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2008-02-09x86: introduce page pool in cpaThomas Gleixner
DEBUG_PAGEALLOC was not possible on 64-bit due to its early-bootup hardcoded reliance on PSE pages, and the unrobustness of the runtime splitup of large pages. The splitup ended in recursive calls to alloc_pages() when a page for a pte split was requested. Avoid the recursion with a preallocated page pool, which is used to split up large mappings and gets refilled in the return path of kernel_map_pages after the split has been done. The size of the page pool is adjusted to the available memory. This part just implements the page pool and the initialization w/o using it yet. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-09x86: construct 32-bit boot time page tables in native format.Ian Campbell
Specifically the boot time page tables in a CONFIG_X86_PAE=y enabled kernel are in PAE format. early_ioremap is updated to use the standard page table accessors. Clear any mappings beyond max_low_pfn from the boot page tables in native_pagetable_setup_start because the initial mappings can extend beyond the range of physical memory and into the vmalloc area. Derived from patches by Eric Biederman and H. Peter Anvin. [ jeremy@goop.org: PAE swapper_pg_dir needs to be page-sized fix ] Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Mika Penttilä <mika.penttila@kolumbus.fi> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86: fix sparse warnings in acpi/bus.cHarvey Harrison
Add function definition and extern variables to asm-x86/acpi.h. All of these are used in bus.c in ifdef(CONFIG_X86) sections, so are only added to the x86 include headers. boot.c already includes acpi.h so no changes are needed there. Fixes the following: arch/x86/kernel/acpi/boot.c:83:4: warning: symbol 'acpi_sci_flags' was not declared. Should it be static? arch/x86/kernel/acpi/boot.c:84:5: warning: symbol 'acpi_sci_override_gsi' was not declared. Should it be static? arch/x86/kernel/acpi/boot.c:421:13: warning: symbol 'acpi_pic_sci_set_trigger' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86: sparse warnings in pageattr.cHarvey Harrison
Adjust the definition of lookup_address to take an unsigned long level argument. Adjust callers in xen/mmu.c that pass in a dummy variable. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86: GEODE: MFGPT: Use "just-in-time" detection for the MFGPT timersJordan Crouse
There isn't much value to always detecting the MFGPT timers on Geode platforms; detection is only needed when something wants to use the timers. Move the detection code so that it gets called the first time a timer is allocated. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86: GEODE: MFGPT: make mfgpt_timer_setup available outside of mfgpt_32.cAndres Salomon
We need to be called from elsewhere, and this gets some #ifdefs out of the .c file. Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86: GEODE: MFGPT: drop module owner usage from MFGPT APIAndres Salomon
We had planned to use the 'owner' field for allowing re-allocation of MFGPTs; however, doing it by module owner name isn't flexible enough. So, drop this for now. If it turns out that we need timers in modules, we'll need to come up with a scheme that matches the write-once fields of the MFGPTx_SETUP register, and drops ponies from the sky. Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-08x86: fix pgtable_t build breakageIngo Molnar
Commit 2f569afd9ced9ebec9a6eb3dbf6f83429be0a7b4 ("CONFIG_HIGHPTE vs. sub-page page tables") caused some build breakage due to pgtable_t only getting declared in the CONFIG_X86_PAE case. Move the declaration outside the PAE section. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08CONFIG_HIGHPTE vs. sub-page page tables.Martin Schwidefsky
Background: I've implemented 1K/2K page tables for s390. These sub-page page tables are required to properly support the s390 virtualization instruction with KVM. The SIE instruction requires that the page tables have 256 page table entries (pte) followed by 256 page status table entries (pgste). The pgstes are only required if the process is using the SIE instruction. The pgstes are updated by the hardware and by the hypervisor for a number of reasons, one of them is dirty and reference bit tracking. To avoid wasting memory the standard pte table allocation should return 1K/2K (31/64 bit) and 2K/4K if the process is using SIE. Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means the s390 version for pte_alloc_one cannot return a pointer to a struct page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one cannot return a pointer to a pte either, since that would require more than 32 bit for the return value of pte_alloc_one (and the pte * would not be accessible since its not kmapped). Solution: The only solution I found to this dilemma is a new typedef: a pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a later patch. For everybody else it will be a (struct page *). The additional problem with the initialization of the ptl lock and the NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and a destructor pgtable_page_dtor. The page table allocation and free functions need to call these two whenever a page table page is allocated or freed. pmd_populate will get a pgtable_t instead of a struct page pointer. To get the pgtable_t back from a pmd entry that has been installed with pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page call in free_pte_range and apply_to_pte_range. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08asm-*/posix_types.h: scrub __GLIBC__Mike Frysinger
Some arches (like alpha and ia64) already have a clean posix_types.h header. This brings all the others in line by removing all references to __GLIBC__ (and some undocumented __USE_ALL). Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUTDavid Howells
Suppress A.OUT library support if CONFIG_ARCH_SUPPORTS_AOUT is not set. Not all architectures support the A.OUT binfmt, so the ELF binfmt should not be permitted to go looking for A.OUT libraries to load in such a case. Not only that, but under such conditions A.OUT core dumps are not produced either. To make this work, this patch also does the following: (1) Makes the existence of the contents of linux/a.out.h contingent on CONFIG_ARCH_SUPPORTS_AOUT. (2) Renames dump_thread() to aout_dump_thread() as it's only called by A.OUT core dumping code. (3) Moves aout_dump_thread() into asm/a.out-core.h and makes it inline. This is then included only where needed. This means that this bit of arch code will be stored in the appropriate A.OUT binfmt module rather than the core kernel. (4) Drops A.OUT support for Blackfin (according to Mike Frysinger it's not needed) and FRV. This patch depends on the previous patch to move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT format is available. [jdike@addtoit.com: uml: re-remove accidentally restored code] Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08aout: move STACK_TOP[_MAX] to asm/processor.hDavid Howells
Move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT format is available. Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Add cmpxchg64 and cmpxchg64_local to x86_64Mathieu Desnoyers
Make sure that at least cmpxchg64_local is available on all architectures to use for unsigned long long values. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Andi Kleen <ak@muc.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Sanitize the type of struct user.u_ar0H. Peter Anvin
struct user.u_ar0 is defined to contain a pointer offset on all architectures in which it is defined (all architectures which define an a.out format except SPARC.) However, it has a pointer type in the headers, which is pointless -- <asm/user.h> is not exported to userspace, and it just makes the code messy. Redefine the field as "unsigned long" (which is the same size as a pointer on all Linux architectures) and change the setting code to user offsetof() instead of hand-coded arithmetic. Cc: Linux Arch Mailing List <linux-arch@vger.kernel.org> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Håvard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Cleanup asm/{elf,page,user}.h: #ifdef __KERNEL__ is no longer neededKirill A. Shutemov
asm/elf.h, asm/page.h and asm/user.h don't export to userspace now, so we can drop #ifdef __KERNEL__ for them. [k.shutemov@gmail.com: remove #ifdef __KERNEL_] Signed-off-by: Kirill A. Shutemov <k.shutemov@gmail.com> Reviewed-by: David Woodhouse <dwmw2@infradead.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kirill A. Shutemov <k.shutemov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Unexport asm/user.h and linux/user.hKirill A. Shutemov
Do not export asm/user.h and linux/user.h during make headers_install. Signed-off-by: Kirill A. Shutemov <k.shutemov@gmail.com> Reviewed-by: David Woodhouse <dwmw2@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07Introduce flags for reserve_bootmem()Bernhard Walle
This patchset adds a flags variable to reserve_bootmem() and uses the BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions between crashkernel area and already used memory. This patch: Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE. If that flag is set, the function returns with -EBUSY if the memory already has been reserved in the past. This is to avoid conflicts. Because that code runs before SMP initialisation, there's no race condition inside reserve_bootmem_core(). [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix powerpc build] Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-07tty: fix tty network driver interactions with TCGET/TCSET calls (x86 fix)Dave Miller
And to go with it Dave's type checking x86 termios headers. I've updated these as the original sent by Dave had some wrong types in it. Signed-off-by: Alan Cox <alan@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86: fix deadlock, make pgd_lock irq-safe virtio: fix trivial build bug x86: fix mttr trimming x86: delay CPA self-test and repeat it x86: fix 64-bit sections generic: add __FINITDATA x86: remove suprious ifdefs from pageattr.c x86: mark the .rodata section also NX x86: fix iret exception recovery on 64-bit cpuidle: dubious one-bit signed bitfield in cpuidle.h x86: fix sparse warnings in powernow-k8.c x86: fix sparse error in traps_32.c x86: trivial sparse/checkpatch in quirks.c x86 ptrace: disallow null cs/ss MAINTAINERS: RDC R-321x SoC maintainer brk randomization: introduce CONFIG_COMPAT_BRK brk: check the lower bound properly x86: remove X2 workaround x86: make spurious fault handler aware of large mappings x86: make traps on entry code be debuggable in user space, 64-bit
2008-02-06x86: fix deadlock, make pgd_lock irq-safeIngo Molnar
lockdep just caught this one: ================================= [ INFO: inconsistent lock state ] 2.6.24 #38 --------------------------------- inconsistent {in-softirq-W} -> {softirq-on-W} usage. swapper/1 [HC0[0]:SC0[0]:HE1:SE1] takes: (pgd_lock){-+..}, at: [<ffffffff8022a9ea>] mm_init+0x1da/0x250 {in-softirq-W} state was registered at: [<ffffffffffffffff>] 0xffffffffffffffff irq event stamp: 394559 hardirqs last enabled at (394559): [<ffffffff80267f0a>] get_page_from_freelist+0x30a/0x4c0 hardirqs last disabled at (394558): [<ffffffff80267d25>] get_page_from_freelist+0x125/0x4c0 softirqs last enabled at (393952): [<ffffffff80232f8e>] __do_softirq+0xce/0xe0 softirqs last disabled at (393945): [<ffffffff8020c57c>] call_softirq+0x1c/0x30 other info that might help us debug this: no locks held by swapper/1. stack backtrace: Pid: 1, comm: swapper Not tainted 2.6.24 #38 Call Trace: [<ffffffff8024e1fb>] print_usage_bug+0x18b/0x190 [<ffffffff8024f55d>] mark_lock+0x53d/0x560 [<ffffffff8024fffa>] __lock_acquire+0x3ca/0xed0 [<ffffffff80250ba8>] lock_acquire+0xa8/0xe0 [<ffffffff8022a9ea>] ? mm_init+0x1da/0x250 [<ffffffff809bcd10>] _spin_lock+0x30/0x70 [<ffffffff8022a9ea>] mm_init+0x1da/0x250 [<ffffffff8022aa99>] mm_alloc+0x39/0x50 [<ffffffff8028b95a>] bprm_mm_init+0x2a/0x1a0 [<ffffffff8028d12b>] do_execve+0x7b/0x220 [<ffffffff80209776>] sys_execve+0x46/0x70 [<ffffffff8020c214>] kernel_execve+0x64/0xd0 [<ffffffff8020901e>] ? _stext+0x1e/0x20 [<ffffffff802090ba>] init_post+0x9a/0xf0 [<ffffffff809bc5f6>] ? trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff8024f75a>] ? trace_hardirqs_on+0xba/0xd0 [<ffffffff8020c1a8>] ? child_rip+0xa/0x12 [<ffffffff8020bcbc>] ? restore_args+0x0/0x44 [<ffffffff8020c19e>] ? child_rip+0x0/0x12 turns out that pgd_lock has been used on 64-bit x86 in an irq-unsafe way for almost two years, since commit 8c914cb704a11460e. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-06Fix __const_udelay declaration and definition mismatchesJeff Dike
The declaration and implementation of __const_udelay use different names for the parameter on a number of architectures: include/asm-avr32/delay.h:15:extern void __const_udelay(unsigned long usecs); arch/avr32/lib/delay.c:39:inline void __const_udelay(unsigned long xloops) include/asm-sh/delay.h:15:extern void __const_udelay(unsigned long usecs); arch/sh/lib/delay.c:22:inline void __const_udelay(unsigned long xloops) include/asm-m32r/delay.h:15:extern void __const_udelay(unsigned long usecs); arch/m32r/lib/delay.c:58:void __const_udelay(unsigned long xloops) include/asm-x86/delay.h:16:extern void __const_udelay(unsigned long usecs); arch/x86/lib/delay_32.c:82:inline void __const_udelay(unsigned long xloops) arch/x86/lib/delay_64.c:46:inline void __const_udelay(unsigned long xloops) The units of the parameter isn't usecs, so that name is definitely wrong. It's also not exactly loops, so I suppose xloops is an OK name. This patch changes these names from usecs to xloops. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06read_current_timer() cleanupsAndrew Morton
- All implementations can be __devinit - The function prototypes were in asm/timex.h but they all must be the same, so create a single declaration in linux/timex.h. - uninline the sparc64 version to match the other architectures - Don't bother #defining ARCH_HAS_READ_CURRENT_TIMER to a particular value. [ezk@cs.sunysb.edu: fix build] Cc: "David S. Miller" <davem@davemloft.net> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05add mm argument to pte/pmd/pud/pgd_freeBenjamin Herrenschmidt
(with Martin Schwidefsky <schwidefsky@de.ibm.com>) The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as first argument. The free functions do not get the mm_struct argument. This is 1) asymmetrical and 2) to do mm related page table allocations the mm argument is needed on the free function as well. [kamalesh@linux.vnet.ibm.com: i386 fix] [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05i386: Resolve dependency of asm-i386/pgtable.h on highmem.hChristoph Lameter
pgtable.h does not include highmem.h but uses various constants from highmem.h. We cannot include highmem.h because highmem.h will in turn include many other include files that also depend on pgtable.h So move the definitions from highmem.h into pgtable.h. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05iommu sg: kill __clear_bit_string and find_next_zero_stringFUJITA Tomonori
This kills unused __clear_bit_string and find_next_zero_string (they were used by only gart and calgary IOMMUs). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Muli Ben-Yehuda <mulix@mulix.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05timerfd: wire the new timerfd API to the x86 familyDavide Libenzi
Wires up the new timerfd API to the x86 family. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (78 commits) x86: fix RTC lockdep warning: potential hardirq recursion x86: cpa, micro-optimization x86: cpa, clean up code flow x86: cpa, eliminate CPA_ enum x86: cpa, cleanups x86: implement gbpages support in change_page_attr() x86: support gbpages in pagetable dump x86: add gbpages support to lookup_address x86: add pgtable accessor functions for gbpages x86: add PUD_PAGE_SIZE x86: add feature macros for the gbpages cpuid bit x86: switch direct mapping setup over to set_pte x86: fix page-present check in cpa_flush_range x86: remove cpa warning x86: remove now unused clear_kernel_mapping x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_mapping() x86: cpa selftest, skip non present entries x86: CPA fix pagetable split x86: rename LARGE_PAGE_SIZE to PMD_PAGE_SIZE x86: cpa, fix lookup_address ...
2008-02-04x86: add pgtable accessor functions for gbpagesAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: add PUD_PAGE_SIZEAndi Kleen
a PUD entry covers 1GB of virtual memory. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: add feature macros for the gbpages cpuid bitAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: remove now unused clear_kernel_mappingAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: rename LARGE_PAGE_SIZE to PMD_PAGE_SIZEAndi Kleen
Fix up all users. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: cpa, add the PAT bit definesAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: fix EFI mappingHuang, Ying
The patch updates EFI runtime memory mapping code, by making EFI areas explicitly executable. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: add function prototype to vm86.hHarvey Harrison
Global functions should include their prototypes. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: add include to cpu/intel.cHarvey Harrison
Fixes sparse warning: arch/x86/kernel/cpu/intel.c:48:15: warning: symbol 'ppro_with_ram_bug' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: remove final FASTCALL() usesHarvey Harrison
A few snuck back in to x86. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: remove special NUMAQ support in io_32.hAndi Kleen
Now that the only user does it on its own remove the NUMAQ support macros in io_32.h The next step would be to convert the preprocessor mess to actually readable standard inlines. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: move NUMAQ io handling into arch/x86/pci/numa.cAndi Kleen
numa.c is the only user of the {in,out}*_quad functions. And it has only a few call sites. Change them to open code the magic NUMAQ port access. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: update reference for PAE tlb flushingJeremy Fitzhardinge
Remove bogus reference to "Pentium-II erratum A13" and point to the actual canonical source of information about what requirements x86 processors have for PAE pagetable updates. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: pud_clear: only reload cr3 if necessaryJeremy Fitzhardinge
Rather than unconditionally reloading cr3, only do so if the pud we're updating is within the active pgd. This eliminates TLB flushes most of the time. The performance-critical uses of pud_clear are during execve and exit, but in those cases cr3 is referring to some other pagetable. The only other use of pud_clear is during a large (1Gbyte+) munmap, and those are sufficiently rare that a couple of cr3 reloads won't hurt. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: revert "defer cr3 reload when doing pud_clear()"Jeremy Fitzhardinge
Revert "defer cr3 reload when doing pud_clear()" since I'm going to replace it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: sparse errors from string_32.hHarvey Harrison
include/asm/string_32.h:216:26: warning: cast truncates bits from constant value (cccccccc becomes cc) include/asm/string_32.h:219:27: warning: cast truncates bits from constant value (cccccccc becomes cccc) include/asm/string_32.h:222:27: warning: cast truncates bits from constant value (cccccccc becomes cccc) include/asm/string_32.h:223:30: warning: cast truncates bits from constant value (cccccccc becomes cc) Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: unify CPU feature string namesH. Peter Anvin
Move the CPU feature string names to a separate file (common to 32 and 64 bits); additionally, make <asm/cpufeature.h> includable by host code in preparation for including the CPU feature strings in the boot code. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: reintroduce volatile keyword in prototype to clflush()H. Peter Anvin
The volatile keyword was removed from the clflush() prototype in commit e34907ae180f4fe6c28bb4516c679c2f81b0c9ed; the comment there states: x86: remove volatile keyword from clflush. the p parameter is an explicit memory reference, and is enough to prevent gcc to being nasty here. The volatile seems completely not needed. This reflects incorrect understanding of the function of the volatile keyword there. The purpose of the volatile keyword is informing gcc that it is safe to pass a volatile pointer to this function. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_64.hH. Peter Anvin
Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in include/asm-x86/uaccess_64.h. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_32.hH. Peter Anvin
Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in include/asm-x86/uaccess_32.h. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: use _ASM_EXTABLE macro in include/asm-x86/system.hH. Peter Anvin
Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in include/asm-x86/system.h. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: use _ASM_EXTABLE macro in include/asm-x86/msr.hH. Peter Anvin
Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in include/asm-x86/msr.h. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: use _ASM_EXTABLE macro in include/asm-x86/i387.hH. Peter Anvin
Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding __ex_table entires in include/asm-x86/i387.h. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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