- 30 5月, 2012 5 次提交
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由 Fabio Estevam 提交于
In order to keep consistency with other rtc drivers,rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC. Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com> Acked-by: NWolfram Sang <w.sang@pengutronix.de> Cc: Alessandro Zummo <a.zummo@towertech.it> [akpm@linux-foundation.org: fix missed arch/arm/configs/imx_v6_v7_defconfig] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrea Arcangeli 提交于
When holding the mmap_sem for reading, pmd_offset_map_lock should only run on a pmd_t that has been read atomically from the pmdp pointer, otherwise we may read only half of it leading to this crash. PID: 11679 TASK: f06e8000 CPU: 3 COMMAND: "do_race_2_panic" #0 [f06a9dd8] crash_kexec at c049b5ec #1 [f06a9e2c] oops_end at c083d1c2 #2 [f06a9e40] no_context at c0433ded #3 [f06a9e64] bad_area_nosemaphore at c043401a #4 [f06a9e6c] __do_page_fault at c0434493 #5 [f06a9eec] do_page_fault at c083eb45 #6 [f06a9f04] error_code (via page_fault) at c083c5d5 EAX: 01fb470c EBX: fff35000 ECX: 00000003 EDX: 00000100 EBP: 00000000 DS: 007b ESI: 9e201000 ES: 007b EDI: 01fb4700 GS: 00e0 CS: 0060 EIP: c083bc14 ERR: ffffffff EFLAGS: 00010246 #7 [f06a9f38] _spin_lock at c083bc14 #8 [f06a9f44] sys_mincore at c0507b7d #9 [f06a9fb0] system_call at c083becd start len EAX: ffffffda EBX: 9e200000 ECX: 00001000 EDX: 6228537f DS: 007b ESI: 00000000 ES: 007b EDI: 003d0f00 SS: 007b ESP: 62285354 EBP: 62285388 GS: 0033 CS: 0073 EIP: 00291416 ERR: 000000da EFLAGS: 00000286 This should be a longstanding bug affecting x86 32bit PAE without THP. Only archs with 64bit large pmd_t and 32bit unsigned long should be affected. With THP enabled the barrier() in pmd_none_or_trans_huge_or_clear_bad() would partly hide the bug when the pmd transition from none to stable, by forcing a re-read of the *pmd in pmd_offset_map_lock, but when THP is enabled a new set of problem arises by the fact could then transition freely in any of the none, pmd_trans_huge or pmd_trans_stable states. So making the barrier in pmd_none_or_trans_huge_or_clear_bad() unconditional isn't good idea and it would be a flakey solution. This should be fully fixed by introducing a pmd_read_atomic that reads the pmd in order with THP disabled, or by reading the pmd atomically with cmpxchg8b with THP enabled. Luckily this new race condition only triggers in the places that must already be covered by pmd_none_or_trans_huge_or_clear_bad() so the fix is localized there but this bug is not related to THP. NOTE: this can trigger on x86 32bit systems with PAE enabled with more than 4G of ram, otherwise the high part of the pmd will never risk to be truncated because it would be zero at all times, in turn so hiding the SMP race. This bug was discovered and fully debugged by Ulrich, quote: ---- [..] pmd_none_or_trans_huge_or_clear_bad() loads the content of edx and eax. 496 static inline int pmd_none_or_trans_huge_or_clear_bad(pmd_t *pmd) 497 { 498 /* depend on compiler for an atomic pmd read */ 499 pmd_t pmdval = *pmd; // edi = pmd pointer 0xc0507a74 <sys_mincore+548>: mov 0x8(%esp),%edi ... // edx = PTE page table high address 0xc0507a84 <sys_mincore+564>: mov 0x4(%edi),%edx ... // eax = PTE page table low address 0xc0507a8e <sys_mincore+574>: mov (%edi),%eax [..] Please note that the PMD is not read atomically. These are two "mov" instructions where the high order bits of the PMD entry are fetched first. Hence, the above machine code is prone to the following race. - The PMD entry {high|low} is 0x0000000000000000. The "mov" at 0xc0507a84 loads 0x00000000 into edx. - A page fault (on another CPU) sneaks in between the two "mov" instructions and instantiates the PMD. - The PMD entry {high|low} is now 0x00000003fda38067. The "mov" at 0xc0507a8e loads 0xfda38067 into eax. ---- Reported-by: NUlrich Obergfell <uobergfe@redhat.com> Signed-off-by: NAndrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Petr Matousek <pmatouse@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Bjorn Helgaas 提交于
Print physical address info in a style consistent with the %pR style used elsewhere in the kernel. For example: -found SMP MP-table at [ffff8800000fce90] fce90 +found SMP MP-table at [mem 0x000fce90-0x000fce9f] mapped at [ffff8800000fce90] -initial memory mapped : 0 - 20000000 +initial memory mapped: [mem 0x00000000-0x1fffffff] -Base memory trampoline at [ffff88000009c000] 9c000 size 8192 +Base memory trampoline [mem 0x0009c000-0x0009dfff] mapped at [ffff88000009c000] -SRAT: Node 0 PXM 0 0-80000000 +SRAT: Node 0 PXM 0 [mem 0x00000000-0x7fffffff] Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Bjorn Helgaas 提交于
Print physical address info in a style consistent with the %pR style used elsewhere in the kernel. For example: -BIOS-provided physical RAM map: +e820: BIOS-provided physical RAM map: - BIOS-e820: 0000000000000100 - 000000000009e000 (usable) +BIOS-e820: [mem 0x0000000000000100-0x000000000009dfff] usable -Allocating PCI resources starting at 90000000 (gap: 90000000:6ed1c000) +e820: [mem 0x90000000-0xfed1bfff] available for PCI devices -reserve RAM buffer: 000000000009e000 - 000000000009ffff +e820: reserve RAM buffer [mem 0x0009e000-0x0009ffff] Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Cong Wang 提交于
Cris doesn't implement atomic64 operations neither, should select GENERIC_ATOMIC64. Signed-off-by: NWANG Cong <xiyou.wangcong@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 5月, 2012 2 次提交
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由 Jonas Bonn 提交于
The generic version is both easier to support and more correct. Signed-off-by: NJonas Bonn <jonas@southpole.se> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Paul Mackerras 提交于
This is much the same as for SPARC except that we can do the find_zero() function more efficiently using the count-leading-zeroes instructions. Tested on 32-bit and 64-bit PowerPC. Signed-off-by: NPaul Mackerras <paulus@samba.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 5月, 2012 5 次提交
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由 John Crispin 提交于
Now that all drivers are converted to OF we are able to remove some remaining pieces of orphaned code. Signed-off-by: NJohn Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3841/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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由 David Miller 提交于
This throws away the sparc-specific functions in favor of the generic optimized version. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
This throws away the old x86-specific functions in favor of the generic optimized version. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
This changes the interfaces in <asm/word-at-a-time.h> to be a bit more complicated, but a lot more generic. In particular, it allows us to really do the operations efficiently on both little-endian and big-endian machines, pretty much regardless of machine details. For example, if you can rely on a fast population count instruction on your architecture, this will allow you to make your optimized <asm/word-at-a-time.h> file with that. NOTE! The "generic" version in include/asm-generic/word-at-a-time.h is not truly generic, it actually only works on big-endian. Why? Because on little-endian the generic algorithms are wasteful, since you can inevitably do better. The x86 implementation is an example of that. (The only truly non-generic part of the asm-generic implementation is the "find_zero()" function, and you could make a little-endian version of it. And if the Kbuild infrastructure allowed us to pick a particular header file, that would be lovely) The <asm/word-at-a-time.h> functions are as follows: - WORD_AT_A_TIME_CONSTANTS: specific constants that the algorithm uses. - has_zero(): take a word, and determine if it has a zero byte in it. It gets the word, the pointer to the constant pool, and a pointer to an intermediate "data" field it can set. This is the "quick-and-dirty" zero tester: it's what is run inside the hot loops. - "prep_zero_mask()": take the word, the data that has_zero() produced, and the constant pool, and generate an *exact* mask of which byte had the first zero. This is run directly *outside* the loop, and allows the "has_zero()" function to answer the "is there a zero byte" question without necessarily getting exactly *which* byte is the first one to contain a zero. If you do multiple byte lookups concurrently (eg "hash_name()", which looks for both NUL and '/' bytes), after you've done the prep_zero_mask() phase, the result of those can be or'ed together to get the "either or" case. - The result from "prep_zero_mask()" can then be fed into "find_zero()" (to find the byte offset of the first byte that was zero) or into "zero_bytemask()" (to find the bytemask of the bytes preceding the zero byte). The existence of zero_bytemask() is optional, and is not necessary for the normal string routines. But dentry name hashing needs it, so if you enable DENTRY_WORD_AT_A_TIME you need to expose it. This changes the generic strncpy_from_user() function and the dentry hashing functions to use these modified word-at-a-time interfaces. This gets us back to the optimized state of the x86 strncpy that we lost in the previous commit when moving over to the generic version. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
The generic strncpy_from_user() is not really optimal, since it is designed to work on both little-endian and big-endian. And on little-endian you can simplify much of the logic to find the first zero byte, since little-endian arithmetic doesn't have to worry about the carry bit propagating into earlier bytes (only later bytes, which we don't care about). But I have patches to make the generic routines use the architecture- specific <asm/word-at-a-time.h> infrastructure, so that we can regain the little-endian optimizations. But before we do that, switch over to the generic routines to make the patches each do just one well-defined thing. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 26 5月, 2012 15 次提交
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由 Chris Metcalf 提交于
There is no "ARCH=tile" (just like there is no "ARCH=x86") so we need to pick a default configuration, either tilepro or tilegx, when users specify ARCH=tile. We'll use tilegx, since that's our current chip. Reported-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
This is because __builtin_clz(0) returns 64 for the "undefined" case of 0, since the builtin just does a right-shift 32 and "clz" instruction. So, use the alpha approach of casting to u32 and using __builtin_clzll(). Cc: stable@vger.kernel.org Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
Also create a TILEPRO config setting to use for #ifdefs where it is cleaner to do so, and make the 64BIT setting depend directly on the setting of TILEGX. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Kautuk Consul 提交于
Commit d065bd81 (mm: retry page fault when blocking on disk transfer) and commit 37b23e05 (x86,mm: make pagefault killable) The above commits introduced changes into the x86 pagefault handler for making the page fault handler retryable as well as killable. These changes reduce the mmap_sem hold time, which is crucial during OOM killer invocation. Port these changes to tile. Signed-off-by: NKautuk Consul <consul.kautuk@gmail.com> [cmetcalf@tilera.com: initialize "flags" after "write" updated.] Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
If the kernel unexpectedly takes a bad trap, it's convenient to have it report the type of trap as part of the error. This gives customers a bit more context before they call up customer support. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
This just adds a few more attributes to the information Linux can query from the hypervisor for the /sys/hypervisor/board/ directory, providing part, serial#, revision#, and description for cpu modules (as opposed to the board itself, or any mezzanine boards). Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
The hardwall drain code was not properly implemented for tilegx, just tilepro, so you couldn't reliably restart an application that made use of the udn. In addition, the code was only applicable to the udn (user dynamic network). On tilegx there is a second user network that is available (the "idn"), and there is support for having I/O shims deliver user-level interrupts to applications ("ipi") which functions in a very similar way to the inter-core permissions used for udn/idn. So this change also generalizes the code from supporting just the udn to supports udn/idn/ipi on tilegx. By default we now use /dev/hardwall/{udn,idn,ipi} with separate minor numbers for the three devices. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
This change adds support for a new "super" bit in the PTE, using the new arch_make_huge_pte() method. The Tilera hypervisor sees the bit set at a given level of the page table and gangs together 4, 16, or 64 consecutive pages from that level of the hierarchy to create a larger TLB entry. One extra "super" page size can be specified at each of the three levels of the page table hierarchy on tilegx, using the "hugepagesz" argument on the boot command line. A new hypervisor API is added to allow Linux to tell the hypervisor how many PTEs to gang together at each level of the page table. To allow pre-allocating huge pages larger than the buddy allocator can handle, this change modifies the Tilera bootmem support to put all of memory on tilegx platforms into bootmem. As part of this change I eliminate the vestigial CONFIG_HIGHPTE support, which never worked anyway, and eliminate the hv_page_size() API in favor of the standard vma_kernel_pagesize() API. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
We already had a syscall that did some dcache flushing, but it was not used in practice. Make it MIPS compatible instead so it can do both the DCACHE and ICACHE actions. We have code that wants to be able to use the ICACHE flush mode from userspace so this change enables that. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
This change introduces new flags for the hv_install_context() API that passes a page table pointer to the hypervisor. Clients can explicitly request 4K, 16K, or 64K small pages when they install a new context. In practice, the page size is fixed at kernel compile time and the same size is always requested every time a new page table is installed. The <hv/hypervisor.h> header changes so that it provides more abstract macros for managing "page" things like PFNs and page tables. For example there is now a HV_DEFAULT_PAGE_SIZE_SMALL instead of the old HV_PAGE_SIZE_SMALL. The various PFN routines have been eliminated and only PA- or PTFN-based ones remain (since PTFNs are always expressed in fixed 2KB "page" size). The page-table management macros are renamed with a leading underscore and take page-size arguments with the presumption that clients will use those macros in some single place to provide the "real" macros they will use themselves. I happened to notice the old hv_set_caching() API was totally broken (it assumed 4KB pages) so I changed it so it would nominally work correctly with other page sizes. Tag modules with the page size so you can't load a module built with a conflicting page size. (And add a test for SMP while we're at it.) Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
Use direct load/store for the get_user/put_user. Previously, we would call out to a helper routine that would do the appropriate thing and then return, handling the possible exception internally. Now we inline the load or store, along with a "we succeeded" indication in a register; if the load or store faults, we write a "we failed" indication into the same register and then return to the following instruction. This is more efficient and gives us more compact code, as well as being more in line with what other architectures do. The special futex assembly source file for TILE-Gx also disappears in this change; we just use the same inlining idiom there as well, putting the appropriate atomic operations directly into futex_atomic_op_inuser() (and thus into the FUTEX_WAIT function). The underlying atomic copy_from_user, copy_to_user functions were renamed using the (cryptic) x86 convention as copy_from_user_ll and copy_to_user_ll. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
The toolchain supports big-endian mode now, so add support for building the kernel to run big-endian as well. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
The change adds some infrastructure for managing tile pmd's more generally, using pte_pmd() and pmd_pte() methods to translate pmd values to and from ptes, since on TILEPro a pmd is really just a nested structure holding a pgd (aka pte). Several existing pmd methods are moved into this framework, and a whole raft of additional pmd accessors are defined that are used by the transparent hugepage framework. The tile PTE now has a "client2" bit. The bit is used to indicate a transparent huge page is in the process of being split into subpages. This change also fixes a generic bug where the return value of the generic pmdp_splitting_flush() was incorrect. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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由 Chris Metcalf 提交于
In general we want to avoid ever touching memory while within an interrupt critical section, since the page fault path goes through a different path from the hypervisor when in an interrupt critical section, and we carefully decided with tilegx that we didn't need to support this path in the kernel. (On tilepro we did implement that path as part of supporting atomic instructions in software.) In practice we always need to touch the kernel stack, since that's where we store the interrupt state before releasing the critical section, but this change cleans up a few things. The IRQ_ENABLE macro is split up so that when we want to enable interrupts in a deferred way (e.g. for cpu_idle or for interrupt return) we can read the per-cpu enable mask before entering the critical section. The cache-migration code is changed to use interrupt masking instead of interrupt critical sections. And, the interrupt-entry code is changed so that we defer loading "tp" from per-cpu data until after we have released the interrupt critical section. Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
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- 25 5月, 2012 13 次提交
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由 Jonas Bonn 提交于
As per commits 2922585b ("lib: Sparc's strncpy_from_user is generic enough, move under lib/") and 92ae03f2 ("x86: merge 32/64-bit versions of 'strncpy_from_user()' and speed it up"), and corresponding discussion on linux-arch. Signed-off-by: NJonas Bonn <jonas@southpole.se> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Russell King 提交于
This function is used by modules (such as the SA1111 PCMCIA driver) so it needs to be exported. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
out[bwl]() had a side effect that gcc read-back from the register after writing its value. This causes a problem for at least 3c589_cs, which spits out lots of "adapter failure, FIFO diagnostic register 2011." Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Edgar E. Iglesias 提交于
Setup a pointer to the TLS area in copy_thread. r10 is 6th argumetn which contains TLS area. And r21 is the thread reg. Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: NDavid Holsgrove <david.holsgrove@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Edgar E. Iglesias 提交于
Formerly unused Args 4/5 now load parent tid / child tid so the brid to do_fork can pick up TLS from r10. Arg 3 still unused There is also necessary to fix old glibc which do not setup r9/r10 (arg 4/5). Simple clearing them is fine. Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: NDavid Holsgrove <david.holsgrove@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Selftest for dynamic ftrace requres to pass address of the first calling instruction because hash function is calculated from it. ftrace_update_ftrace_func setups pointer to function which is called in _mcount function. trace_selftest is not aware about instruction size (for microblaze 8 - imm and addik) and that's why we have to pass in r5 address of imm not addik which is in r15.12 For more info look at ftrace_ops_list_func/ftrace.c. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Kautuk Consul 提交于
Commit d065bd81 (mm: retry page fault when blocking on disk transfer) and commit 37b23e05 (x86,mm: make pagefault killable) The above commits introduced changes into the x86 pagefault handler for making the page fault handler retryable as well as killable. These changes reduce the mmap_sem hold time, which is crucial during OOM killer invocation. Port these changes to microblaze. Signed-off-by: NKautuk Consul <consul.kautuk@gmail.com>
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由 Lars-Peter Clausen 提交于
The microblaze architecture does not provide a native GPIO API implementation nor requires GPIOLIB, but still selects GENERIC_GPIO by default. As a result the following build error occurs, if GPIOLIB is not selected: include/asm-generic/gpio.h: In function 'gpio_get_value_cansleep': include/asm-generic/gpio.h:218: error: implicit declaration of function '__gpio_get_value' include/asm-generic/gpio.h: In function 'gpio_set_value_cansleep': include/asm-generic/gpio.h:224: error: implicit declaration of function '__gpio_set_value' This patch addresses the issue by not selecting GENERIC_GPIO by default. This causes the GPIO API to be stubbed out if no implementation is provided. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Cc: stable@vger.kernel.org Tested-by: NMichal Simek <monstr@monstr.eu>
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由 David S. Miller 提交于
We need to use TASK_SIZE because for 64-bit tasks the value of STACK_TOP actually sits in the middle of the address space so we'll get false-negatives. Adjust the TASK_SIZE definition on sparc64 to accomodate this, in the context in which user_addr_max() is used we have the test_thread_flag() definition available but not the one for test_tsk_thread_flag(). Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
To use this, an architecture simply needs to: 1) Provide a user_addr_max() implementation via asm/uaccess.h 2) Add "select GENERIC_STRNCPY_FROM_USER" to their arch Kcnfig 3) Remove the existing strncpy_from_user() implementation and symbol exports their architecture had. Signed-off-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NDavid Howells <dhowells@redhat.com>
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由 David S. Miller 提交于
And make sure that everything using it explicitly includes that header file. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Hide details of maximum user address calculation in a new asm/uaccess.h interface named user_addr_max(). Provide little-endian implementation in find_zero(), which should work but can probably be improved. Abstrace alignment check behind IS_UNALIGNED() macro. Kill double-semicolon, noticed by David Howells. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Michael Cree 提交于
These functions are used in some PCI drivers with big-endian MMIO space. Admittedly it is almost certain that no one this side of the Moon would use such a card in an Alpha but it does get us closer to being able to build allyesconfig or allmodconfig, and it enables the Debian default generic config to build. Tested-by: NRaúl Porcel <armin76@gentoo.org> Signed-off-by: NMichael Cree <mcree@orcon.net.nz> Signed-off-by: NMatt Turner <mattst88@gmail.com>
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