- 24 Mar, 2009 40 commits
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Joerg Roedel authored
The following code flow is unnecessary: if (largepage) was_rmapped = is_large_pte(*shadow_pte); else was_rmapped = 1; The is_large_pte() function will always evaluate to one here because the (largepage && !is_large_pte) case is already handled in the first if-clause. So we can remove this check and set was_rmapped to one always here. Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Acked-by:
Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Joerg Roedel authored
The function kvm_is_mmio_pfn is called before put_page is called on a page by KVM. This is a problem when when this function is called on some struct page which is part of a compund page. It does not test the reserved flag of the compound page but of the struct page within the compount page. This is a problem when KVM works with hugepages allocated at boot time. These pages have the reserved bit set in all tail pages. Only the flag in the compount head is cleared. KVM would not put such a page which results in a memory leak. Signed-off-by:
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Gerd Hoffmann authored
kvmclock currently falls apart on machines without constant tsc. This patch fixes it. Changes: * keep tsc frequency in a per-cpu variable. * handle kvmclock update using a new request flag, thus checking whenever we need an update each time we enter guest context. * use a cpufreq notifier to track frequency changes and force kvmclock updates. * send ipis to kick cpu out of guest context if needed to make sure the guest doesn't see stale values. Signed-off-by:Gerd Hoffmann <kraxel@redhat.com> Signed-off-by:
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Sheng Yang authored
Removed duplicated code. Signed-off-by:
Sheng Yang <sheng@linux.intel.com> Signed-off-by:
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Sheng Yang authored
Merge MSI userspace interface with IRQ routing table. Notice the API have been changed, and using IRQ routing table would be the only interface kvm-userspace supported. Signed-off-by:
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Jan Kiszka authored
Looks like neither the direction nor the rep prefix are used anymore. Drop related evaluations from SVM's and VMX's I/O exit handlers. Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
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Alexander Graf authored
AMD K10 CPUs implement the FFXSR feature that gets enabled using EFER. Let's check if the virtual CPU description includes that CPUID feature bit and allow enabling it then. This is required for Windows Server 2008 in Hyper-V mode. v2 adds CPUID capability exposure Signed-off-by:
Alexander Graf <agraf@suse.de> Signed-off-by:
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Alexander Graf authored
AMD k10 includes support for the FFXSR feature, which leaves out XMM registers on FXSAVE/FXSAVE when the EFER_FFXSR bit is set in EFER. The CPUID feature bit exists already, but the EFER bit is missing currently, so this patch adds it to the list of known EFER bits. Signed-off-by:
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Marcelo Tosatti authored
IRQ ack notifications assume an identity mapping between pin->gsi, which might not be the case with, for example, HPET. Translate before acking. Signed-off-by:
Gleb Natapov <gleb@redhat.com>
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Jes Sorensen authored
Account for number of online cpus and use that in loops iterating over the list of vpus instead of scanning the full array unconditionally. This patch is a building block to facilitate allowing to bump up the size of MAX_VCPUS significantly. Signed-off-by:
Jes Sorensen <jes@sgi.com> Acked-by : Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by:
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Christian Borntraeger authored
This patch fixes the SET PREFIX interrupt if triggered by userspace. Until now, it was not necessary, but life migration will need it. In addition, it helped me creating SMP support for my kvm_crashme tool (lets kvm execute random guest memory content). Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
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Christian Borntraeger authored
The kernel handles some priviledged instruction exits. While I was unable to trigger such an exit from guest userspace, the code should check for supervisor state before emulating a priviledged instruction. I also renamed kvm_s390_handle_priv to kvm_s390_handle_b2. After all there are non priviledged b2 instructions like stck (store clock). Signed-off-by:
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Christian Borntraeger authored
KVM on s390 does not support the ESA/390 architecture. We refuse to change the architecture mode and print a warning. This patch removes the printk for several reasons: o A malicious guest can flood host dmesg o The old message had no newline o there is no connection between the message and the failing guest This patch simply removes the printk. We already set the condition code to 3 - the guest knows that something went wrong. Reported-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Xiantao Zhang authored
For windows 2008, it needs more pal calls to implement for booting. In addition, also changes the name of set_{sal, pal}_call_result to get_{sal,pal}_call_result for readability. Signed-off-by:Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by:
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Xiantao Zhang authored
Add the support to translate PAL Call's pointer args. Signed-off-by:
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Xiantao Zhang authored
Simply the logic of hash vTLB, and export kvm_gpa_to_mpa. Signed-off-by:
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Avi Kivity authored
Kconfig symbols are not available in userspace, and are not stripped by headers-install. Avoid their use by adding #defines in <asm/kvm.h> to suit each architecture. Signed-off-by: -
Avi Kivity authored
Currently KVM has a static routing from GSI numbers to interrupts (namely, 0-15 are mapped 1:1 to both PIC and IOAPIC, and 16:23 are mapped 1:1 to the IOAPIC). This is insufficient for several reasons: - HPET requires non 1:1 mapping for the timer interrupt - MSIs need a new method to assign interrupt numbers and dispatch them - ACPI APIC mode needs to be able to reassign the PCI LINK interrupts to the ioapics This patch implements an interrupt routing table (as a linked list, but this can be easily changed) and a userspace interface to replace the table. The routing table is initialized according to the current hardwired mapping. Signed-off-by: -
Amit Shah authored
Some typos, comments, whitespace errors corrected in the cpuid code Signed-off-by:
Amit Shah <amit.shah@redhat.com> Signed-off-by:
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Liu Yu authored
Commit 2a4aca11 removed old method _tlbia(). Signed-off-by:
Liu Yu <yu.liu@freescale.com> Signed-off-by:
Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by:
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Liu Yu authored
Signed-off-by: -
Liu Yu authored
So, KVM needs to read tlbcam_index to know exactly which TLB1 entry is unused by host. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Avi Kivity authored
Two dimensional paging is only confused by it. Signed-off-by: -
Avi Kivity authored
This actually describes what is going on, rather than alerting the reader that something strange is going on. Signed-off-by: -
Marcelo Tosatti authored
Zeroing on mmu_memory_cache_alloc is unnecessary since: - Smaller areas are pre-allocated with kmem_cache_zalloc. - Page pointed by ->spt is overwritten with prefetch_page and entries in page pointed by ->gfns are initialized before reading. [avi: zeroing pages is unnecessary] Signed-off-by:
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Joe Perches authored
Signed-off-by:
Joe Perches <joe@perches.com> Acked-by:
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Jes Sorensen authored
Provide register layout for struct kvm_regs exposed to userland. Signed-off-by:
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Avi Kivity authored
While the PIT is masked the guest cannot ack the irq, so the reinject logic will never allow the interrupt to be injected. Fix by resetting the reinjection counters on unmask. Unbreaks Xen. Signed-off-by: -
Avi Kivity authored
Allow clients to request notifications when the guest masks or unmasks a particular irq line. This complements irq ack notifications, as the guest will not ack an irq line that is masked. Currently implemented for the ioapic only. Signed-off-by: -
Avi Kivity authored
Two KVM archs support irqchips and two don't. Add a Kconfig item to make selecting between the two models easier. Signed-off-by: -
Avi Kivity authored
Using kvm_mmu_lookup_page() will result in multiple scans of the hash chains; use hlist_for_each_entry_safe() to achieve a single scan instead. Signed-off-by: -
Alexander Graf authored
VMware ESX checks if the microcode level is correct when using a barcelona CPU, in order to see if it actually can use SVM. Let's tell it we're on the safe side... Signed-off-by:
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Sheng Yang authored
MSI is always enabled by default for msi2intx=1. But if msi2intx=0, we have to disable MSI if guest require to do so. The patch also discard unnecessary msi2intx judgment if guest want to update MSI state. Notice KVM_DEV_IRQ_ASSIGN_MSI_ACTION is a mask which should cover all MSI related operations, though we only got one for now. Signed-off-by:
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Sheng Yang authored
Signed-off-by:
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Hollis Blanchard authored
After the rewrite of KVM's debug support, this code doesn't even build any more. Signed-off-by:
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Avi Kivity authored
Otherwise, two threads can create a PIT in parallel and cause a memory leak. Signed-off-by: -
Avi Kivity authored
Signed-off-by: -
Avi Kivity authored
If we aren't doing mmio there's no need to exit to userspace (which will just be confused). Signed-off-by: -
Avi Kivity authored
Allow emulate_pop() to read into arbitrary memory rather than just the source operand. Needed for complicated instructions like far returns. Signed-off-by: -
Avi Kivity authored
If we've just emulated an instruction, we won't have any valid exit reason and associated information. Fix by moving the clearing of the emulation_required flag to the exit handler. This way the exit handler can notice that we've been emulating and abort early. Signed-off-by:
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