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* Merge branch 'work.csum_and_copy' of ↵Linus Torvalds2020-10-131-15/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull copy_and_csum cleanups from Al Viro: "Saner calling conventions for csum_and_copy_..._user() and friends" [ Removing 800+ lines of code and cleaning stuff up is good - Linus ] * 'work.csum_and_copy' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: ppc: propagate the calling conventions change down to csum_partial_copy_generic() amd64: switch csum_partial_copy_generic() to new calling conventions sparc64: propagate the calling convention changes down to __csum_partial_copy_...() xtensa: propagate the calling conventions change down into csum_partial_copy_generic() mips: propagate the calling convention change down into __csum_partial_copy_..._user() mips: __csum_partial_copy_kernel() has no users left mips: csum_and_copy_{to,from}_user() are never called under KERNEL_DS sparc32: propagate the calling conventions change down to __csum_partial_copy_sparc_generic() i386: propagate the calling conventions change down to csum_partial_copy_generic() sh: propage the calling conventions change down to csum_partial_copy_generic() m68k: get rid of zeroing destination on error in csum_and_copy_from_user() arm: propagate the calling convention changes down to csum_partial_copy_from_user() alpha: propagate the calling convention changes down to csum_partial_copy.c helpers saner calling conventions for csum_and_copy_..._user() csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum csum_partial_copy_nocheck(): drop the last argument unify generic instances of csum_partial_copy_nocheck() icmp_push_reply(): reorder adding the checksum up skb_copy_and_csum_bits(): don't bother with the last argument
| * unify generic instances of csum_partial_copy_nocheck()Al Viro2020-08-201-15/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | quite a few architectures have the same csum_partial_copy_nocheck() - simply memcpy() the data and then return the csum of the copy. hexagon, parisc, ia64, s390, um: explicitly spelled out that way. arc, arm64, csky, h8300, m68k/nommu, microblaze, mips/GENERIC_CSUM, nds32, nios2, openrisc, riscv, unicore32: end up picking the same thing spelled out in lib/checksum.h (with varying amounts of perversions along the way). everybody else (alpha, arm, c6x, m68k/mmu, mips/!GENERIC_CSUM, powerpc, sh, sparc, x86, xtensa) have non-generic variants. For all except c6x the declaration is in their asm/checksum.h. c6x uses the wrapper from asm-generic/checksum.h that would normally lead to the lib/checksum.h instance, but in case of c6x we end up using an asm function from arch/c6x instead. Screw that mess - have architectures with private instances define _HAVE_ARCH_CSUM_AND_COPY in their asm/checksum.h and have the default one right in net/checksum.h conditional on _HAVE_ARCH_CSUM_AND_COPY *not* defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | ia64: Remove perfmonChristoph Hellwig2020-09-112-56/+0
|/ | | | | | | | | | | perfmon has been marked broken and thus been disabled for all builds for more than two years. Remove it entirely. Cc: Anant Thazhemadam <anant.thazhemadam@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Enthusiastically-ACKed-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20200911094920.1173631-1-hch@lst.de
* fix a braino in ia64 uaccess csum changesAl Viro2020-06-031-1/+1
| | | | | | | Fixes: cc03f19cfd45 (ia64: csum_partial_copy_nocheck(): don't abuse csum_partial_copy_from_user()) Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* take the dummy csum_and_copy_from_user() into net/checksum.hAl Viro2020-05-291-18/+0
| | | | | | | | | | | now that can be done conveniently - all non-trivial cases have _HAVE_ARCH_COPY_AND_CSUM_FROM_USER defined, so the fallback in net/checksum.h is used only for dummy (copy_from_user, then csum_partial) implementation. Allowing us to get rid of all dummy instances, both of csum_and_copy_from_user() and csum_partial_copy_from_user(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ia64: turn csum_partial_copy_from_user() into csum_and_copy_from_user()Al Viro2020-05-291-14/+4
| | | | | | | Just use copy_from_user() there, rather than relying upon the wrapper to have done access_ok() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ia64: csum_partial_copy_nocheck(): don't abuse csum_partial_copy_from_user()Al Viro2020-05-291-2/+2
| | | | | | | Just inline the call and use memcpy() instead of __copy_from_user() and note that the tail is precisely ia64 csum_partial(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ia64: remove now unused machvec indirectionsChristoph Hellwig2019-08-161-114/+0
| | | | | | | | | | | With the SGI SN2 machvec removal most of the indirections are unused now, so remove them. This includes the entire removal of the mmio read*/write* macros as the generic ones are identical to the asm-generic/io.h version. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lkml.kernel.org/r/20190813072514.23299-17-hch@lst.de Signed-off-by: Tony Luck <tony.luck@intel.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47Thomas Gleixner2019-05-241-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 or at your option any later version you should have received a copy of the gnu general public license for example usr src linux copying if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 20 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170858.552543146@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* treewide: Add SPDX license identifier for missed filesThomas Gleixner2019-05-211-0/+1
| | | | | | | | | | | | | | | | | Add SPDX license identifiers to all files which: - Have no license information of any form - Have EXPORT_.*_SYMBOL_GPL inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-0220-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* kill strlen_user()Al Viro2017-05-162-201/+1
| | | | | | no callers, no consistent semantics, no sane way to use it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'work.uaccess' of ↵Linus Torvalds2017-05-011-12/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull uaccess unification updates from Al Viro: "This is the uaccess unification pile. It's _not_ the end of uaccess work, but the next batch of that will go into the next cycle. This one mostly takes copy_from_user() and friends out of arch/* and gets the zero-padding behaviour in sync for all architectures. Dealing with the nocache/writethrough mess is for the next cycle; fortunately, that's x86-only. Same for cleanups in iov_iter.c (I am sold on access_ok() in there, BTW; just not in this pile), same for reducing __copy_... callsites, strn*... stuff, etc. - there will be a pile about as large as this one in the next merge window. This one sat in -next for weeks. -3KLoC" * 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (96 commits) HAVE_ARCH_HARDENED_USERCOPY is unconditional now CONFIG_ARCH_HAS_RAW_COPY_USER is unconditional now m32r: switch to RAW_COPY_USER hexagon: switch to RAW_COPY_USER microblaze: switch to RAW_COPY_USER get rid of padding, switch to RAW_COPY_USER ia64: get rid of copy_in_user() ia64: sanitize __access_ok() ia64: get rid of 'segment' argument of __do_{get,put}_user() ia64: get rid of 'segment' argument of __{get,put}_user_check() ia64: add extable.h powerpc: get rid of zeroing, switch to RAW_COPY_USER esas2r: don't open-code memdup_user() alpha: fix stack smashing in old_adjtimex(2) don't open-code kernel_setsockopt() mips: switch to RAW_COPY_USER mips: get rid of tail-zeroing in primitives mips: make copy_from_user() zero tail explicitly mips: clean and reorder the forest of macros... mips: consolidate __invoke_... wrappers ...
| * get rid of padding, switch to RAW_COPY_USERAl Viro2017-04-071-12/+1
| | | | | | | | | | | | Merced is fucked, so what else is new? Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | ia64: restore symbol versions for symbols defined in assemblyJan Beulich2017-04-141-8/+8
|/ | | | | | | | | | | | | | The ia64 build generates many warnings like this: WARNING: EXPORT symbol "empty_zero_page" [vmlinux] version generation failed, symbol will not be versioned. Besides adding the necessary header this also requires fiddling with some explicit .S -> .o rules. Cc: IA64-ML <linux-ia64@vger.kernel.org> Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Replace <asm/uaccess.h> with <linux/uaccess.h> globallyLinus Torvalds2016-12-241-1/+1
| | | | | | | | | | | | | This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ia64: move exports to definitionsAl Viro2016-08-0817-0/+39
| | | | | | | | | | | | | | Here we have another kind of deviation from the default case - a difference between exporting functions and non-functions. EXPORT_DATA_SYMBOL... is really different from EXPORT_SYMBOL... on ia64, and we need to use the right one when moving exports from *.c where C compiler has the required information to *.S, where we need to supply it manually. parisc64 will be another one like that. Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [kbuild] handle exports in lib-y objects reliablyAl Viro2016-08-081-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Collect the symbols exported by anything that goes into lib.a and add an empty object (lib-exports.o) with explicit undefs for each of those to obj-y. That allows to relax the rules regarding the use of exports in lib-* objects - right now an object with export can be in lib-* only if we are guaranteed that there always will be users in built-in parts of the tree, otherwise it needs to be in obj-*. As the result, we have an unholy mix of lib- and obj- in lib/Makefile and (especially) in arch/*/lib/Makefile. Moreover, a change in generic part of the kernel can lead to mysteriously missing exports on some configs. With this change we don't have to worry about that anymore. One side effect is that built-in.o now pulls everything with exports from the corresponding lib.a (if such exists). That's exactly what we want for linking vmlinux and fortunately it's almost the only thing built-in.o is used in. arch/ia64/hp/sim/boot/bootloader is the only exception and it's easy to get rid of now - just turn everything in arch/ia64/lib into lib-* and don't bother with arch/ia64/lib/built-in.o anymore. [AV: stylistic fix from Michal folded in] Acked-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'master' into for-nextJiri Kosina2016-04-181-4/+4
|\ | | | | | | | | | | Sync with Linus' tree so that patches against newer codebase can be applied. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * ipv4: Update parameters for csum_tcpudp_magic to their original typesAlexander Duyck2016-03-141-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates all instances of csum_tcpudp_magic and csum_tcpudp_nofold to reflect the types that are usually used as the source inputs. For example the protocol field is populated based on nexthdr which is actually an unsigned 8 bit value. The length is usually populated based on skb->len which is an unsigned integer. This addresses an issue in which the IPv6 function csum_ipv6_magic was generating a checksum using the full 32b of skb->len while csum_tcpudp_magic was only using the lower 16 bits. As a result we could run into issues when attempting to adjust the checksum as there was no protocol agnostic way to update it. With this change the value is still truncated as many architectures use "(len + proto) << 8", however this truncation only occurs for values greater than 16776960 in length and as such is unlikely to occur as we stop the inner headers at ~64K in size. I did have to make a few minor changes in the arm, mn10300, nios2, and score versions of the function in order to support these changes as they were either using things such as an OR to combine the protocol and length, or were using ntohs to convert the length which would have truncated the value. I also updated a few spots in terms of whitespace and type differences for the addresses. Most of this was just to make sure all of the definitions were in sync going forward. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | arch/ia64/lib: Fix broken URL in commentsSina Hamedian2016-04-182-2/+2
|/ | | | | | | | | The URL to the book IA-64 and Elementary Functions in idiv32.S and idiv64.S just led to a 404 page, so I updated them with a known good link that others can reference. Signed-off-by: Sina Hamedian <shamedian@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Fix common misspellingsLucas De Marchi2011-03-311-1/+1
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* [IA64] fix csum_ipv6_magic()Jiri Bohac2009-09-021-3/+5
| | | | | | | | | | | The 32-bit parameters (len and csum) of csum_ipv6_magic() are passed in 64-bit registers in2 and in4. The high order 32 bits of the registers were never cleared, and garbage was sometimes calculated into the checksum. Fix this by clearing the high order 32 bits of these registers. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Add Variable Page Size and IA64 Support in Intel IOMMUFenghua Yu2008-10-171-0/+55
| | | | | | | | | | | | | | The patch contains Intel IOMMU IA64 specific code. It defines new machvec dig_vtd, hooks for IOMMU, DMAR table detection, cache line flush function, etc. For a generic kernel with CONFIG_DMAR=y, if Intel IOMMU is detected, dig_vtd is used for machinve vector. Otherwise, kernel falls back to dig machine vector. Kernel parameter "machvec=dig" or "intel_iommu=off" can be used to force kernel to boot dig machine vector. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] export copy_page() to modulesAndrew Morton2007-12-081-2/+2
| | | | | | | | | | | | | | | | | With the unionfs patch applied I get ERROR: "copy_page" [fs/unionfs/unionfs.ko] undefined! the other architectures (some, at least) export copy_page() so I guess ia64 should also do so. To do this we need to move the copy_page() functions out of lib.a and into built-in.o and add the EXPORT_SYMBOL(). Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* missing exports of csum_...Al Viro2007-07-171-0/+1
| | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [AF_RXRPC/AFS]: Arch-specific fixes.David Howells2007-04-281-0/+2
| | | | | | | | | | | | | | | | | | Fixes for various arch compilation problems: (*) Missing module exports. (*) Variable name collision when rxkad and af_rxrpc both built in (rxrpc_debug). (*) Large constant representation problem (AFS_UUID_TO_UNIX_TIME). (*) Configuration dependencies. (*) printk() format warnings. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IA64] always build arch/ia64/lib/xor.oLee Schermerhorn2007-03-061-2/+1
| | | | | | | | | | | | | | | | | | Always build ia64 xor.o because multiple config options now depend on it. Necessary to build .20-mm* on ia64 when, e.g., CONFIG_ASYNC_TX_DMA is defined. Don't know if '_ASYNC_TX_DMA makes sense on ia64. If not, maybe Kconfig should preclude it. Could have defined a Kconfig option that defaults to true if MD_RAID456 || ASYNC_TX_DMA to control building of xor.o, but xor.o is only 848 bytes and this IS ia64... Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Bob Picco <bob.picco@hp.com> Cc: Eric Whitney <eric.whitney@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] tidy up return value of ip_fast_csumChen, Kenneth W2006-12-071-1/+2
| | | | | | | | | | | | | | While working on implementing csum_ipv6_magic, I noticed that current version of ip_fast_csum will potentially return bits above "unsigned short" as 1. While no harm is done right now because all call sites will chop off the upper bits when it uses the return value. However, this is still dangerous and buggy. Here is a patch to enforce that the function really returns unsigned short in the native register format. The fix is free as there are plenty open slot to add one more asm instruction. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] implement csum_ipv6_magic for ia64.Chen, Kenneth W2006-12-071-2/+53
| | | | | | | | The asm version is 4.4 times faster than the generic C version and 10X smaller in code size. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [NET]: IA64 checksum annotations and cleanups.Al Viro2006-12-032-42/+27
| | | | | | | | | | * sanitize prototypes, annotate * ntohs -> shift in checksum calculations * kill access_ok() in csum_partial_copy_from_user * collapse do_csum_partial_copy_from_user Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Fix RAID5 + IA64 compilePrarit Bhargava2006-08-031-1/+1
| | | | | | | | | | CONFIG_MD_RAID5 became CONFIG_MD_RAID456 in drivers/md/Kconfig. Make the same change in arch/ia64 Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Aron Griffis <aron@hp.com> Acked-by: Jes Sorenson <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-303-3/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [IA64] strcpy returns NULL pointer and not destination pointerChen, Kenneth W2006-05-051-3/+6
| | | | | | | | | | | | | | | | | Bob Picco noted that 6edfba1b33c701108717f4e036320fc39abe1912 dropped the -ffreestanding compiler flag from the top level Makefile, which allows the compiler to substitute memcpy() in places where strcpy() is used with a known size source string. But the ia64 memcpy() returns 0 for success, and "bytes copied" for failure. Fix to return the address of the destination string (like stdlibc version, and other architectures). There are no places where ia64 specific code makes use of the non-standard return value. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] bitops: ia64: use generic bitopsAkinobu Mita2006-03-262-89/+1
| | | | | | | | | | | | | - remove generic_fls64() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() - remove sched_find_first_bit() Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Update from upstream with manual merge of Yasunori Goto'sTony Luck2005-10-202-43/+0
|\ | | | | | | | | | | | | | | changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341 since this file has been moved from arch/ia64/lib/swiotlb.c to lib/swiotlb.c Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [PATCH] swiotlb: make sure initial DMA allocations really are in DMA memoryYasunori Goto2005-10-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces a limit parameter to the core bootmem allocator; The new parameter indicates that physical memory allocated by the bootmem allocator should be within the requested limit. We also introduce alloc_bootmem_low_pages_limit, alloc_bootmem_node_limit, alloc_bootmem_low_pages_node_limit apis, but alloc_bootmem_low_pages_limit is the only api used for swiotlb. The existing alloc_bootmem_low_pages() api could instead have been changed and made to pass right limit to the core allocator. But that would make the patch more intrusive for 2.6.14, as other arches use alloc_bootmem_low_pages(). We may be done that post 2.6.14 as a cleanup. With this, swiotlb gets memory within 4G for both x86_64 and ia64 arches. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Ravikiran G Thirumalai <kiran@scalex86.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [LIB]: Consolidate _atomic_dec_and_lock()David S. Miller2005-09-152-43/+0
| | | | | | | | | | | | | | | | | | | | | | | | Several implementations were essentialy a common piece of C code using the cmpxchg() macro. Put the implementation in one spot that everyone can share, and convert sparc64 over to using this. Alpha is the lone arch-specific implementation, which codes up a special fast path for the common case in order to avoid GP reloading which a pure C version would require. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] swiotlb: move from arch/ia64/lib/ to lib/John W. Linville2005-09-292-760/+1
| | | | | | | | | | | | | | | | | | | | The swiotlb implementation is shared by both IA-64 and EM64T. However, the source itself lives under arch/ia64. This patch moves swiotlb.c from arch/ia64/lib to lib/ and fixes-up the appropriate Makefile and Kconfig files. No actual changes are made to swiotlb.c. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64] more robust zx1/sx1000 machvec supportAlex Williamson2005-09-151-0/+102
|/ | | | | | | | | | | | | | | | Machine vector selection has always been a bit of a hack given how early in system boot it needs to be done. Services like ACPI namespace are not available and there are non-trivial problems to moving them to early boot. However, there's no reason we can't change to a different machvec later in boot when the services we need are available. By adding a entry point for later initialization of the swiotlb, we can add an error path for the hpzx1 machevec initialization and fall back to the DIG machine vector if IOMMU hardware isn't found in the system. Since ia64 uses 4GB for zone DMA (no ISA support), it's trivial to allocate a contiguous range from the slab for bounce buffer usage. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Manual merge fix for 3 filesTony Luck2005-09-081-0/+1
|\ | | | | | | | | | | | | | | arch/ia64/Kconfig arch/ia64/kernel/acpi.c include/asm-ia64/irq.h Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [PATCH] Kprobes: prevent possible race conditions ia64 changesPrasanna S Panchamukhi2005-09-081-0/+1
| | | | | | | | | | | | | | | | | | This patch contains the ia64 architecture specific changes to prevent the possible race conditions. Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [IA64] make exception handler in copy_user more robustChen, Kenneth W2005-09-071-0/+3
|/ | | | | | | | | | | | | | The exception handler in copy user always expects fault occurs only on user space address and the fall back recovery code is written with that very assumption in mind. Recent source code inspection revealed that while it worked splendid and to the expectation under normal circumstances, It broke down under unexpected condition where some address calculation might go outside the legal address range the original copy_user was called for. This patch is to make copy_user exception handler more robust and to prevent potential memory corruption. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull pending-2.6.14 into release branchTony Luck2005-08-301-1/+1
|\
| * [IA64] Delete erroneous copy_page.o in global lib-y listKenneth Chen2005-08-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | copy_page.o appeared twice in arch/ia64/lib/Makefile. The one in global lib-y is wrong where it should be just in lib-$(CONFIG_ITANIUM). Both copy_page.o and copy_page_mck.o are build for Itanium2 processor and the link order will pick up the low performing copy_page function (originally written for itanium processor). In this case, we really want the copy_page_mck.o for optimized version. Signed-off-by: Kenneth Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [IA64, X86_64] fix swiotlb sizingAlex Williamson2005-08-191-3/+2
|/ | | | | | | | | | | | | | Fix swiotlb sizing to match what the comments and the kernel parameters documentation indicate. Given a default 16k page size kernel (ia64) and a 2k swiotlb page size, we're off by a multiple of 8 trying to size the swiotlb. When specified on the boot line, the swiotlb is made 8x bigger than requested. When left to the default value, it's 8x smaller than the comments indicate. For x86_64 the multiplier would be 2x. The patch below fixes this. Now, what's a good default swiotlb size? Apparently we don't really need 64MB. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] improve flush_icache_range()Zoltan Menyhart2005-07-131-12/+34
| | | | | | | | | Check with PAL to see what the i-cache line size is for each level of the cache, and so use the correct stride when flushing the cache. Acked-by: David Mosberger Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] use fc.i for fluch_icache_range()David Mosberger-Tang2005-05-031-3/+3
| | | | | | | | | | | | This is a small patch to switch fluch_icache_range() to use fc.i instead of fc. This would save time on processors which can establish i-cache coherency without flushing the cache-line out to memory (not that any current processors do). On existing processors, fc.i behaves like fc. The only caveat is that very old assemblers may not know about fc.i yet. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fix typos caught by new assemblerDavid Mosberger-Tang2005-05-031-1/+1
| | | | | | | | | | | | Patch below fixes 3 trivial typos which are caught by the new assembler (v2.169.90). Please apply. [Note: fix to memcpy that was also part of this patch was separately applied from patches by H.J. and Andreas ... so the delta here only has the other two fixes. -Tony] Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix memcpy_mck.S for current binutilsAndreas Schwab2005-05-031-1/+1
| | | | | | | | The current ia64 assembler complains about mismatching .proc/.endp pairs. (Same patch also sent by H.J. Lu) Signed-off-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
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