- 24 3月, 2009 40 次提交
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由 Alexander Graf 提交于
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: NAlexander Graf <agraf@suse.de> CC: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
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: NMarcelo Tosatti <mtosatti@redhat.com> Acked-by: NGleb Natapov <gleb@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Amit Shah 提交于
Some typos, comments, whitespace errors corrected in the cpuid code Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Two dimensional paging is only confused by it. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
This actually describes what is going on, rather than alerting the reader that something strange is going on. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
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: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Two KVM archs support irqchips and two don't. Add a Kconfig item to make selecting between the two models easier. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
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: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Otherwise, two threads can create a PIT in parallel and cause a memory leak. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
If we aren't doing mmio there's no need to exit to userspace (which will just be confused). Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Allow emulate_pop() to read into arbitrary memory rather than just the source operand. Needed for complicated instructions like far returns. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
The ususable bit is important for determining state validity; don't clobber it. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
The vmx guest state validity checks are full of bugs. Make them conform to the manual. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
This is an x86 specific stucture and has no business living in common code. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Certain clocks (such as TSC) in older 2.6 guests overaccount for lost ticks, causing severe time drift. Interrupt reinjection magnifies the problem. Provide an option to disable it. [avi: allow room for expansion in case we want to disable reinjection of other timers] Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Since we advertise MSR_VM_HSAVE_PA, userspace will attempt to read it even on Intel. Implement fake support for this MSR to avoid the warnings. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Izik Eidus 提交于
vmap() on guest pages hides those pages from the Linux mm for an extended (userspace determined) amount of time. Get rid of it. Signed-off-by: NIzik Eidus <ieidus@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Izik Eidus 提交于
This commit change the name of emulator_read_std into kvm_read_guest_virt, and add new function name kvm_write_guest_virt that allow writing into a guest virtual address. Signed-off-by: NIzik Eidus <ieidus@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
VMX initializes the TSC offset for each vcpu at different times, and also reinitializes it for vcpus other than 0 on APIC SIPI message. This bug causes the TSC's to appear unsynchronized in the guest, even if the host is good. Older Linux kernels don't handle the situation very well, so gettimeofday is likely to go backwards in time: http://www.mail-archive.com/kvm@vger.kernel.org/msg02955.html http://sourceforge.net/tracker/index.php?func=detail&aid=2025534&group_id=180599&atid=893831 Fix it by initializating the offset of each vcpu relative to vm creation time, and moving it from vmx_vcpu_reset to vmx_vcpu_setup, out of the APIC MP init path. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
No longer used. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Effectively reverting to the pre walk_shadow() version -- but now with the reusable for_each(). Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Eliminating a callback and a useless structure. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Using a for_each loop style removes the need to write callback and nasty casts. Implement the walk_shadow() using the for_each_shadow_entry(). Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
The AMD SVM instruction family all overload the 0f 01 /3 opcode, further multiplexing on the three r/m bits. But the code decided that anything that isn't a vmmcall must be an lidt (which shares the 0f 01 /3 opcode, for the case that mod = 3). Fix by aborting emulation if this isn't a vmmcall. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
If cr4.pge is cleared, we ought to treat any ptes in the page as non-global. This allows us to remove the check from set_spte(). Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Don't allow a vcpu with cr4.pge cleared to use a shadow page created with cr4.pge set; this might cause a cr3 switch not to sync ptes that have the global bit set (the global bit has no effect if !cr4.pge). This can only occur on smp with different cr4.pge settings for different vcpus (since a cr4 change will resync the shadow ptes), but there's no cost to being correct here. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Instead of "calculating" it on every shadow page allocation, set it once when switching modes, and copy it when allocating pages. This doesn't buy us much, but sets up the stage for inheriting more information related to the mmu setup. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Add the remaining bits to make use of debug registers also for guest debugging, thus enabling the use of hardware breakpoints and watchpoints. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
So far KVM only had basic x86 debug register support, once introduced to realize guest debugging that way. The guest itself was not able to use those registers. This patch now adds (almost) full support for guest self-debugging via hardware registers. It refactors the code, moving generic parts out of SVM (VMX was already cleaned up by the KVM_SET_GUEST_DEBUG patches), and it ensures that the registers are properly switched between host and guest. This patch also prepares debug register usage by the host. The latter will (once wired-up by the following patch) allow for hardware breakpoints/watchpoints in guest code. If this is enabled, the guest will only see faked debug registers without functionality, but with content reflecting the guest's modifications. Tested on Intel only, but SVM /should/ work as well, but who knows... Known limitations: Trapping on tss switch won't work - most probably on Intel. Credits also go to Joerg Roedel - I used his once posted debugging series as platform for this patch. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
When single-stepping over STI and MOV SS, we must clear the corresponding interruptibility bits in the guest state. Otherwise vmentry fails as it then expects bit 14 (BS) in pending debug exceptions being set, but that's not correct for the guest debugging case. Note that clearing those bits is safe as we check for interruptibility based on the original state and do not inject interrupts or NMIs if guest interruptibility was blocked. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic part, controlling the "main switch" and the single-step feature. The arch specific part adds an x86 interface for intercepting both types of debug exceptions separately and re-injecting them when the host was not interested. Moveover, the foundation for guest debugging via debug registers is layed. To signal breakpoint events properly back to userland, an arch-specific data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block contains the PC, the debug exception, and relevant debug registers to tell debug events properly apart. The availability of this new interface is signaled by KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are provided. Note that both SVM and VTX are supported, but only the latter was tested yet. Based on the experience with all those VTX corner case, I would be fairly surprised if SVM will work out of the box. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
VMX differentiates between processor and software generated exceptions when injecting them into the guest. Extend vmx_queue_exception accordingly (and refactor related constants) so that we can use this service reliably for the new guest debugging framework. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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