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QEMU e820 reservation patch
Hi,
Kevin and I have agreed on the approach for this one now. So here isthe latest version of the patch for QEMU, submitting e820 reservationentries via fw_cfg.
Cheers,Jes
Use qemu-cfg to provide the BIOS with an optional table of e820 entries....
KVM: x86: Fix up misreported CPU features
From qemu-kvm: Kernels before 2.6.30 misreported some essential CPUfeatures via KVM_GET_SUPPORTED_CPUID. Fix them up.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
KVM: Request setting of nmi_pending and sipi_vector
The final version of VCPU events in 2.6.33 will allow to skipnmi_pending and sipi_vector on KVM_SET_VCPU_EVENTS. For now let's writethem unconditionally, which is unproblematic for upstream due to missing...
Add KVM paravirt cpuid leaf
Initialize KVM paravirt cpuid leaf and allow user to control guestvisible PV features through -cpu flag.
Signed-off-by: Gleb Natapov <gleb@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
remove pending exception on vcpu reset.
Without this qemu can even start on kvm modules with events supportsince default value of exception_injected in zero and this is #DEexception.
kvm: x86: Use separate exception_injected CPUState field
Marcelo correctly remarked that there are usage conflicts between QEMUcore code and KVM /wrt exception_index. So spend a separate field andalso save/restore it properly.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>...
v2: properly save kvm system time msr registers
Currently, the msrs involved in setting up pvclock are not saved overmigration and/or save/restore. This patch puts their value in specialfields in our CPUState, and deal with them using vmstate.
kvm also has to account for it, by including them in the msr list...
kvm: x86: Fix initial kvm_has_msr_star
KVM_GET_MSR_INDEX_LIST returns -E2BIG when the provided space is toosmall for all MSRs. But this is precisely the error we trigger with theinitial request in order to obtain that size. Do not fail in that case.
This caused a subtle corruption of the guest state as MSR_STAR was not...
kvm: x86: Add support for VCPU event states
This patch extends the qemu-kvm state sync logic with support forKVM_GET/SET_VCPU_EVENTS, giving access to yet missing exception,interrupt and NMI states.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
kvm: x86: Fix merge artifact of f8d926e9 about mp_state
kvm: Add arch reset handler
Will be required by succeeding changes.
kvm: x86: Refactor use of interrupt_bitmap
Drop interrupt_bitmap from the cpustate and solely rely on the integerinterupt_injected. This prepares us for the new injected-interruptinterface, which will deprecate the bitmap, while preservingcompatibility....
kvm: Move KVM mp_state accessors to i386-specific code
Unbreaks PowerPC and S390 KVM builds.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
gcc wants 1st static and then const
Signed-off-by: Juan Quintela <quintela@redhat.com>Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
kvm: Work around borken MSR_GET_INDEX_LIST
Allocate enough memory for KVM_GET_MSR_INDEX_LIST as older kernels shotfar beyond their limits, corrupting user space memory.
preserve the hypervisor bit while KVM trims the CPUID bits
The KVM kernel will disable all bits in CPUID which are not present inthe host. As this is mostly true for the hypervisor bit (1.ecx),preserve its value before the trim and restore it afterwards....
fix KVMs GET_SUPPORTED_CPUID feature usage
If we want to trim the user provided CPUID bits for KVM to be not greaterthan that of the host, we should not remove the bits after we sentthem to the kernel.This fixes the masking of features that are not present on the host by...
kvm: x86: Save/restore KVM-specific CPU states
Save and restore all so far neglected KVM-specific CPU states. Handlingthe TSC stabilizes migration in KVM mode. The interrupt_bitmap andmp_state are currently unused, but will become relevant for in-kernel...
kvm: work around supported cpuid ioctl() brokenness
KVM_GET_SUPPORTED_CPUID has been known to fail to return -E2BIGwhen it runs out of entries. Detect this by always trying againwith a bigger table if the ioctl() fills the table.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
kvm: Add support for querying supported cpu features
kvm does not support all cpu features; add support for dunamically queryingthe supported feature set.
Signed-off-by: Avi Kivity <avi@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
kvm: Fix cpuid initialization (Jan Kiszka)
Fix (more or less) spurious guest boot failures due to corrupted cpuidstates. The reason was insufficient initialization of cpuid entriesbefore passing them to the kernel.
At this chance also fix improper entry pointer progression and simplify...
kvm: Drop kvm_patch_opcode_byte (Jan Kiszka)
As cpu_memory_rw_debug is now capable of modifying ROM, we can drop ourown patch function.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6906 c046a42c-6fe2-441c-8c8c-71466251a162
Guest debugging support for KVM (Jan Kiszka)
This is a backport of the guest debugging support for the KVMaccelerator that is now part of the KVM tree. It implements the reworkedKVM kernel API for guest debugging (KVM_CAP_SET_GUEST_DEBUG) which isnot yet part of any mainline kernel but will probably be 2.6.30 stuff....
KVM: cpuid function 2: store all values (Amit Shah)
Incrementing the array index was missed in the previous series which causesus to not store all the values.
Signed-off-by: Amit Shah <amit.shah@redhat.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...
KVM: Get all cpuid values from function 2 (Amit Shah)
cpuid function 2 can have multiple values to describe cache behaviour.Loop till we have fetched all the values.
KVM: Fetch sub-leaf cpuid values for functions 4, 0xb, 0xd. (Amit Shah)
CPUID functions 4, 0xb and 0xd have sub-leaf values which depend on theinput value of ECX. Store these values as well.
KVM: CPUID takes ecx as input value for some functions (Amit Shah)
The CPUID instruction takes the value of ECX as an input parameterin addition to the value of EAX as the count for functions 4, 0xband 0xd. Make sure we pass the value to the instruction....
targets: remove error handling from qemu_malloc() callers (Avi Kivity)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6530 c046a42c-6fe2-441c-8c8c-71466251a162
kvm-x86: Remove eflags conversion into emulator format (Jan Kiszka)
It seems that the conversion of the kernel-delivered eflags state intoqemu's internal split representation was once needed in an older kvmdesign (register read-back may have taken place from inside cpu_exec)....
Initialize msr list size properly in KVM
Hollis Blanchard noticed that the last commit was not sufficient. We also needto initialize the msr size in our newly allocated list.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6018 c046a42c-6fe2-441c-8c8c-71466251a162
Correctly initialize msr list in KVM
I believe this was spotted by Gerd Hoffman but I can't find his patchnow. This will cause very subtle corruption on the heap because wedon't allocate the appropriately sized buffer.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...
Fix crash in kvm.c (Stefan Weil)
Fix crash with kvm enabled.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5984 c046a42c-6fe2-441c-8c8c-71466251a162
Define kvm_ioctl in the same way as ioctl
The third argument to ioctl is a ... which allows any value to be passed. Inpractice, glibc always treats the argument as a void *.
Do the same thing for the kvm ioctls to keep things consistent with atraditional ioctl....
Add missing files to KVM commit.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5629 c046a42c-6fe2-441c-8c8c-71466251a162