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2007-11-17x86: fix reboot with no keyboard attachedTruxton Fulton1-1/+1
Attempt to fix http://bugzilla.kernel.org/show_bug.cgi?id=8378 Hiroto Shibuya wrote to tell me that he has a VIA EPIA-EK10000 which suffers from the reboot problem when no keyboard is attached. My first patch works for him: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=59f4e7d572980a521b7bdba74ab71b21f5995538 But the latest patch does not work for him : http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8b93789808756bcc1e5c90c99f1b1ef52f839a51 We found that it was necessary to also set the "disable keyboard" flag in the command byte, as the first patch was doing. The second patch tries to minimally modify the command byte, but it is not enough. Please consider this simple one-line patch to help people with low end VIA motherboards reboot when no keyboard is attached. Hiroto Shibuya has verified that this works for him (as I no longer have an afflicted machine). Additional discussion: Note that original patch from Truxton DOES disable keyboard and this has been in main tree since 2.6.14, thus it must have quite a bit of air time already. http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.14.y.git;a=commit;h=59f4e7d572980a521b7bdba74ab71b21f5995538 Note that he only mention "System flag" in the description and comment, but in the code, "disable keyboard" flag is set. outb(0x14, 0x60); /* set "System flag" */ In 2.6.23, he made a change to read the current byte and then mask the flags, but along this change, he only set the "System flag" and dropped the setting of "disable keyboard" flag. http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.23.y.git;a=commit;h=8b93789808756bcc1e5c90c99f1b1ef52f839a51 outb(cmd | 0x04, 0x60); /* set "System flag" */ So my request is to restore the setting of disable keyboard flag which has been there since 2.6.14 but disappeared in 2.6.23. Cc: Lee Garrett <lee-in-berlin@web.de> Cc: "Hiroto Shibuya" <hiroto.shibuya@gmail.com> Cc: Natalie Protasevich <protasnb@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Aristeu Rozanski <aris@ruivo.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-17x86: voyager use correct header file nameRandy Dunlap1-1/+1
Fix header file name for Voyager build. In file included from arch/x86/kernel/setup_32.c:61: include/asm-x86/mach-voyager/setup_arch.h:2:26: error: asm/setup_32.h: No such file or directory make[1]: *** [arch/x86/kernel/setup_32.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-17x86: fix bogus memcpy in es7000_check_dsdt()Thomas Gleixner1-3/+3
es7000_check_dst() contains a memcpy from 0, which probably should have been a memset. Remove it and check the retunr value from acpi_get_table_header. Noticed by: Joe Perches <joe@perches.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-14oprofile: fix oops on x86 32-bitJan Blunck1-1/+1
x86 32-bit isn't saving the stack pointer to pt_regs->esp when an interrupt occurs. Signed-off-by: Jan Blunck <jblunck@suse.de> Tested-by: Robert Fitzsimons <robfitz@273k.net> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-12x86: fix taking DNA during 64bit sigreturnSiddha, Suresh B1-0/+5
restore sigcontext is taking a DNA exception while restoring FP context from the user stack, during the sigreturn. Appended patch fixes it by doing clts() if the app doesn't touch FP during the signal handler execution. This will stop generating a DNA, during the fxrstor in the sigreturn. This improves 64-bit lat_sig numbers by ~30% on my core2 platform. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-10voyager: use struct instead of PARAMRandy Dunlap1-1/+3
Use struct boot_params instead of PARAM + 0xoffsets. Fixes one of many Voyager build problems. arch/x86/kernel/setup_32.c:543: error: 'PARAM' undeclared (first use in this function) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-05lguest: make async_hcall() staticAdrian Bunk1-3/+0
async_hcall() can become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-11-03Merge branch 'v2.6.24-rc1-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdepLinus Torvalds2-0/+41
* 'v2.6.24-rc1-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep: lockdep: fix a typo in the __lock_acquire comment sched: fix unconditional irq lock lockdep: fixup irq tracing
2007-10-30x86 gart: rename symbols only used for the GART implementationJoerg Roedel1-6/+6
This patch renames the 4 symbols iommu_hole_init(), iommu_aperture, iommu_aperture_allowed, iommu_aperture_disabled. All these symbols are only used for the GART implementation of IOMMUs. It adds and additional gart_ prefix to them. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-30x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMUJoerg Roedel2-2/+2
This patch renames the IOMMU config option to GART_IOMMU because in fact it means the GART and not general support for an IOMMU on x86. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-30x86 gart: rename iommu.h to gart.hJoerg Roedel2-2/+31
This patch renames the include file asm-x86/iommu.h to asm-x86/gart.h to make clear to which IOMMU implementation it belongs. The patch also adds "GART" to the Kconfig line. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-27Revert "i386: export i386 smp_call_function_mask() to modules"Thomas Gleixner1-3/+6
This reverts commit 6442eea937ef797d4b66733f49c82e2fdc2aca6f. The patch breaks smp_ops and needs to be reverted. The solution to allow modular build of KVM is to export smp_ops instead. Pointed-out-by: James Bottomley <jejb> tglx, so write out 100 times "voyager is a useful architecture" ... <tglx> yes, Sir Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-25x86 bitops: fix code style issuesRandy Dunlap1-26/+26
Coding style cleanups: - change __inline__ to inline; - drop space in "* addr" parameters; - drop space between func. name and '(' The "volatile" keywords are correct according to email from one Linus Torvalds. [Several other arches need some of this also.] Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-25bitops kernel-doc: inline instead of macroRandy Dunlap2-4/+10
Use duplicated inline functions for test_and_set_bit_lock() on x86 instead of #define macros, thus avoiding a bad example. This allows kernel-doc to run cleanly instead of terminating with an error: Error(linux-2.6.24-rc1//include/asm-x86/bitops_32.h:188): cannot understand prototype: 'test_and_set_bit_lock test_and_set_bit ' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-25lockdep: fixup irq tracingPeter Zijlstra2-0/+41
Ensure we fixup the IRQ state before we hit any locking code. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-25lguest: documentation updateRusty Russell1-8/+8
Went through the documentation doing typo and content fixes. This patch contains only comment and whitespace changes. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23x86: clean up setup.h and the boot codeH. Peter Anvin1-6/+7
Make <asm/setup.h> usable by the boot code. Clean up vestiges of the old command-line protocol from setup.h and head_32.S (it is still supported from the boot loader point of view, since it is converted to the new command-line protocol by the boot code.) Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: Save registers in saved_context during suspend and hibernationRafael J. Wysocki1-16/+7
During hibernation and suspend on x86_64 save CPU registers in the saved_context structure rather than in a handful of separate variables. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge setup_32/64.hThomas Gleixner4-95/+60
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge signal_32/64.hThomas Gleixner4-425/+263
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge required-features.hBrian Gerst3-104/+70
Signed-off-by: Brian Gerst <bgerst@didntduck.org>
2007-10-23x86: merge sigcontext_32/64.hThomas Gleixner4-154/+137
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge msr_32/64.hThomas Gleixner4-360/+347
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge mttr_32/64.hThomas Gleixner4-281/+163
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge statfs_32/64.hThomas Gleixner4-77/+61
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge stat_32/64.hThomas Gleixner4-134/+112
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge shmbuf_32/64.hThomas Gleixner4-94/+50
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge ptrace_32/64.hThomas Gleixner4-158/+141
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge msgbuf_32/64.hThomas Gleixner4-72/+38
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge elf_32/64.hThomas Gleixner4-358/+288
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge byteorder_32/64.hThomas Gleixner4-104/+70
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: unify div64{,_32,_64}.hChris Snook3-56/+57
Unify x86 div64.h headers. Signed-off-by: Chris Snook <csnook@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: unify a.out{,_32,_64}.hChris Snook4-65/+25
Unify x86 a.out_32.h and a.out_64.h [ tglx: Kbuild fixup ] Signed-off-by: Chris Snook <csnook@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: add safe_smp_processor_id for x86_64Hiroshi Shimamoto1-0/+2
Preperatory patch to allow crash_32/64.c merging Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: add lapic_shutdown for x86_64Hiroshi Shimamoto1-0/+1
Preperatory patch to allow crash_32/64.c merging Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: merge mmu{,_32,_64}.hChris Snook3-43/+22
Merge mmu_32.h and mmu_64.h into mmu.h. Signed-off-by: Chris Snook <csnook@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23x86: lock bitopsNick Piggin2-2/+83
I missed an obvious one! x86 CPUs are defined not to reorder stores past earlier loads, so there is no hardware memory barrier required to implement a release-consistent store (all stores are, by definition). So ditch the generic lock bitops, and implement optimised versions for x86, which removes the mfence from __clear_bit_unlock (which is already a useful primitive for SLUB). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-23Remove old lguest I/O infrrasructure.Rusty Russell1-2/+1
This patch gets rid of the old lguest host I/O infrastructure and replaces it with a single hypercall "LHCALL_NOTIFY" which takes an address. The main change is the removal of io.c: that mainly did inter-guest I/O, which virtio doesn't yet support. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23Boot with virtual == physical to get closer to native Linux.Rusty Russell1-2/+5
1) This allows us to get alot closer to booting bzImages. 2) It means we don't have to know page_offset. 3) The Guest needs to modify the boot pagetables to create the PAGE_OFFSET mapping before jumping to C code. 4) guest_pa() walks the page tables rather than using page_offset. 5) We don't use page_offset to figure out whether to emulate: it was always kinda quesationable, and won't work for instructions done before remapping (bzImage unpacking in particular). 6) We still want the kernel address for tlb flushing: have the initial hypercall give us that, too. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23Make hypercalls arch-independent.Jes Sorensen1-3/+5
Clean up the hypercall code to make the code in hypercalls.c architecture independent. First process the common hypercalls and then call lguest_arch_do_hcall() if the call hasn't been handled. Rename struct hcall_ring to hcall_args. This patch requires the previous patch which reorganize the layout of struct lguest_regs on i386 so they match the layout of struct hcall_args. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23Reorder guest saved regs to match hyperall orderJes Sorensen1-2/+1
Move eax next to ebx/ecx/edx in struct lguest_regs on i386, so they will be located together and allow it to map directly to a struct hcall_ring entry (which will be renamed struct hcall_args as in a subsequent patch). This is in preparation for making the code hcall code architecture independent. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23Move i386 part of core.c to x86/core.c.Jes Sorensen1-0/+87
Separate i386 architecture specific from core.c and move it to x86/core.c and add x86/lguest.h header file to match. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-23Move lguest hcalls to arch-specific headerJes Sorensen1-0/+67
Move architecture specific portion of lg_hcall code to asm-i386/lg_hcall.h and have it included from linux/lguest.h. [Changed to asm-i386/lguest_hcall.h so documentation finds it -RR] Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Jes Sorensen <jes@sgi.com>
2007-10-23Make asm-x86/bootparam.h includable from userspace.Rusty Russell6-101/+91
To actually write a bootloader (or, say, the lguest launcher) currently requires duplication of these structures. Making them includable from userspace is much nicer. We merge the common userspace-required definitions of e820_32/64.h into e820.h for export. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2007-10-22Merge branch 'sg' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds3-4/+10
* 'sg' of git://git.kernel.dk/linux-2.6-block: Add CONFIG_DEBUG_SG sg validation Change table chaining layout Update arch/ to use sg helpers Update swiotlb to use sg helpers Update net/ to use sg helpers Update fs/ to use sg helpers [SG] Update drivers to use sg helpers [SG] Update crypto/ to sg helpers [SG] Update block layer to use sg helpers [SG] Add helpers for manipulating SG entries
2007-10-22Add CONFIG_DEBUG_SG sg validationJens Axboe2-0/+6
Add a Kconfig entry which will toggle some sanity checks on the sg entry and tables. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-22Change table chaining layoutJens Axboe3-4/+4
Change the page member of the scatterlist structure to be an unsigned long, and encode more stuff in the lower bits: - Bits 0 and 1 zero: this is a normal sg entry. Next sg entry is located at sg + 1. - Bit 0 set: this is a chain entry, the next real entry is at ->page_link with the two low bits masked off. - Bit 1 set: this is the final entry in the sg entry. sg_next() will return NULL when passed such an entry. It's thus important that sg table users use the proper accessors to get and set the page member. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-22intel-iommu: fix for IOMMU early crashKeshavamurthy, Anil S1-0/+3
pci_dev's->sysdata is highly overloaded and currently IOMMU is broken due to IOMMU code depending on this field. This patch introduces new field in pci_dev's dev.archdata struct to hold IOMMU specific per device IOMMU private data. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Greg KH <greg@kroah.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22Intel IOMMU: clflush_cache_range now takes size paramKeshavamurthy, Anil S1-0/+1
Introduce the size param for clflush_cache_range(). Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ashok Raj <ashok.raj@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Christoph Lameter <clameter@sgi.com> Cc: Greg KH <greg@kroah.com> 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>
2007-10-22update boot spec to 2.07Rusty Russell1-2/+7
Updates for version 2.07 of the boot protocol. This includes: load_flags.KEEP_SEGMENTS- flag to request/inhibit segment reloads hardware_subarch - what subarchitecture we're booting under hardware_subarch_data - per-architecture data The intention of these changes is to make booting a paravirtualized kernel work via the normal Linux boot protocol. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: H. Peter Anvin <hpa@zytor.com> 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>
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