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2006-09-21[IPSEC]: Use HMAC template and hash interfaceHerbert Xu
This patch converts IPsec to use the new HMAC template. The names of existing simple digest algorithms may still be used to refer to their HMAC composites. The same structure can be used by other MACs such as AES-XCBC-MAC. This patch also switches from the digest interface to hash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] digest: Added user API for new hash typeHerbert Xu
The existing digest user interface is inadequate for support asynchronous operations. For one it doesn't return a value to indicate success or failure, nor does it take a per-operation descriptor which is essential for the issuing of requests while other requests are still outstanding. This patch is the first in a series of steps to remodel the interface for asynchronous operations. For the ease of transition the new interface will be known as "hash" while the old one will remain as "digest". This patch also changes sg_next to allow chaining. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Mark parts of cipher interface as deprecatedHerbert Xu
Mark the parts of the cipher interface that have been replaced by block ciphers as deprecated. Thanks to Andrew Morton for suggesting doing this before removing them completely. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[PATCH] scatterlist: Add const to sg_set_buf/sg_init_one pointer argumentHerbert Xu
This patch adds a const modifier to the buf argument of sg_set_buf and sg_init_one. This lets people call it with pointers that are const. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[SUNRPC] GSS: Use block ciphers where applicableHerbert Xu
This patch converts SUNRPC/GSS to use the new block cipher type where applicable. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[IPSEC] ESP: Use block ciphers where applicableHerbert Xu
This patch converts IPSec/ESP to use the new block cipher type where applicable. Similar to the HMAC conversion, existing algorithm names have been kept for compatibility. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[IPSEC]: Add compatibility algorithm name supportHerbert Xu
This patch adds a compatibility name field for each IPsec algorithm. This is needed when parameterised algorithms are used. For example, "md5" will become "hmac(md5)", and "aes" will become "cbc(aes)". Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] cipher: Added block ciphers for CBC/ECBHerbert Xu
This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] cipher: Added block cipher typeHerbert Xu
This patch adds the new type of block ciphers. Unlike current cipher algorithms which operate on a single block at a time, block ciphers operate on an arbitrarily long linear area of data. As it is block-based, it will skip any data remaining at the end which cannot form a block. The block cipher has one major difference when compared to the existing block cipher implementation. The sg walking is now performed by the algorithm rather than the cipher mid-layer. This is needed for drivers that directly support sg lists. It also improves performance for all algorithms as it reduces the total number of indirect calls by one. In future the existing cipher algorithm will be converted to only have a single-block interface. This will be done after all existing users have switched over to the new block cipher type. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] scatterwalk: Prepare for block ciphersHerbert Xu
This patch prepares the scatterwalk code for use by the new block cipher type. Firstly it halves the size of scatter_walk on 32-bit platforms. This is important as we allocate at least two of these objects on the stack for each block cipher operation. It also exports the symbols since the block cipher code can be built as a module. Finally there is a hack in scatterwalk_unmap that relies on progress being made. Unfortunately, for hardware crypto we can't guarantee progress to be made since the hardware can fail. So this also gets rid of the hack by not advancing the address returned by scatterwalk_map. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] cipher: Added encrypt_one/decrypt_oneHerbert Xu
This patch adds two new operations for the simple cipher that encrypts or decrypts a single block at a time. This will be the main interface after the existing block operations have moved over to the new block ciphers. It also adds the crypto_cipher type which is currently only used on the new operations but will be extended to setkey as well once existing users have been converted to use block ciphers where applicable. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Added crypto_type supportHerbert Xu
This patch adds the crypto_type structure which will be used for all new crypto algorithm types, beginning with block ciphers. The primary purpose of this abstraction is to allow different crypto_type objects for crypto algorithms of the same type, in particular, there will be a different crypto_type objects for asynchronous algorithms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Added crypto_alloc_baseHerbert Xu
Up until now all crypto transforms have been of the same type, struct crypto_tfm, regardless of whether they are ciphers, digests, or other types. As a result of that, we check the types at run-time before each crypto operation. This is rather cumbersome. We could instead use different C types for each crypto type to ensure that the correct types are used at compile time. That is, we would have crypto_cipher/crypto_digest instead of just crypto_tfm. The appropriate type would then be required for the actual operations such as crypto_digest_digest. Now that we have the type/mask fields when looking up algorithms, it is easy to request for an algorithm of the precise type that the user wants. However, crypto_alloc_tfm currently does not expose these new attributes. This patch introduces the function crypto_alloc_base which will carry these new parameters. It will be renamed to crypto_alloc_tfm once all existing users have been converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Added asynchronous flagHerbert Xu
This patch adds the asynchronous flag and changes all existing users to only look up algorithms that are synchronous. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Add common instance initialisation codeHerbert Xu
This patch adds the helpers crypto_get_attr_alg and crypto_alloc_instance which can be used by simple one-argument templates like hmac to process input parameters and allocate instances. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] cipher: Removed special IV checks for ECBHerbert Xu
This patch makes IV operations on ECB fail through nocrypt_iv rather than calling BUG(). This is needed to generalise CBC/ECB using the template mechanism. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Get rid of flags argument to setkeyHerbert Xu
Now that the tfm is passed directly to setkey instead of the ctx, we no longer need to pass the &tfm->crt_flags pointer. This patch also gets rid of a few unnecessary checks on the key length for ciphers as the cipher layer guarantees that the key length is within the bounds specified by the algorithm. Rather than testing dia_setkey every time, this patch does it only once during crypto_alloc_tfm. The redundant check from crypto_digest_setkey is also removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Add missing accessors for new crypto_alg fieldsMichal Ludvig
Add missing accessors for cra_driver_name and cra_priority. Signed-off-by: Michal Ludvig <michal@logix.cz> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Added spawnsHerbert Xu
Spawns lock a specific crypto algorithm in place. They can then be used with crypto_spawn_tfm to allocate a tfm for that algorithm. When the base algorithm of a spawn is deregistered, all its spawns will be automatically removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] api: Add cryptomgrHerbert Xu
The cryptomgr module is a simple manager of crypto algorithm instances. It ensures that parameterised algorithms of the type tmpl(alg) (e.g., cbc(aes)) are always created. This is meant to satisfy the needs for most users. For more complex cases such as deeper combinations or multiple parameters, a netlink module will be created which allows arbitrary expressions to be parsed in user-space. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] api: Added event notificationHerbert Xu
This patch adds a notifier chain for algorithm/template registration events. This will be used to register compound algorithms such as cbc(aes). In future this will also be passed onto user-space through netlink. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] api: Add template registrationHerbert Xu
A crypto_template generates a crypto_alg object when given a set of parameters. this patch adds the basic data structure fo templates and code to handle their registration/deregistration. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] api: Split out low-level APIHerbert Xu
The crypto API is made up of the part facing users such as IPsec and the low-level part which is used by cryptographic entities such as algorithms. This patch splits out the latter so that the two APIs are more clearly delineated. As a bonus the low-level API can now be modularised if all algorithms are built as modules. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[IPSEC]: Move linux/crypto.h inclusion out of net/xfrm.hHerbert Xu
The header file linux/crypto.h is only needed by a few files so including it in net/xfrm.h (which is included by half of the networking stack) is a waste. This patch moves it out of net/xfrm.h and into the specific header files that actually need it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Add crypto_alg reference countingHerbert Xu
Up until now we've relied on module reference counting to ensure that the crypto_alg structures don't disappear from under us. This was good enough as long as each crypto_alg came from exactly one module. However, with parameterised crypto algorithms a crypto_alg object may need two or more modules to operate. This means that we need to count the references to the crypto_alg object directly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21[CRYPTO] twofish: Split out common c codeJoachim Fritschi
This patch splits up the twofish crypto routine into a common part ( key setup ) which will be uses by all twofish crypto modules ( generic-c , i586 assembler and x86_64 assembler ) and generic-c part. It also creates a new header file which will be used by all 3 modules. This eliminates all code duplication. Correctness was verified with the tcrypt module and automated test scripts. Signed-off-by: Joachim Fritschi <jfritschi@freenet.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21[CRYPTO] api: Fixed crypto_tfm context alignmentHerbert Xu
Previously the __aligned__ attribute was added to the crypto_tfm context member to ensure it is alinged correctly on architectures such as arm. Unfortunately kmalloc does not use the same minimum alignment rules as gcc so this is useless. This patch changes it to use kmalloc's minimum alignment. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-19Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: [MTD] Use SEEK_{SET,CUR,END} instead of hardcoded values in mtdchar lseek() MTD: Fix bug in fixup_convert_atmel_pri [JFFS2][SUMMARY] Fix a summary collecting bug. [PATCH] [MTD] DEVICES: Fill more device IDs in the structure of m25p80 MTD: Add lock/unlock operations for Atmel AT49BV6416 MTD: Convert Atmel PRI information to AMD format fs/jffs2/xattr.c: remove dead code [PATCH] [MTD] Maps: Add dependency on alternate probe methods to physmap [PATCH] MTD: Add Macronix MX29F040 to JEDEC [MTD] Fixes of performance and stability issues in CFI driver. block2mtd.c: Make kernel boot command line arguments work (try 4) [MTD NAND] Fix lookup error in nand_get_flash_type() remove #error on !PCI from pmc551.c MTD: [NAND] Fix the sharpsl driver after breakage from a core conversion [MTD] NAND: OOB buffer offset fixups make fs/jffs2/nodelist.c:jffs2_obsolete_node_frag() static [PATCH] [MTD] NAND: fix dead URL in Kconfig
2006-09-19[PATCH] headers_check: Clean up asm-parisc/page.h for user headersMatthew Wilcox
Remove definitions of PAGE_* from the user view Delete unnecessary comments referring to the size of pages Only include <asm-generic> if we're in __KERNEL__ Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-19[PATCH] Fix 'make headers_check' on ia64Geert Uytterhoeven
Fix 'make headers_check' on m68k Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-18x86: save/restore eflags in context switchLinus Torvalds
(And reset it on new thread creation) It turns out that eflags is important to save and restore not just because of iopl, but due to the magic bits like the NT bit, which we don't want leaking between different threads. Tested-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-18Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [ATM] CLIP: Do not refer freed skbuff in clip_mkip(). [NET]: Drop tx lock in dev_watchdog_up [PACKET]: Don't truncate non-linear skbs with mmaped IO [NET]: Mark frame diverter for future removal. [NETFILTER]: Add secmark headers to header-y [ATM]: linux-atm-general mailing list is subscribers only [ATM]: [he] when transmit fails, unmap the dma regions [TCP] tcp-lp: update information to MAINTAINERS [TCP] tcp-lp: bug fix for oops in 2.6.18-rc6 [BRIDGE]: random extra bytes on STP TCN packet [IPV6]: Accept -1 for IPV6_TCLASS [IPV6]: Fix tclass setting for raw sockets. [IPVS]: remove the debug option go ip_vs_ftp [IPVS]: Make sure ip_vs_ftp ports are valid [IPVS]: auto-help for ip_vs_ftp [IPVS]: Document the ports option to ip_vs_ftp in kernel-parameters.txt [TCP]: Turn ABC off. [NEIGH]: neigh_table_clear() doesn't free stats
2006-09-18Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3815/1: headers_install support for ARM [ARM] 3794/1: S3C24XX: do not defined set_irq_wake when no CONFIG_PM [ARM] 3793/1: S3C2412: fix wrong serial info struct [ARM] 3780/1: Fix iop321 cpuid [ARM] 3786/1: pnx4008: update defconfig [ARM] 3785/1: S3C2412: Fix idle code as default uses wrong clocks [ARM] 3784/1: S3C2413: fix config for MACH_S3C2413/MACH_SMDK2413
2006-09-18[ARM] 3815/1: headers_install support for ARMRalph Siemsen
Move kernel-only #includes into #ifdef __KERNEL__, so that headers_install target can be used on ARM. Signed-off-by: Ralph Siemsen <ralphs@netwinder.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-17[NETFILTER]: Add secmark headers to header-yJames Morris
This patch includes xt_SECMARK.h and xt_CONNSECMARK.h to the kernel headers which are exported via 'make headers_install'. This is needed to allow userland code to be built correctly with these features. Please apply, and consider for inclusion with 2.6.18 as a bugfix. Signed-off-by: James Morris <jmorris@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-16[PATCH] Fix 'make headers_check' for AlphaDavid Woodhouse
Alpha currently fails 'make headers_check' in the 2.6.18-rc kernels. This patch fixes it, by moving the existing #ifdef __KERNEL__ in asm/page.h so that it covers everything that userspace shouldn't so, and by adding asm/compiler.h to the list of exported files so that its use within asm/byteorder.h is successful. [ Note that at least with GCC 4, <linux/compiler.h> doesn't do the forced inlining about which there are nasty comments (and a workaround) in <asm/compiler.h>, unless you set CONFIG_FORCED_INLINING. Rather than keep the mess you have in <asm/compiler.h> you could perhaps just make sure CONFIG_FORCED_INLINING=n is also honoured with GCC3, and make sure it cannot be set for Alpha? ] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16[PATCH] Fix 'make headers_check' on x86_64David Woodhouse
On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-x86_64/elf.h requires asm/processor.h, which does not exist > asm-x86_64/signal.h requires linux/linkage.h, which does not exist > asm-x86_64/unistd.h requires linux/linkage.h, which does not exist > asm-x86_64/vsyscall.h requires linux/seqlock.h, which does not exist Again, move stuff which shouldn't be visible inside (mostly already existing) #ifdef __KERNEL__. This fixes a bunch of mislabelled and unlabelled #endifs in unistd.h and also cleans that up to conform with what's visible on other architectures, since the minimal fix for the error reported about would have involved a more intrusive patch, renesting other ifdefs. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16[PATCH] Fix 'make headers_check' on i386David Woodhouse
This brings i386 asm/unistd.h into consistency with other architectures by not exporting functionality which is not necessary. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16[PATCH] Fix 'make headers_check' on ia64David Woodhouse
On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist > asm-ia64/resource.h requires asm/ustack.h, which does not exist Hide parts which shouldn't be visible to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16[PATCH] Fix 'make headers_check' on s390David Woodhouse
On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-s390/debug.h requires linux/string.h, which does not exist > asm-s390/elf.h requires asm/system.h, which does not exist Move things around slightly so the right things end up within #ifdef __KERNEL__ and thus don't pollute the exported headers. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-14[ARM] 3785/1: S3C2412: Fix idle code as default uses wrong clocksBen Dooks
Patch from Ben Dooks Fix the idle code on the s3c2412 as the default code is using bits in the CLKCON register that are no-longer there. Provide an override for the idle code, and ensure that the power configuration is set to allow idle instead of stop or sleep. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-13Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Fix G5 DART (IOMMU) race causing occasional data corruption [POWERPC] Fix MMIO ops to provide expected barrier behaviour [POWERPC] Fix interrupt clearing in kdump shutdown sequence [POWERPC] update prep_defconfig [POWERPC] kdump: Support kernels having 64k page size. [POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic(). [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx. [POWERPC] Update defconfigs
2006-09-13[PATCH] headers_check: fix userspace build of asm-mips/page.hDavid Woodhouse
MIPS asm/page.h unconditionally includes <asm-generic/memory_model.h>, which doesn't exist in userspace. Move an #endif /* __KERNEL__ */ down a few lines to prevent that. Also, remove the broken definition of PAGE_SIZE which is never going to be correct -- in the absence of PAGE_SIZE, non-broken userspace will fall back to using sysconf() or getpagesize() instead. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[PATCH] headers_check: don't expose PFN stuff to userspace in <asm-i386/setup.h>David Woodhouse
The header file <linux/pfn.h> doesn't exist in userspace and probably shouldn't -- but it's used unconditionally in <asm-i386/setup.h>. Protect it with #ifdef __KERNEL__ and move setup.h from $(header-y) to $(unifdef-y) in Kbuild accordingly. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[PATCH] headers_check: move kernel-only #includes within <asm-i386/elf.h>David Woodhouse
Some files which don't exist in userspace were being included unconditionally in asm-i386/elf.h. Move the offending #includes down a few lines so that they're protected by #ifdef __KERNEL__ In fact, we probably want to kill off all userspace use of asm/elf.h -- but we aren't there yet, so we should at least make it possible to include it for now. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[PATCH] headers_check: move inclusion of <linux/linkage.h> in ↵David Woodhouse
<asm-i386/signal.h> Because <linux/linkage.h> doesn't exist in userspace, it should be only included from within #ifdef __KERNEL__. Move the corresponding #include Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[PATCH] headers_check: remove <asm/timex.h> from user exportDavid Woodhouse
There's useful stuff in <linux/timex.h> but <asm/timex.h> has nothing for userspace. Stop exporting it, and include it only from within the existing #ifdef __KERNEL__ part of <linux/timex.h> This fixes a 'make headers_check' failure on i386 because asm-i386/timex.h includes both asm-i386/tsc.h and asm-i386/processor.h, neither of which are exported to userspace. It's not entirely clear _why_ it includes either of these, but it does. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[PATCH] headers_check: reduce user-visible noise in <linux/nfs_fs.h>David Woodhouse
We don't need any of this crap included from the user-visible part of nfs_fs.h -- remove it all. In fact, we probably don't need anything but NFS_SUPER_MAGIC to be defined; is there any need for anything else? And magic numbers should probably move to <linux/magic.h> rather than being strewn across various fs-specific include files which exist in userspace for solely that purpose. With this patch, 'make header_check' works again at least on PowerPC. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13[POWERPC] Fix MMIO ops to provide expected barrier behaviourPaul Mackerras
This changes the writeX family of functions to have a sync instruction before the MMIO store rather than after, because the generally expected behaviour is that the device receiving the MMIO store can be guaranteed to see the effects of any preceding writes to normal memory. To preserve ordering between writeX and readX, and to preserve ordering between preceding stores and the readX, the readX family of functions have had an sync added before the load. Although writeX followed by spin_unlock is not officially guaranteed to keep the writeX inside the spin-locked region unless an mmiowb() is used, there are currently drivers that depend on the previous behaviour on powerpc, which was that the mmiowb wasn't actually required. Therefore we have a per-cpu flag that is set by writeX, cleared by __raw_spin_lock and mmiowb, and tested by __raw_spin_unlock. If it is set, __raw_spin_unlock does a sync and clears it. This changes both 32-bit and 64-bit readX/writeX. 32-bit already has a sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus doesn't need the per-cpu flag. Tested on G5 (PPC970) and POWER5. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13[POWERPC] kdump: Support kernels having 64k page size.Sachin P. Sant
This is required to generate proper core files using kdump on ppc64. Create a backup region of 64K size irrespective of the PAGE SIZE. At present 32K was used as backup size. In the case of 64K page size, second PT_LOAD segments starts at 32K and the first one is not page aligned. __ioremap() (crash_dump.c) fails if pfn = 0 which is the case for the second PT_LOAD segment. This is not an issue for 4K page size because the the first page (32K backup) is copied to second kernel memory and thus referencing with the second kernel pfn. Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>