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2010-05-22Merge branch 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds25-2050/+2987
* 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (269 commits) KVM: x86: Add missing locking to arch specific vcpu ioctls KVM: PPC: Add missing vcpu_load()/vcpu_put() in vcpu ioctls KVM: MMU: Segregate shadow pages with different cr0.wp KVM: x86: Check LMA bit before set_efer KVM: Don't allow lmsw to clear cr0.pe KVM: Add cpuid.txt file KVM: x86: Tell the guest we'll warn it about tsc stability x86, paravirt: don't compute pvclock adjustments if we trust the tsc x86: KVM guest: Try using new kvm clock msrs KVM: x86: export paravirtual cpuid flags in KVM_GET_SUPPORTED_CPUID KVM: x86: add new KVMCLOCK cpuid feature KVM: x86: change msr numbers for kvmclock x86, paravirt: Add a global synchronization point for pvclock x86, paravirt: Enable pvclock flags in vcpu_time_info structure KVM: x86: Inject #GP with the right rip on efer writes KVM: SVM: Don't allow nested guest to VMMCALL into host KVM: x86: Fix exception reinjection forced to true KVM: Fix wallclock version writing race KVM: MMU: Don't read pdptrs with mmu spinlock held in mmu_alloc_roots KVM: VMX: enable VMXON check with SMX enabled (Intel TXT) ...
2010-05-22Merge branch 'for_linus' of ↵Linus Torvalds1-0/+55
git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (32 commits) Move N014, N051 and CR620 dmi information to load scm dmi table drivers/platform/x86/eeepc-wmi.c: fix build warning X86 platfrom wmi: Add debug facility to dump WMI data in a readable way X86 platform wmi: Also log GUID string when an event happens and debug is set X86 platform wmi: Introduce debug param to log all WMI events Clean up all objects used by scm model when driver initial fail or exit msi-laptop: fix up some coding style issues found by checkpatch msi-laptop: Add i8042 filter to sync sw state with BIOS when function key pressed msi-laptop: Set rfkill init state when msi-laptop intiial msi-laptop: Add MSI CR620 notebook dmi information to scm models table msi-laptop: Add N014 N051 dmi information to scm models table drivers/platform/x86: Use kmemdup drivers/platform/x86: Use kzalloc drivers/platform/x86: Clarify the MRST IPC driver description slightly eeepc-wmi: depends on BACKLIGHT_CLASS_DEVICE IPC driver for Intel Mobile Internet Device (MID) platforms classmate-laptop: Add RFKILL support. thinkpad-acpi: document backlight level writeback at driver init thinkpad-acpi: clean up ACPI handles handling thinkpad-acpi: don't depend on led_path for led firmware type (v2) ...
2010-05-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds3-10/+331
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (46 commits) random: simplify fips mode crypto: authenc - Fix cryptlen calculation crypto: talitos - add support for sha224 crypto: talitos - add hash algorithms crypto: talitos - second prepare step for adding ahash algorithms crypto: talitos - prepare for adding ahash algorithms crypto: n2 - Add Niagara2 crypto driver crypto: skcipher - Add ablkcipher_walk interfaces crypto: testmgr - Add testing for async hashing and update/final crypto: tcrypt - Add speed tests for async hashing crypto: scatterwalk - Fix scatterwalk_done() test crypto: hifn_795x - Rename ablkcipher_walk to hifn_cipher_walk padata: Use get_online_cpus/put_online_cpus in padata_free padata: Add some code comments padata: Flush the padata queues actively padata: Use a timer to handle remaining objects in the reorder queues crypto: shash - Remove usage of CRYPTO_MINALIGN crypto: mv_cesa - Use resource_size crypto: omap - OMAP macros corrected padata: Use get_online_cpus/put_online_cpus ... Fix up conflicts in arch/arm/mach-omap2/devices.c
2010-05-21Merge branch 'drm-for-2.6.35' of ↵Linus Torvalds2-8/+47
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (207 commits) drm/radeon/kms/pm/r600: select the mid clock mode for single head low profile drm/radeon: fix power supply kconfig interaction. drm/radeon/kms: record object that have been list reserved drm/radeon: AGP memory is only I/O if the aperture can be mapped by the CPU. drm/radeon/kms: don't default display priority to high on rs4xx drm/edid: fix typo in 1600x1200@75 mode drm/nouveau: fix i2c-related init table handlers drm/nouveau: support init table i2c device identifier 0x81 drm/nouveau: ensure we've parsed i2c table entry for INIT_*I2C* handlers drm/nouveau: display error message for any failed init table opcode drm/nouveau: fix init table handlers to return proper error codes drm/nv50: support fractional feedback divider on newer chips drm/nv50: fix monitor detection on certain chipsets drm/nv50: store full dcb i2c entry from vbios drm/nv50: fix suspend/resume with DP outputs drm/nv50: output calculated crtc pll when debugging on drm/nouveau: dump pll limits entries when debugging is on drm/nouveau: bios parser fixes for eDP boards drm/nouveau: fix a nouveau_bo dereference after it's been destroyed drm/nv40: remove some completed ctxprog TODOs ...
2010-05-21earlyprintk,vga,kdb: Fix \b and \r for earlyprintk=vga with kdbJason Wessel1-0/+8
Allow kdb to work properly with with earlyprintk=vga by interpreting the backspace and carriage return output characters. These interpretation of these characters is used for simple line editing provided in the kdb shell. CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> CC: x86@kernel.org Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21x86,early dr regs,kgdb: Allow kernel debugger early dr register accessJason Wessel1-12/+17
If the kernel debugger was configured, attached and started with kgdbwait, the hardware breakpoint registers should get restored by the kgdb code which is managing the dr registers. CC: x86@kernel.org CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21x86,kgdb: Implement early hardware breakpoint debuggingJason Wessel1-2/+28
It is not possible to use the hw_breakpoint.c API prior to mm_init(), but it is possible to use hardware breakpoints with the kernel debugger. Prior to smp_init() it is possible to simply write to the dr registers of the boot cpu directly. This can be used up until the kgdb_arch_late() is invoked, at which point the standard hw_breakpoint.c API will get used. CC: Frederic Weisbecker <fweisbec@gmail.com> CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21x86, kgdb, init: Add early and late debug statesJason Wessel1-7/+10
The kernel debugger can operate well before mm_init(), but the x86 hardware breakpoint code which uses the perf api requires that the kernel allocators are initialized. This means the kernel debug core needs to provide an optional arch specific call back to allow the initialization functions to run after the kernel has been further initialized. The kdb shell already had a similar restriction with an early initialization and late initialization. The kdb_init() was moved into the debug core's version of the late init which is called dbg_late_init(); CC: kgdb-bugreport@lists.sourceforge.net Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21x86, kgdb: early trap init for early debugJan Kiszka3-4/+13
Allow the x86 arch to have early exception processing for the purpose of debugging via the kgdb. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21x86,kgdb: Add low level debug hookJason Wessel3-1/+30
The only way the debugger can handle a trap in inside rcu_lock, notify_die, or atomic_notifier_call_chain without a triple fault is to have a low level "first opportunity handler" in the int3 exception handler. Generally this will be something the vast majority of folks will not need, but for those who need it, it is added as a kernel .config option called KGDB_LOW_LEVEL_TRAP. CC: Ingo Molnar <mingo@elte.hu> CC: Thomas Gleixner <tglx@linutronix.de> CC: H. Peter Anvin <hpa@zytor.com> CC: x86@kernel.org Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21kgdb: remove post_primary_code referencesJason Wessel1-29/+0
Remove all the references to the kgdb_post_primary_code. This function serves no useful purpose because you can obtain the same information from the "struct kgdb_state *ks" from with in the debugger, if for some reason you want the data. Also remove the unintentional duplicate assignment for ks->ex_vector. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-21kgdb: core changes to support kdbJason Wessel1-0/+5
These are the minimum changes to the kgdb core in order to enable an API to connect a new front end (kdb) to the debug core. This patch introduces the dbg_kdb_mode variable controls where the user level I/O is routed. It will be routed to the gdbstub (kgdb) or to the kdb front end which is a simple shell available over the kgdboc connection. You can switch back and forth between kdb or the gdb stub mode of operation dynamically. From gdb stub mode you can blindly type "$3#33", or from the kdb mode you can enter "kgdb" to switch to the gdb stub. The logic in the debug core depends on kdb to look for the typical gdb connection sequences and return immediately with KGDB_PASS_EVENT if a gdb serial command sequence is detected. That should allow a reasonably seamless transition between kdb -> gdb without leaving the kernel exception state. The two gdb serial queries that kdb is responsible for detecting are the "?" and "qSupported" packets. CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Martin Hicks <mort@sgi.com>
2010-05-20Merge branch 'acpica' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (22 commits) ACPI: fix early DSDT dmi check warnings on ia64 ACPICA: Update version to 20100428. ACPICA: Update/clarify some parameter names associated with acpi_handle ACPICA: Rename acpi_ex_system_do_suspend->acpi_ex_system_do_sleep ACPICA: Prevent possible allocation overrun during object copy ACPICA: Split large file, evgpeblk ACPICA: Add GPE support for dynamically loaded ACPI tables ACPICA: Clarify/rename some root table descriptor fields ACPICA: Update version to 20100331. ACPICA: Minimize the differences between linux GPE code and ACPICA code base ACPI: add boot option acpi=copy_dsdt to fix corrupt DSDT ACPICA: Update DSDT copy/detection. ACPICA: Add subsystem option to force copy of DSDT to local memory ACPICA: Add detection of corrupted/replaced DSDT ACPICA: Add write support for DataTable operation regions ACPICA: Fix for acpi_reallocate_root_table for incorrect root table copy ACPICA: Update comments/headers, no functional change ACPICA: Update version to 20100304 ACPICA: Fix for possible fault in acpi_ex_release_mutex ACPICA: Standardize integer output for ACPICA warnings/errors ...
2010-05-20Merge branch 'for-linus' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
2010-05-20Merge branch 'timers-for-linus-hpet' of ↵Linus Torvalds3-12/+26
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk x86, hpet: Restrict read back to affected ATI chipsets
2010-05-20Merge branch 'timers-for-linus-cleanups' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: avr32: Fix typo in read_persistent_clock() sparc: Convert sparc to use read/update_persistent_clock cris: Convert cris to use read/update_persistent_clock m68k: Convert m68k to use read/update_persistent_clock m32r: Convert m32r to use read/update_peristent_clock blackfin: Convert blackfin to use read/update_persistent_clock ia64: Convert ia64 to use read/update_persistent_clock avr32: Convert avr32 to use read/update_persistent_clock h8300: Convert h8300 to use read/update_persistent_clock frv: Convert frv to use read/update_persistent_clock mn10300: Convert mn10300 to use read/update_persistent_clock alpha: Convert alpha to use read/update_persistent_clock xtensa: Fix unnecessary setting of xtime time: Clean up direct xtime usage in xen
2010-05-19KVM: x86: Add missing locking to arch specific vcpu ioctlsAvi Kivity1-0/+6
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: MMU: Segregate shadow pages with different cr0.wpAvi Kivity2-1/+3
When cr0.wp=0, we may shadow a gpte having u/s=1 and r/w=0 with an spte having u/s=0 and r/w=1. This allows excessive access if the guest sets cr0.wp=1 and accesses through this spte. Fix by making cr0.wp part of the base role; we'll have different sptes for the two cases and the problem disappears. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: Check LMA bit before set_eferSheng Yang1-2/+2
kvm_x86_ops->set_efer() would execute vcpu->arch.efer = efer, so the checking of LMA bit didn't work. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: Don't allow lmsw to clear cr0.peAvi Kivity1-1/+1
The current lmsw implementation allows the guest to clear cr0.pe, contrary to the manual, which breaks EMM386.EXE. Fix by ORing the old cr0.pe with lmsw's operand. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: Tell the guest we'll warn it about tsc stabilityGlauber Costa1-1/+4
This patch puts up the flag that tells the guest that we'll warn it about the tsc being trustworthy or not. By now, we also say it is not. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19x86, paravirt: don't compute pvclock adjustments if we trust the tscGlauber Costa4-0/+13
If the HV told us we can fully trust the TSC, skip any correction Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19x86: KVM guest: Try using new kvm clock msrsGlauber Costa1-21/+32
We now added a new set of clock-related msrs in replacement of the old ones. In theory, we could just try to use them and get a return value indicating they do not exist, due to our use of kvm_write_msr_save. However, kvm clock registration happens very early, and if we ever try to write to a non-existant MSR, we raise a lethal #GP, since our idt handlers are not in place yet. So this patch tests for a cpuid feature exported by the host to decide which set of msrs are supported. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: export paravirtual cpuid flags in KVM_GET_SUPPORTED_CPUIDGlauber Costa1-0/+34
Right now, we were using individual KVM_CAP entities to communicate userspace about which cpuids we support. This is suboptimal, since it generates a delay between the feature arriving in the host, and being available at the guest. A much better mechanism is to list para features in KVM_GET_SUPPORTED_CPUID. This makes userspace automatically aware of what we provide. And if we ever add a new cpuid bit in the future, we have to do that again, which create some complexity and delay in feature adoption. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: add new KVMCLOCK cpuid featureGlauber Costa1-0/+4
This cpuid, KVM_CPUID_CLOCKSOURCE2, will indicate to the guest that kvmclock is available through a new set of MSRs. The old ones are deprecated. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: change msr numbers for kvmclockGlauber Costa2-1/+10
Avi pointed out a while ago that those MSRs falls into the pentium PMU range. So the idea here is to add new ones, and after a while, deprecate the old ones. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19x86, paravirt: Add a global synchronization point for pvclockGlauber Costa1-0/+24
In recent stress tests, it was found that pvclock-based systems could seriously warp in smp systems. Using ingo's time-warp-test.c, I could trigger a scenario as bad as 1.5mi warps a minute in some systems. (to be fair, it wasn't that bad in most of them). Investigating further, I found out that such warps were caused by the very offset-based calculation pvclock is based on. This happens even on some machines that report constant_tsc in its tsc flags, specially on multi-socket ones. Two reads of the same kernel timestamp at approx the same time, will likely have tsc timestamped in different occasions too. This means the delta we calculate is unpredictable at best, and can probably be smaller in a cpu that is legitimately reading clock in a forward ocasion. Some adjustments on the host could make this window less likely to happen, but still, it pretty much poses as an intrinsic problem of the mechanism. A while ago, I though about using a shared variable anyway, to hold clock last state, but gave up due to the high contention locking was likely to introduce, possibly rendering the thing useless on big machines. I argue, however, that locking is not necessary. We do a read-and-return sequence in pvclock, and between read and return, the global value can have changed. However, it can only have changed by means of an addition of a positive value. So if we detected that our clock timestamp is less than the current global, we know that we need to return a higher one, even though it is not exactly the one we compared to. OTOH, if we detect we're greater than the current time source, we atomically replace the value with our new readings. This do causes contention on big boxes (but big here means *BIG*), but it seems like a good trade off, since it provide us with a time source guaranteed to be stable wrt time warps. After this patch is applied, I don't see a single warp in time during 5 days of execution, in any of the machines I saw them before. Signed-off-by: Glauber Costa <glommer@redhat.com> Acked-by: Zachary Amsden <zamsden@redhat.com> CC: Jeremy Fitzhardinge <jeremy@goop.org> CC: Avi Kivity <avi@redhat.com> CC: Marcelo Tosatti <mtosatti@redhat.com> CC: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19x86, paravirt: Enable pvclock flags in vcpu_time_info structureGlauber Costa3-1/+12
This patch removes one padding byte and transform it into a flags field. New versions of guests using pvclock will query these flags upon each read. Flags, however, will only be interpreted when the guest decides to. It uses the pvclock_valid_flags function to signal that a specific set of flags should be taken into consideration. Which flags are valid are usually devised via HV negotiation. Signed-off-by: Glauber Costa <glommer@redhat.com> CC: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: x86: Inject #GP with the right rip on efer writesRoedel, Joerg1-19/+12
This patch fixes a bug in the KVM efer-msr write path. If a guest writes to a reserved efer bit the set_efer function injects the #GP directly. The architecture dependent wrmsr function does not see this, assumes success and advances the rip. This results in a #GP in the guest with the wrong rip. This patch fixes this by reporting efer write errors back to the architectural wrmsr function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: SVM: Don't allow nested guest to VMMCALL into hostJoerg Roedel1-0/+3
This patch disables the possibility for a l2-guest to do a VMMCALL directly into the host. This would happen if the l1-hypervisor doesn't intercept VMMCALL and the l2-guest executes this instruction. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: x86: Fix exception reinjection forced to trueJoerg Roedel1-1/+1
The patch merged recently which allowed to mark an exception as reinjected has a bug as it always marks the exception as reinjected. This breaks nested-svm shadow-on-shadow implementation. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: Fix wallclock version writing raceAvi Kivity1-2/+10
Wallclock writing uses an unprotected global variable to hold the version; this can cause one guest to interfere with another if both write their wallclock at the same time. Acked-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: MMU: Don't read pdptrs with mmu spinlock held in mmu_alloc_rootsAvi Kivity1-0/+7
On svm, kvm_read_pdptr() may require reading guest memory, which can sleep. Push the spinlock into mmu_alloc_roots(), and only take it after we've read the pdptr. Tested-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: VMX: enable VMXON check with SMX enabled (Intel TXT)Shane Wang3-13/+25
Per document, for feature control MSR: Bit 1 enables VMXON in SMX operation. If the bit is clear, execution of VMXON in SMX operation causes a general-protection exception. Bit 2 enables VMXON outside SMX operation. If the bit is clear, execution of VMXON outside SMX operation causes a general-protection exception. This patch is to enable this kind of check with SMX for VMXON in KVM. Signed-off-by: Shane Wang <shane.wang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: x86: properly update ready_for_interrupt_injectionMarcelo Tosatti1-1/+1
The recent changes to emulate string instructions without entering guest mode exposed a bug where pending interrupts are not properly reflected in ready_for_interrupt_injection. The result is that userspace overwrites a previously queued interrupt, when irqchip's are emulated in userspace. Fix by always updating state before returning to userspace. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: VMX: Atomically switch efer if EPT && !EFER.NXAvi Kivity1-0/+12
When EPT is enabled, we cannot emulate EFER.NX=0 through the shadow page tables. This causes accesses through ptes with bit 63 set to succeed instead of failing a reserved bit check. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: VMX: Add facility to atomically switch MSRs on guest entry/exitAvi Kivity1-0/+49
Some guest msr values cannot be used on the host (for example. EFER.NX=0), so we need to switch them atomically during guest entry or exit. Add a facility to program the vmx msr autoload registers accordingly. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: VMX: Add definitions for guest and host EFER autoswitch vmcs entriesAvi Kivity1-0/+4
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: VMX: Add definition for msr autoload entryAvi Kivity1-1/+7
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: Let vcpu structure alignment be determined at runtimeAvi Kivity2-2/+3
vmx and svm vcpus have different contents and therefore may have different alignmment requirements. Let each specify its required alignment. Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-19KVM: MMU: cleanup invlpg codeXiao Guangrong1-3/+1
Using is_last_spte() to cleanup invlpg code Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: MMU: move unsync/sync tracpoints to proper placeXiao Guangrong1-2/+2
Move unsync/sync tracepoints to the proper place, it's good for us to obtain unsync page live time Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: MMU: convert mmu tracepointsXiao Guangrong1-43/+26
Convert mmu tracepoints by using DECLARE_EVENT_CLASS Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: MMU: fix for calculating gpa in invlpg codeXiao Guangrong1-1/+6
If the guest is 32-bit, we should use 'quadrant' to adjust gpa offset Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: Fix mmu shrinker errorGui Jianfeng1-5/+5
kvm_mmu_remove_one_alloc_mmu_page() assumes kvm_mmu_zap_page() only reclaims only one sp, but that's not the case. This will cause mmu shrinker returns a wrong number. This patch fix the counting error. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-19KVM: MMU: fix hashing for TDP and non-paging modesEric Northup1-4/+8
For TDP mode, avoid creating multiple page table roots for the single guest-to-host physical address map by fixing the inputs used for the shadow page table hash in mmu_alloc_roots(). Signed-off-by: Eric Northup <digitaleric@google.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-05-18Merge branch 'x86-uv-for-linus' of ↵Linus Torvalds6-905/+1167
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, UV: uv_irq.c: Fix all sparse warnings x86, UV: Improve BAU performance and error recovery x86, UV: Delete unneeded boot messages x86, UV: Clean up UV headers for MMR definitions
2010-05-18Merge branch 'x86-txt-for-linus' of ↵Linus Torvalds2-10/+17
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-txt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, tboot: Add support for S3 memory integrity protection
2010-05-18Merge branch 'x86-pat-for-linus' of ↵Linus Torvalds5-239/+364
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, pat: Update the page flags for memtype atomically instead of using memtype_lock x86, pat: In rbt_memtype_check_insert(), update new->type only if valid x86, pat: Migrate to rbtree only backend for pat memtype management x86, pat: Preparatory changes in pat.c for bigger rbtree change rbtree: Add support for augmented rbtrees
2010-05-18Merge branch 'x86-mrst-for-linus' of ↵Linus Torvalds3-2/+7
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: x86, mrst: add nop functions to x86_init mpparse functions x86, mrst, pci: return 0 for non-present pci bars x86: Avoid check hlt for newer cpus