function. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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- 25 Mar, 2006 33 commits
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Lennert Buytenhek authored
Patch from Lennert Buytenhek Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12]. (The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.) Signed-off-by:
Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Nicolas Pitre authored
Patch from Nicolas Pitre Quoting RMK: |pte_write() just says that the page _may_ be writable. It doesn't say |that the MMU is programmed to allow writes. If pte_dirty() doesn't |return true, that means that the page is _not_ writable from userspace. |If you write to it from kernel mode (without using put_user) you'll |bypass the MMU read-only protection and may end up writing to a page |owned by two separate processes. Signed-off-by:
Nicolas Pitre <nico@cam.org> Signed-off-by:
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Russell King authored
Fix merge conflict in arch/arm/mm/proc-xscale.S Signed-off-by: -
Malcolm Parsons authored
Patch from Malcolm Parsons Printking a backtrace requires printk, so disable backtrace code when printk is disabled. Without this patch, a kernel with CONFIG_PRINTK disabled does not link: arch/arm/lib/lib.a(backtrace.o): In function `c_backtrace': arch/arm/lib/backtrace.S:(.text+0x108): undefined reference to `printk' arch/arm/lib/backtrace.S:(.text+0x11c): undefined reference to `printk' arch/arm/lib/lib.a(backtrace.o):(.fixup+0x8): undefined reference to `printk' Signed-off-by:
Malcolm Parsons <malcolm.parsons@gmail.com> Signed-off-by:
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Catalin Marinas authored
Patch from Catalin Marinas The current VFP code corrupts the VFP registers (including the control ones) if more than one floating point application is executed at the same time. This patch fixes the updating of the load/store base addresses for the VFP registers. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Andrew Victor authored
Patch from Andrew Victor This patch updates the hardware header to include definitions for the Memory Controller registers. Signed-off-by:
Andrew Victor <andrew@sanpeople.com> Signed-off-by:
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Pavel Machek authored
Patch from Pavel Machek This adds support for battery reading on collie. Collie slowly charges battery even with charging disabled, so I did not yet enable fast charge. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Russell King authored
The recent addition of boot_cpu_init() implements the initialisation of the online, present and possible cpu maps for the boot CPU, so there is no reason to duplicate this in the architecture smp_prepare_boot_cpu() hook. Signed-off-by: -
Russell King authored
Remove unnecessary accessor macros, using readb/writel directly instead. Signed-off-by: -
David S. Miller authored
Don't rely on fixup_cpu_present_map() to do this as that function is about to be removed. Signed-off-by:David S. Miller <davem@davemloft.net>
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Todd Poynor authored
include/linux/clk.h is betraying its ARM origins. Signed-off-by:
Todd Poynor <tpoynor@mvista.com> Signed-off-by:
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Bjorn Helgaas authored
With the combination of PNPACPI and 8250_pnp, we no longer need 8250_acpi. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
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maximilian attems authored
The icom driver uses request_firmware() and thus needs to select FW_LOADER. Signed-off-by:
maximilian attems <maks@sternwelten.at> Signed-off-by:
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Linus Torvalds authored
It takes a size_t, not an int, as its third argument. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-currentLinus Torvalds authored
* 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: (22 commits) [PATCH] fix audit_init failure path [PATCH] EXPORT_SYMBOL patch for audit_log, audit_log_start, audit_log_end and audit_format [PATCH] sem2mutex: audit_netlink_sem [PATCH] simplify audit_free() locking [PATCH] Fix audit operators [PATCH] promiscuous mode [PATCH] Add tty to syscall audit records [PATCH] add/remove rule update [PATCH] audit string fields interface + consumer [PATCH] SE Linux audit events [PATCH] Minor cosmetic cleanups to the code moved into auditfilter.c [PATCH] Fix audit record filtering with !CONFIG_AUDITSYSCALL [PATCH] Fix IA64 success/failure indication in syscall auditing. [PATCH] Miscellaneous bug and warning fixes [PATCH] Capture selinux subject/object context information. [PATCH] Exclude messages by message type [PATCH] Collect more inode information during syscall processing. [PATCH] Pass dentry, not just name, in fsnotify creation hooks. [PATCH] Define new range of userspace messages. [PATCH] Filter rule comparators ... Fixed trivial conflict in security/selinux/hooks.c
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/aoe-2.6: [PATCH] aoe [3/3]: update version to 22 [PATCH] aoe [2/3]: don't request ATA device ID on ATA error [PATCH] aoe [1/3]: support multiple AoE listeners [PATCH] aoe: do not stop retransmit timer when device goes down [PATCH] aoe [8/8]: update driver version number [PATCH] aoe [7/8]: update driver compatibility string [PATCH] aoe [6/8]: update device information on last close [PATCH] aoe [5/8]: allow network interface migration on packet retransmit [PATCH] aoe [4/8]: use less confusing driver name [PATCH] aoe [3/8]: increase allowed outstanding packets [PATCH] aoe [2/8]: support dynamic resizing of AoE devices [PATCH] aoe [1/8]: zero packet data after skb allocation
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git://git.linux-nfs.org/pub/linux/nfs-2.6Linus Torvalds authored
* git://git.linux-nfs.org/pub/linux/nfs-2.6: (103 commits) SUNRPC,RPCSEC_GSS: spkm3--fix config dependencies SUNRPC,RPCSEC_GSS: spkm3: import contexts using NID_cast5_cbc LOCKD: Make nlmsvc_traverse_shares return void LOCKD: nlmsvc_traverse_blocks return is unused SUNRPC,RPCSEC_GSS: fix krb5 sequence numbers. NFSv4: Dont list system.nfs4_acl for filesystems that don't support it. SUNRPC,RPCSEC_GSS: remove unnecessary kmalloc of a checksum SUNRPC: Ensure rpc_call_async() always calls tk_ops->rpc_release() SUNRPC: Fix memory barriers for req->rq_received NFS: Fix a race in nfs_sync_inode() NFS: Clean up nfs_flush_list() NFS: Fix a race with PG_private and nfs_release_page() NFSv4: Ensure the callback daemon flushes signals SUNRPC: Fix a 'Busy inodes' error in rpc_pipefs NFS, NLM: Allow blocking locks to respect signals NFS: Make nfs_fhget() return appropriate error values NFSv4: Fix an oops in nfs4_fill_super lockd: blocks should hold a reference to the nlm_file NFSv4: SETCLIENTID_CONFIRM should handle NFS4ERR_DELAY/NFS4ERR_RESOURCE NFSv4: Send the delegation stateid for SETATTR calls ...
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart: [AGPGART] x86_64: Enable VIA AGP driver on x86-64 for VIA P4 chipsets [AGPGART] x86_64: Fix wrong PCI ID for ALI M1695 AGP bridge [AGPGART] ATI RS350 support. [AGPGART] Lots of CodingStyle/whitespace cleanups.
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Andi Kleen authored
Signed-off-by:
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Andi Kleen authored
DEBUG_KERNEL is often enabled just for sysrq, but this doesn't mean the user wants more heavyweight debugging information. Cc: jbeulich@novell.com Signed-off-by:
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Andi Kleen authored
Noticed by Andrew Morton. Signed-off-by:
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Andi Kleen authored
tcsh is not happy with the -9999 error code. Suggested by Ernie Petrides Signed-off-by:
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Andi Kleen authored
I got an oops on a dual core system because the lost tick handler called cpufreq_get() on core 1 and powernow tried to follow a NULL powernow_data[] pointer there. Initialize powernow_data for all cores of a CPU. Cc: Jacob Shin <jacob.shin@amd.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by:
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Andi Kleen authored
No need to restrict to power of two here. TBD needs more double checking Signed-off-by:
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Eric Dumazet authored
pfn_to_page() and others need to access both memnode_shift and the very first bytes of memnodemap[]. If we force memnode_shift to be just before the memnodemap array, we can reduce the memory footprint to one cache line instead of two for most setups. This patch introduce a 'memnode' structure where shift and map[] are carefully placed. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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Kevin Winchester authored
register_die_notifier is exported twice, once in traps.c and once in x8664_ksyms.c. This results in a warning on build. Signed-off-by:
Kevin Winchester <kwin@ns.sympatico.ca> Signed-off-by:
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Navin Boppuri authored
arch/x86_64/kernel/aperture.c: The search for the AGP bridge has been extended to search for all the 256 buses instead of the first 32. This is required since on a some systems, the bridge may be located on a bus much farther than the first 32. By searching all 256 buses, we guarantee that the search succeeds on such systems. arch/x86_64/kernel/pci-gart.c: The search for the Northbridge is not limited to just bus 0 anymore. This is required because on certain systems, we may not find one on bus 0. Signed-off-by:
Navin Boppuri <navin.boppuri@newisys.com> Signed-off-by:
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Andi Kleen authored
For consistency with other architectures Signed-off-by:
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Jon Mason authored
Have the GART_IOMMU help text specify that this is the hardware IOMMU in amd64 processors. This will be significant if/when other IOMMUs are added to the x86-64 architecture. :-) Also, note that the previous help text stated that IOMMU was needed for >3GB memory instead of >4GB. This is fixed in the newer version. Signed-off-by:
Jon Mason <jdmason@us.ibm.com> Signed-off-by:
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Andi Kleen authored
It was a failed experiment - all benchmarks done with it on both AMD and Intel showed it was a loss. That was probably because the store buffers of the CPUs for write combining traffic weren't large enough. Signed-off-by:
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Andi Kleen authored
Spec just got published so we know the CPUID bit. Signed-off-by:
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Jon Mason authored
free_bootmem_node expects a physical address to be passed in, but __alloc_bootmem_node returns a virtual one. That address needs to be translated to physical. Signed-off-by:
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Vivek Goyal authored
o check_timer() routine fails while second kernel is booting after a crash on an opetron box. Problem happens because timer vector (0x31) seems to be locked. o After a system crash, it is not safe to service interrupts any more, hence interrupts are disabled. This leads to pending interrupts at LAPIC. LAPIC sends these interrupts to the CPU during early boot of second kernel. Other pending interrupts are discarded saying unexpected trap but timer interrupt is serviced and CPU does not issue an LAPIC EOI because it think this interrupt came from i8259 and sends ack to 8259. This leads to vector 0x31 locking as LAPIC does not clear respective ISR and keeps on waiting for EOI. o This patch issues extra EOI for the pending interrupts who have ISR set. o Though today only timer seems to be the special case because in early boot it thinks interrupts are coming from i8259 and uses mask_and_ack_8259A() as ack handler and does not issue LAPIC EOI. But probably doing it in generic manner for all vectors makes sense. Signed-off-by:
Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by:
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