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2010-05-14x86, k8: Fix build error when K8_NB is disabledBorislav Petkov
K8_NB depends on PCI and when the last is disabled (allnoconfig) we fail at the final linking stage due to missing exported num_k8_northbridges. Add a header stub for that. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <20100503183036.GJ26107@aftab> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
2010-04-30x86: Fix 'reservetop=' functionalityLiang Li
When specifying the 'reservetop=0xbadc0de' kernel parameter, the kernel will stop booting due to a early_ioremap bug that relates to commit 8827247ff. The root cause of boot failure problem is the value of 'slot_virt[i]' was initialized in setup_arch->early_ioremap_init(). But later in setup_arch, the function 'parse_early_param' will modify 'FIXADDR_TOP' when 'reservetop=0xbadc0de' being specified. The simplest fix might be use __fix_to_virt(idx0) to get updated value of 'FIXADDR_TOP' in '__early_ioremap' instead of reference old value from slot_virt[slot] directly. Changelog since v0: -v1: When reservetop being handled then FIXADDR_TOP get adjusted, Hence check prev_map then re-initialize slot_virt and PMD based on new FIXADDR_TOP. -v2: place fixup_early_ioremap hence call early_ioremap_init in reserve_top_address to re-initialize slot_virt and corresponding PMD when parse_reservertop -v3: move fixup_early_ioremap out of reserve_top_address to make sure other clients of reserve_top_address like xen/lguest won't broken Signed-off-by: Liang Li <liang.li@windriver.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Wang Chen <wangchen@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1272621711-8683-1-git-send-email-liang.li@windriver.com> [ fixed three small cleanliness details in fixup_early_ioremap() ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-04-15Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/gart: Disable GART explicitly before initialization dma-debug: Cleanup for copy-loop in filter_write() x86/amd-iommu: Remove obsolete parameter documentation x86/amd-iommu: use for_each_pci_dev Revert "x86: disable IOMMUs on kernel crash" x86/amd-iommu: warn when issuing command to uninitialized cmd buffer x86/amd-iommu: enable iommu before attaching devices x86/amd-iommu: Use helper function to destroy domain x86/amd-iommu: Report errors in acpi parsing functions upstream x86/amd-iommu: Pt mode fix for domain_destroy x86/amd-iommu: Protect IOMMU-API map/unmap path x86/amd-iommu: Remove double NULL check in check_device
2010-04-14lguest: stop using KVM hypercall mechanismRusty Russell
This is a partial revert of 4cd8b5e2a159 "lguest: use KVM hypercalls"; we revert to using (just as questionable but more reliable) int $15 for hypercalls. I didn't revert the register mapping, so we still use the same calling convention as kvm. KVM in more recent incarnations stopped injecting a fault when a guest tried to use the VMCALL instruction from ring 1, so lguest under kvm fails to make hypercalls. It was nice to share code with our KVM cousins, but this was overreach. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui@gmail.com> Cc: Avi Kivity <avi@redhat.com>
2010-04-13Merge branch 'iommu/fixes' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2010-04-07Merge branch 'amd-iommu/fixes' into iommu/fixesJoerg Roedel
2010-04-07x86/amd-iommu: warn when issuing command to uninitialized cmd bufferChris Wright
To catch future potential issues we can add a warning whenever we issue a command before the command buffer is fully initialized. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-03-30x86: don't include slab.h from arch/x86/include/asm/pgtable_32.hTejun Heo
Including slab.h from x86 pgtable_32.h creates a troublesome dependency chain w/ ftrace enabled. The following chain leads to inclusion of pgtable_32.h from define_trace.h. trace/define_trace.h trace/ftrace.h linux/ftrace_event.h linux/ring_buffer.h linux/mm.h asm/pgtable.h asm/pgtable_32.h slab.h itself defines trace hooks via linux/sl[aou]b_def.h linux/kmemtrace.h trace/events/kmem.h If slab.h is not included before define_trace.h is included, this leads to duplicate definitions of kmemtrace hooks or other include dependency problems. pgtable_32.h doesn't need slab.h to begin with. Don't include it from there. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com>
2010-03-19x86, amd: Restrict usage of c1e_idle()Andreas Herrmann
Currently c1e_idle returns true for all CPUs greater than or equal to family 0xf model 0x40. This covers too many CPUs. Meanwhile a respective erratum for the underlying problem was filed (#400). This patch adds the logic to check whether erratum #400 applies to a given CPU. Especially for CPUs where SMI/HW triggered C1e is not supported, c1e_idle() doesn't need to be used. We can check this by looking at the respective OSVW bit for erratum #400. Cc: <stable@kernel.org> # .32.x .33.x Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> LKML-Reference: <20100319110922.GA19614@alberich.amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-03-16x86: Fix placement of FIX_OHCI1394_BASEJan Beulich
Ever for 32-bit with sufficiently high NR_CPUS, and starting with commit 789d03f584484af85dbdc64935270c8e45f36ef7 also for 64-bit, the statically allocated early fixmap page tables were not covering FIX_OHCI1394_BASE, leading to a boot time crash when "ohci1394_dma=early" was used. Despite this entry not being a permanently used one, it needs to be moved into the permanent range since it has to be close to FIX_DBGP_BASE and FIX_EARLYCON_MEM_BASE. Reported-bisected-and-tested-by: Justin P. Mattock <justinmattock@gmail.com> Fixes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=14487 Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: <stable@kernel.org> # [as far back as long as it still applies] LKML-Reference: <4B9E15D30200007800034D23@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-16x86: Handle legacy PIC interrupts on all the cpu'sSuresh Siddha
Ingo Molnar reported that with the recent changes of not statically blocking IRQ0_VECTOR..IRQ15_VECTOR's on all the cpu's, broke an AMD platform (with Nvidia chipset) boot when "noapic" boot option is used. On this platform, legacy PIC interrupts are getting delivered to all the cpu's instead of just the boot cpu. Thus not initializing the vector to irq mapping for the legacy irq's resulted in not handling certain interrupts causing boot hang. Fix this by initializing the vector to irq mapping on all the logical cpu's, if the legacy IRQ is handled by the legacy PIC. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> [ -v2: io-apic-enabled improvement ] Acked-by: Yinghai Lu <yinghai@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> LKML-Reference: <1268692386.3296.43.camel@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-13Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Provide generic perf_sample_data initialization MAINTAINERS: Add Arnaldo as tools/perf/ co-maintainer perf trace: Don't use pager if scripting perf trace/scripting: Remove extraneous header read perf, ARM: Modify kuser rmb() call to compile for Thumb-2 x86/stacktrace: Don't dereference bad frame pointers perf archive: Don't try to collect files without a build-id perf_events, x86: Fixup fixed counter constraints perf, x86: Restrict the ANY flag perf, x86: rename macro in ARCH_PERFMON_EVENTSEL_ENABLE perf, x86: add some IBS macros to perf_event.h perf, x86: make IBS macros available in perf_event.h hw-breakpoints: Remove stub unthrottle callback x86/hw-breakpoints: Remove the name field perf: Remove pointless breakpoint union perf lock: Drop the buffers multiplexing dependency perf lock: Fix and add misc documentally things percpu: Add __percpu sparse annotations to hw_breakpoint
2010-03-12pci-dma: add linux/pci-dma.h to linux/pci.hFUJITA Tomonori
All the architectures properly set NEED_DMA_MAP_STATE now so we can safely add linux/pci-dma.h to linux/pci.h and remove the linux/pci-dma.h inclusion in arch's asm/pci.h Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12pci-dma: x86: use include/linux/pci-dma.hFUJITA Tomonori
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12ptrace: move user_enable_single_step & co prototypes to linux/ptrace.hChristoph Hellwig
While in theory user_enable_single_step/user_disable_single_step/ user_enable_blockstep could also be provided as an inline or macro there's no good reason to do so, and having the prototype in one places keeps code size and confusion down. Roland said: The original thought there was that user_enable_single_step() et al might well be only an instruction or three on a sane machine (as if we have any of those!), and since there is only one call site inlining would be beneficial. But I agree that there is no strong reason to care about inlining it. As to the arch changes, there is only one thought I'd add to the record. It was always my thinking that for an arch where PTRACE_SINGLESTEP does text-modifying breakpoint insertion, user_enable_single_step() should not be provided. That is, arch_has_single_step()=>true means that there is an arch facility with "pure" semantics that does not have any unexpected side effects. Inserting a breakpoint might do very unexpected strange things in multi-threaded situations. Aside from that, it is a peculiar side effect that user_{enable,disable}_single_step() should cause COW de-sharing of text pages and so forth. For PTRACE_SINGLESTEP, all these peculiarities are the status quo ante for that arch, so having arch_ptrace() itself do those is one thing. But for building other things in the future, it is nicer to have a uniform "pure" semantics that arch-independent code can expect. OTOH, all such arch issues are really up to the arch maintainer. As of today, there is nothing but ptrace using user_enable_single_step() et al so it's a distinction without a practical difference. If/when there are other facilities that use user_enable_single_step() and might care, the affected arch's can revisit the question when someone cares about the quality of the arch support for said new facility. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12Add generic sys_olduname()Christoph Hellwig
Add generic implementations of the old and really old uname system calls. Note that sh only implements sys_olduname but not sys_oldolduname, but I'm not going to bother with another ifdef for that special case. m32r implemented an old uname but never wired it up, so kill it, too. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12improve sys_newuname() for compat architecturesChristoph Hellwig
On an architecture that supports 32-bit compat we need to override the reported machine in uname with the 32-bit value. Instead of doing this separately in every architecture introduce a COMPAT_UTS_MACHINE define in <asm/compat.h> and apply it directly in sys_newuname(). Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12Add generic sys_ipc wrapperChristoph Hellwig
Add a generic implementation of the ipc demultiplexer syscall. Except for s390 and sparc64 all implementations of the sys_ipc are nearly identical. There are slight differences in the types of the parameters, where mips and powerpc as the only 64-bit architectures with sys_ipc use unsigned long for the "third" argument as it gets casted to a pointer later, while it traditionally is an "int" like most other paramters. frv goes even further and uses unsigned long for all parameters execept for "ptr" which is a pointer type everywhere. The change from int to unsigned long for "third" and back to "int" for the others on frv should be fine due to the in-register calling conventions for syscalls (we already had a similar issue with the generic sys_ptrace), but I'd prefer to have the arch maintainers looks over this in details. Except for that h8300, m68k and m68knommu lack an impplementation of the semtimedop sub call which this patch adds, and various architectures have gets used - at least on i386 it seems superflous as the compat code on x86-64 and ia64 doesn't even bother to implement it. [akpm@linux-foundation.org: add sys_ipc to sys_ni.c] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12Add generic sys_old_mmap()Christoph Hellwig
Add a generic implementation of the old mmap() syscall, which expects its argument in a memory block and switch all architectures over to use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12Add generic sys_old_select()Christoph Hellwig
Add a generic implementation of the old select() syscall, which expects its argument in a memory block and switch all architectures over to use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Acked-by: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Acked-by: David Howells <dhowells@redhat.com> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-09Merge commit 'v2.6.34-rc1' into perf/urgentIngo Molnar
Conflicts: tools/perf/util/probe-event.c Merge reason: Pick up -rc1 and resolve the conflict as well. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-07Merge branch 'x86-mrst-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-mrst-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) x86, mrst: Fix whitespace breakage in apb_timer.c x86, mrst: Fix APB timer per cpu clockevent x86, mrst: Remove X86_MRST dependency on PCI_IOAPIC x86, olpc: Use pci subarch init for OLPC x86, pci: Add arch_init to x86_init abstraction x86, mrst: Add Kconfig dependencies for Moorestown x86, pci: Exclude Moorestown PCI code if CONFIG_X86_MRST=n x86, numaq: Make CONFIG_X86_NUMAQ depend on CONFIG_PCI x86, pci: Add sanity check for PCI fixed bar probing x86, legacy_irq: Remove duplicate vector assigment x86, legacy_irq: Remove left over nr_legacy_irqs x86, mrst: Platform clock setup code x86, apbt: Moorestown APB system timer driver x86, mrst: Add vrtc platform data setup code x86, mrst: Add platform timer info parsing code x86, mrst: Fill in PCI functions in x86_init layer x86, mrst: Add dummy legacy pic to platform setup x86/PCI: Moorestown PCI support x86, ioapic: Add dummy ioapic functions x86, ioapic: Early enable ioapic for timer irq ... Fixed up semantic conflict of new clocksources due to commit 17622339af25 ("clocksource: add argument to resume callback").
2010-03-05Merge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (145 commits) KVM: x86: Add KVM_CAP_X86_ROBUST_SINGLESTEP KVM: VMX: Update instruction length on intercepted BP KVM: Fix emulate_sys[call, enter, exit]()'s fault handling KVM: Fix segment descriptor loading KVM: Fix load_guest_segment_descriptor() to inject page fault KVM: x86 emulator: Forbid modifying CS segment register by mov instruction KVM: Convert kvm->requests_lock to raw_spinlock_t KVM: Convert i8254/i8259 locks to raw_spinlocks KVM: x86 emulator: disallow opcode 82 in 64-bit mode KVM: x86 emulator: code style cleanup KVM: Plan obsolescence of kernel allocated slots, paravirt mmu KVM: x86 emulator: Add LOCK prefix validity checking KVM: x86 emulator: Check CPL level during privilege instruction emulation KVM: x86 emulator: Fix popf emulation KVM: x86 emulator: Check IOPL level during io instruction emulation KVM: x86 emulator: fix memory access during x86 emulation KVM: x86 emulator: Add Virtual-8086 mode of emulation KVM: x86 emulator: Add group9 instruction decoding KVM: x86 emulator: Add group8 instruction decoding KVM: do not store wqh in irqfd ... Trivial conflicts in Documentation/feature-removal-schedule.txt
2010-03-05Merge branch 'perf-probes-for-linus-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Issue at least one memory barrier in stop_machine_text_poke() perf probe: Correct probe syntax on command line help perf probe: Add lazy line matching support perf probe: Show more lines after last line perf probe: Check function address range strictly in line finder perf probe: Use libdw callback routines perf probe: Use elfutils-libdw for analyzing debuginfo perf probe: Rename probe finder functions perf probe: Fix bugs in line range finder perf probe: Update perf probe document perf probe: Do not show --line option without dwarf support kprobes: Add documents of jump optimization kprobes/x86: Support kprobes jump optimization on x86 x86: Add text_poke_smp for SMP cross modifying code kprobes/x86: Cleanup save/restore registers kprobes/x86: Boost probes when reentering kprobes: Jump optimization sysctl interface kprobes: Introduce kprobes jump optimization kprobes: Introduce generic insn_slot framework kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
2010-03-03Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: resource: Fix broken indentation resource: Fix generic page_is_ram() for partial RAM pages x86, paravirt: Remove kmap_atomic_pte paravirt op. x86, vmi: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y x86, xen: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y
2010-03-03Merge branch 'x86-apic-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits) x86: Fix out of order of gsi x86: apic: Fix mismerge, add arch_probe_nr_irqs() again x86, irq: Keep chip_data in create_irq_nr and destroy_irq xen: Remove unnecessary arch specific xen irq functions. smp: Use nr_cpus= to set nr_cpu_ids early x86, irq: Remove arch_probe_nr_irqs sparseirq: Use radix_tree instead of ptrs array sparseirq: Change irq_desc_ptrs to static init: Move radix_tree_init() early irq: Remove unnecessary bootmem code x86: Add iMac9,1 to pci_reboot_dmi_table x86: Convert i8259_lock to raw_spinlock x86: Convert nmi_lock to raw_spinlock x86: Convert ioapic_lock and vector_lock to raw_spinlock x86: Avoid race condition in pci_enable_msix() x86: Fix SCI on IOAPIC != 0 x86, ia32_aout: do not kill argument mapping x86, irq: Move __setup_vector_irq() before the first irq enable in cpu online path x86, irq: Update the vector domain for legacy irqs handled by io-apic x86, irq: Don't block IRQ0_VECTOR..IRQ15_VECTOR's on all cpu's ...
2010-03-03Merge branch 'x86-bootmem-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) early_res: Need to save the allocation name in drop_range_partial() sparsemem: Fix compilation on PowerPC early_res: Add free_early_partial() x86: Fix non-bootmem compilation on PowerPC core: Move early_res from arch/x86 to kernel/ x86: Add find_fw_memmap_area Move round_up/down to kernel.h x86: Make 32bit support NO_BOOTMEM early_res: Enhance check_and_double_early_res x86: Move back find_e820_area to e820.c x86: Add find_early_area_size x86: Separate early_res related code from e820.c x86: Move bios page reserve early to head32/64.c sparsemem: Put mem map for one node together. sparsemem: Put usemap for one node together x86: Make 64 bit use early_res instead of bootmem before slab x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA x86: Make early_node_mem get mem > 4 GB if possible x86: Dynamically increase early_res array size x86: Introduce max_early_res and early_res_count ...
2010-03-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: add __percpu sparse annotations to what's left percpu: add __percpu sparse annotations to fs percpu: add __percpu sparse annotations to core kernel subsystems local_t: Remove leftover local.h this_cpu: Remove pageset_notifier this_cpu: Page allocator conversion percpu, x86: Generic inc / dec percpu instructions local_t: Move local.h include to ringbuffer.c and ring_buffer_benchmark.c module: Use this_cpu_xx to dynamically allocate counters local_t: Remove cpu_local_xx macros percpu: refactor the code in pcpu_[de]populate_chunk() percpu: remove compile warnings caused by __verify_pcpu_ptr() percpu: make accessors check for percpu pointer in sparse percpu: add __percpu for sparse. percpu: make access macros universal percpu: remove per_cpu__ prefix.
2010-03-02perf_events, x86: Fixup fixed counter constraintsPeter Zijlstra
Patch 1da53e0230 ("perf_events, x86: Improve x86 event scheduling") lost us one of the fixed purpose counters and then ed8777fc13 ("perf_events, x86: Fix event constraint masks") broke it even further. Widen the fixed event mask to event+umask and specify the full config for each of the 3 fixed purpose counters. Then let the init code fill out the placement for the GP regs based on the cpuid info. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-01Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits) ARM: Eliminate decompressor -Dstatic= PIC hack ARM: 5958/1: ARM: U300: fix inverted clk round rate ARM: 5956/1: misplaced parentheses ARM: 5955/1: ep93xx: move timer defines into core.c and document ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c ARM: 5953/1: ep93xx: fix broken build of clock.c ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig ARM: 5949/1: NUC900 add gpio virtual memory map ARM: 5948/1: Enable timer0 to time4 clock support for nuc910 ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk ARM: make_coherent(): fix problems with highpte, part 2 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself ARM: 5945/1: ep93xx: include correct irq.h in core.c ARM: 5933/1: amba-pl011: support hardware flow control ARM: 5930/1: Add PKMAP area description to memory.txt. ARM: 5929/1: Add checks to detect overlap of memory regions. ARM: 5928/1: Change type of VMALLOC_END to unsigned long. ARM: 5927/1: Make delimiters of DMA area globally visibly. ARM: 5926/1: Add "Virtual kernel memory..." printout. ARM: 5920/1: OMAP4: Enable L2 Cache ... Fix up trivial conflict in arch/arm/mach-mx25/clock.c
2010-03-01KVM: Fix segment descriptor loadingGleb Natapov
Add proper error and permission checking. This patch also change task switching code to load segment selectors before segment descriptors, like SDM requires, otherwise permission checking during segment descriptor loading will be incorrect. Cc: stable@kernel.org (2.6.33, 2.6.32) Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: x86 emulator: Check IOPL level during io instruction emulationGleb Natapov
Make emulator check that vcpu is allowed to execute IN, INS, OUT, OUTS, CLI, STI. Signed-off-by: Gleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: x86 emulator: fix memory access during x86 emulationGleb Natapov
Currently when x86 emulator needs to access memory, page walk is done with broadest permission possible, so if emulated instruction was executed by userspace process it can still access kernel memory. Fix that by providing correct memory access to page walker during emulation. Signed-off-by: Gleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: x86 emulator: Add Virtual-8086 mode of emulationGleb Natapov
For some instructions CPU behaves differently for real-mode and virtual 8086. Let emulator know which mode cpu is in, so it will not poke into vcpu state directly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: VMX: Rename VMX_EPT_IGMT_BIT to VMX_EPT_IPAT_BITSheng Yang
Following the new SDM. Now the bit is named "Ignore PAT memory type". Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Rename vcpu->shadow_efer to eferAvi Kivity
None of the other registers have the shadow_ prefix. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: Activate fpu on cltsAvi Kivity
Assume that if the guest executes clts, it knows what it's doing, and load the guest fpu to prevent an #NM exception. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: SVM: Clean up and enhance mov dr emulationJan Kiszka
Enhance mov dr instruction emulation used by SVM so that it properly handles dr4/5: alias to dr6/7 if cr4.de is cleared. Otherwise return EMULATE_FAIL which will let our only possible caller in that scenario, ud_interception, re-inject UD. We do not need to inject faults, SVM does this for us (exceptions take precedence over instruction interceptions). For the same reason, the value overflow checks can be removed. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: export <asm/hyperv.h>Avi Kivity
Needed by <asm/kvm_para.h>. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Add HYPER-V apic access MSRsGleb Natapov
Implement HYPER-V apic MSRs. Spec defines three MSRs that speed-up access to EOI/TPR/ICR apic registers for PV guests. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Implement bare minimum of HYPER-V MSRsGleb Natapov
Minimum HYPER-V implementation should have GUEST_OS_ID, HYPERCALL and VP_INDEX MSRs. [avi: fix build on i386] Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Add HYPER-V header fileGleb Natapov
Provide HYPER-V related defines that will be used by following patches. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: SVM: Fix SVM_CR0_SELECTIVE_MASKAvi Kivity
Instead of selecting TS and MP as the comments say, the macro included TS and PE. Luckily the macro is unused now, but fix in order to save a few hours of debugging from anyone who attempts to use it. Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Lazify fpu activation and deactivationAvi Kivity
Defer fpu deactivation as much as possible - if the guest fpu is loaded, keep it loaded until the next heavyweight exit (where we are forced to unload it). This reduces unnecessary exits. We also defer fpu activation on clts; while clts signals the intent to use the fpu, we can't be sure the guest will actually use it. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: VMX: Allow the guest to own some cr0 bitsAvi Kivity
We will use this later to give the guest ownership of cr0.ts. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01KVM: Fix the explanation of write_emulatedTakuya Yoshikawa
The explanation of write_emulated is confused with that of read_emulated. This patch fix it. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: VMX: Enable EPT 1GB page supportSheng Yang
Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: x86: Rename gb_page_enable() to get_lpage_level() in kvm_x86_opsSheng Yang
Then the callback can provide the maximum supported large page level, which is more flexible. Also move the gb page support into x86_64 specific. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: Bump maximum vcpu count to 64Avi Kivity
With slots_lock converted to rcu, the entire kvm hotpath on modern processors (with npt or ept) now scales beautifully. Increase the maximum vcpu count to 64 to reflect this. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01KVM: x86: switch kvm_set_memory_alias to SRCU updateMarcelo Tosatti
Using a similar two-step procedure as for memslots. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>