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2009-12-03KVM: SVM: reorganize svm_interrupt_allowedJoerg Roedel
This patch reorganizes the logic in svm_interrupt_allowed to make it better to read. This is important because the logic is a lot more complicated with Nested SVM. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-12-03KVM: remove duplicated #includeHuang Weiyi
Remove duplicated #include('s) in arch/x86/kvm/lapic.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-12-03KVM: Activate Virtualization On DemandAlexander Graf
X86 CPUs need to have some magic happening to enable the virtualization extensions on them. This magic can result in unpleasant results for users, like blocking other VMMs from working (vmx) or using invalid TLB entries (svm). Currently KVM activates virtualization when the respective kernel module is loaded. This blocks us from autoloading KVM modules without breaking other VMMs. To circumvent this problem at least a bit, this patch introduces on demand activation of virtualization. This means, that instead virtualization is enabled on creation of the first virtual machine and disabled on destruction of the last one. So using this, KVM can be easily autoloaded, while keeping other hypervisors usable. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: SVM: remove needless mmap_sem acquision from nested_svm_mapMarcelo Tosatti
nested_svm_map unnecessarily takes mmap_sem around gfn_to_page, since gfn_to_page / get_user_pages are responsible for it. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: VMX: Enhance invalid guest state emulationMohammed Gamal
- Change returned handle_invalid_guest_state() to return relevant exit codes - Move triggering the emulation from vmx_vcpu_run() to vmx_handle_exit() - Return to userspace instead of repeatedly trying to emulate instructions that have already failed Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-12-03KVM: x86 emulator: Add pusha and popa instructionsMohammed Gamal
This adds pusha and popa instructions (opcodes 0x60-0x61), this enables booting MINIX with invalid guest state emulation on. [marcelo: remove unused variable] Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: x86 emulator: Add missing decoder flags for 'or' instructionsMohammed Gamal
Add missing decoder flags for or instructions (0xc-0xd). Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Move assigned device code to own fileAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Return -ENOTTY on unrecognized ioctlsAvi Kivity
Not the incorrect -EINVAL. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Drop kvm->irq_lock lock from irq injection pathGleb Natapov
The only thing it protects now is interrupt injection into lapic and this can work lockless. Even now with kvm->irq_lock in place access to lapic is not entirely serialized since vcpu access doesn't take kvm->irq_lock. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Move IO APIC to its own lockGleb Natapov
The allows removal of irq_lock from the injection path. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Move irq ack notifier list to arch independent codeGleb Natapov
Mask irq notifier list is already there. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Maintain back mapping from irqchip/pin to gsiGleb Natapov
Maintain back mapping from irqchip/pin to gsi to speedup interrupt acknowledgment notifications. [avi: build fix on non-x86/ia64] Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Move irq sharing information to irqchip levelGleb Natapov
This removes assumptions that max GSIs is smaller than number of pins. Sharing is tracked on pin level not GSI level. [avi: no PIC on ia64] Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Call pic_clear_isr() on pic reset to reuse logic thereGleb Natapov
Also move call of ack notifiers after pic state change. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: Don't pass kvm_run argumentsAvi Kivity
They're just copies of vcpu->run, which is readily accessible. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: x86 emulator: Introduce No64 decode optionMohammed Gamal
Introduces a new decode option "No64", which is used for instructions that are invalid in long mode. Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03KVM: x86 emulator: Add 'push/pop sreg' instructionsMohammed Gamal
[avi: avoid buffer overflow] Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03Merge remote branch 'tip/x86/entry' into kvm-updates/2.6.33Avi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-02sparc,leon: init_leon srmmu cleanupKristoffer Glembo
Removed unused assignment and capitalized srmmu name for sparc_leon Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-02sparc32: Remove early interrupt enable.Kristoffer Glembo
Enabling interrupts at this points causes the warning "start_kernel(): bug: interrupts were enabled early" to be printed in start_kernel(). Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-02sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structureKristoffer Glembo
Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-02x86, mce: don't restart timer if disabledHidetoshi Seto
Even it is in error path unlikely taken, add_timer_on() at CPU_DOWN_FAILED* needs to be skipped if mce_timer is disabled. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Huang Ying <ying.huang@intel.com> Cc: Jan Beulich <jbeulich@novell.com> Cc: <stable@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-12-02arm: omap: Add omap3_defconfigOlof Johansson
Having one combined defconfig that is the superset of the individual defconfigs for OMAP3 platforms is useful for easily finding build errors. Not to mention convenient as a base if you want to boot several platforms with a single kernel image. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-02MIPS: RB532: Fix devices.c compilation.Florian Fainelli
We should now use dev_set_drvdata to set the driver driver_data field. Signed-off-by: Florian Fainelli <florian@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/747/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-02MIPS: Fix MIPS I build.Ralf Baechle
Broken by d63c63e889bbeeaa461a8addf1245f89f3ce4ece (lmo) rsp. f1e39a4a616cd9981a9decfd5332fd07a01abb8b (kernel.org). Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/746/
2009-12-02i.MX27 audmux: Fix register offsetsSascha Hauer
We have two holes in the register space. The driver did not handle this. Fix it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-12-02mx27: mxt_td60: Add support to SD/MMCAlan Carvalho de Assis
This patch configures iomux and i2c io expander in order to add support to SD/MMC cards on i-MXT TD60. Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-12-02x86/alternatives: No need for alternatives-asm.h to re-invent stuff already ↵Jan Beulich
in asm.h This at once also gets the alignment specification right for x86-64. Signed-off-by: Jan Beulich <jbeulich@novell.com> LKML-Reference: <4B0FF8F80200007800022708@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02x86/alternatives: Check replacementlen <= instrlen at build timeJan Beulich
Having run into the run-(boot-)time check a couple of times lately, I finally took time to find a build-time check so that one doesn't need to analyze the register/stack dump and resolve this (through manual lookup in vmlinux) to the offending construct. The assembler will emit a message like "Error: value of <num> too large for field of 1 bytes at <offset>", which while not pointing out the source location still makes analysis quite a bit easier. Signed-off-by: Jan Beulich <jbeulich@novell.com> LKML-Reference: <4B0FF8AA0200007800022703@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02ARM: 5843/1: OMAP3: add AMBA devices for ETM and ETBAlexander Shishkin
This enables on-chip tracing components found in omap3xxx. Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-02ARM: 5841/1: a driver for on-chip ETM and ETBAlexander Shishkin
This driver implements support for on-chip Embedded Tracing Macrocell and Embedded Trace Buffer. It allows to trigger tracing of kernel execution flow and exporting trace output to userspace via character device and a sysrq combo. Trace output can then be decoded by a fairly simple open source tool [1] which is already sufficient to get the idea of what the kernel is doing. [1]: http://github.com/virtuoso/etm2human Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-02x86: Fix comments of register/stack access functionsMasami Hiramatsu
Fix typos and some redundant comments of register/stack access functions in asm/ptrace.h. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Wenji Huang <wenji.huang@oracle.com> Cc: Mahesh J Salgaonkar <mahesh@linux.vnet.ibm.com> LKML-Reference: <20091201000222.7669.7477.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu> Suggested-by: Wenji Huang <wenji.huang@oracle.com>
2009-12-02x86: Remove unnecessary mdelay() from cpu_disable_common()Suresh Siddha
fixup_irqs() already has a mdelay(). Remove the extra and unnecessary mdelay() from cpu_disable_common(). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: ebiederm@xmission.com Cc: garyhade@us.ibm.com LKML-Reference: <20091201233335.232177348@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02x86, ioapic: Document another case when level irq is seen as an edgeSuresh Siddha
In the case when cpu goes offline, fixup_irqs() will forward any unhandled interrupt on the offlined cpu to the new cpu destination that is handling the corresponding interrupt. This interrupt forwarding is done via IPI's. Hence, in this case also level-triggered io-apic interrupt will be seen as an edge interrupt in the cpu's APIC IRR. Document this scenario in the code which handles this case by doing an explicit EOI to the io-apic to clear remote IRR of the io-apic RTE. Requested-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: ebiederm@xmission.com Cc: garyhade@us.ibm.com LKML-Reference: <20091201233335.143970505@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02x86, ioapic: Fix the EOI register detection mechanismSuresh Siddha
Maciej W. Rozycki reported: > 82093AA I/O APIC has its version set to 0x11 and it > does not support the EOI register. Similarly I/O APICs > integrated into the 82379AB south bridge and the 82374EB/SB > EISA component. IO-APIC versions below 0x20 don't support EOI register. Some of the Intel ICH Specs (ICH2 to ICH5) documents the io-apic version as 0x2. This is an error with documentation and these ICH chips use io-apic's of version 0x20 and indeed has a working EOI register for the io-apic. Fix the EOI register detection mechanism to check for version 0x20 and beyond. And also, a platform can potentially have io-apic's with different versions. Make the EOI register check per io-apic. Reported-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: ebiederm@xmission.com Cc: garyhade@us.ibm.com LKML-Reference: <20091201233335.065361533@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02x86, io-apic: Move the effort of clearing remoteIRR explicitly before ↵Maciej W. Rozycki
migrating the irq When the level-triggered interrupt is seen as an edge interrupt, we try to clear the remoteIRR explicitly (using either an io-apic eoi register when present or through the idea of changing trigger mode of the io-apic RTE to edge and then back to level). But this explicit try also needs to happen before we try to migrate the irq. Otherwise irq migration attempt will fail anyhow, as it postpones the irq migration to a later attempt when it sees the remoteIRR in the io-apic RTE still set. Signed-off-by: "Maciej W. Rozycki" <macro@linux-mips.org> Reviewed-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: ebiederm@xmission.com Cc: garyhade@us.ibm.com LKML-Reference: <20091201233334.975416130@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-02hw-breakpoints: Keep track of user disabled breakpointsFrederic Weisbecker
When we disable a breakpoint through dr7, we unregister it right away, making us lose track of its corresponding address register value. It means that the following sequence would be unsupported: - set address in dr0 - enable it through dr7 - disable it through dr7 - enable it through dr7 because we lost the address register value when we disabled the breakpoint. Don't unregister the disabled breakpoints but rather disable them. Reported-by: "K.Prasad" <prasad@linux.vnet.ibm.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1259735536-9236-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-01Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/mac80211/ht.c
2009-12-01MIPS: Wire up recvmmsg syscallArnaldo Carvalho de Melo
Reported-by: Jean-Mickael Guerin <jean-mickael.guerin@6wind.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-01ARM: 5844/1: rename w90p910_defconfig to n uc910_defconfigwanzongshun
rename w90p910_defconfig Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01ARM: 5842/1: add spi resource support for nuc900wanzongshun
add spi resource support Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01ARM: 5839/1: add nuc960_defconfigwanzongshun
add nuc960_defconfig Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01ARM: 5838/1: add nuc950_defconfigwanzongshun
add nuc950_defconfig Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-02Revert "powerpc/mm: Fix bug in pagetable cache cleanup with ↵Benjamin Herrenschmidt
CONFIG_PPC_SUBPAGE_PROT" This reverts commit c045256d146800ea1d741a8e9e377dada6b7e195. It breaks build when CONFIG_PPC_SUBPAGE_PROT is not set. I will commit a fixed version separately Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-01Merge branch 'for-rmk' of git://git.marvell.com/orion into devel-stableRussell King
2009-12-01ARM: ZERO_PAGE: Avoid flush_dcache_page() for zero pageRussell King
The zero page is read-only, and has its cache state cleared during boot. No further maintanence for this page is required. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01ARM: Avoid evaluating page_address() multiple timesRussell King
page_address() is a function call rather than a macro, and so: if (page_address(page)) do_something(page_address(page)); results in two calls to this function. This is unnecessary; remove the duplication. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01ARM: Avoid duplicated implementation for VIVT cache flushingRussell King
We had two copies of the wrapper code for VIVT cache flushing - one in asm/cacheflush.h and one in arch/arm/mm/flush.c. Reduce this down to one common copy. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-01Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Loongson: Switch from flatmem to sparsemem MIPS: Loongson: Disallow 4kB pages MIPS: Add missing definition for MADV_HWPOISON. MIPS: Fix build error if __xchg() is not getting inlined. MIPS: IP22/IP28 Disable early printk to fix boot problems on some systems.
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