BMC/Intel-BMC/linux.git/Documentation/virtual/kvm/api.txt, branch dev-5.2

KVM: x86: Modify struct kvm_nested_state to have explicit fields for data

2019-06-19T14:11:52+00:00

Improve the KVM_{GET,SET}_NESTED_STATE structs by detailing the format of VMX nested state data in a struct. In order to avoid changing the ioctl values of KVM_{GET,SET}_NESTED_STATE, there is a need to preserve sizeof(struct kvm_nested_state). This is done by defining the data struct as "data.vmx[0]". It was the most elegant way I found to preserve struct size while still keeping struct readable and easy to maintain. It does have a misfortunate side-effect that now it has to be accessed as "data.vmx[0]" rather than just "data.vmx". Because we are already modifying these structs, I also modified the following: * Define the "format" field values as macros. * Rename vmcs_pa to vmcs12_pa for better readability. Signed-off-by: Liran Alon [Remove SVM stubs, add KVM_STATE_NESTED_VMX_VMCS12_SIZE. - Paolo] Reviewed-by: Liran Alon Signed-off-by: Paolo Bonzini

KVM: fix typo in documentation

2019-06-18T15:46:45+00:00

The documentation mentions a non-existing capability KVM_CAP_USER_MEM.s The right name is KVM_CAP_USER_MEMORY. Signed-off-by: Dennis Restle Signed-off-by: Paolo Bonzini

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2019-05-17T17:33:30+00:00

Pull KVM updates from Paolo Bonzini: "ARM: - support for SVE and Pointer Authentication in guests - PMU improvements POWER: - support for direct access to the POWER9 XIVE interrupt controller - memory and performance optimizations x86: - support for accessing memory not backed by struct page - fixes and refactoring Generic: - dirty page tracking improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (155 commits) kvm: fix compilation on aarch64 Revert "KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU" kvm: x86: Fix L1TF mitigation for shadow MMU KVM: nVMX: Disable intercept for FS/GS base MSRs in vmcs02 when possible KVM: PPC: Book3S: Remove useless checks in 'release' method of KVM device KVM: PPC: Book3S HV: XIVE: Fix spelling mistake "acessing" -> "accessing" KVM: PPC: Book3S HV: Make sure to load LPID for radix VCPUs kvm: nVMX: Set nested_run_pending in vmx_set_nested_state after checks complete tests: kvm: Add tests for KVM_SET_NESTED_STATE KVM: nVMX: KVM_SET_NESTED_STATE - Tear down old EVMCS state before setting new state tests: kvm: Add tests for KVM_CAP_MAX_VCPUS and KVM_CAP_MAX_CPU_ID tests: kvm: Add tests to .gitignore KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 KVM: Fix kvm_clear_dirty_log_protect off-by-(minus-)one KVM: Fix the bitmap range to copy during clear dirty KVM: arm64: Fix ptrauth ID register masking logic KVM: x86: use direct accessors for RIP and RSP KVM: VMX: Use accessors for GPRs outside of dedicated caching logic KVM: x86: Omit caching logic for always-available GPRs kvm, x86: Properly check whether a pfn is an MMIO or not ...

Merge tag 'kvmarm-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

2019-05-15T21:41:43+00:00

KVM/arm updates for 5.2 - guest SVE support - guest Pointer Authentication support - Better discrimination of perf counters between host and guests Conflicts: include/uapi/linux/kvm.h

Merge tag 'kvm-ppc-next-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD

2019-05-15T21:39:38+00:00

PPC KVM update for 5.2 * Support for guests to access the new POWER9 XIVE interrupt controller hardware directly, reducing interrupt latency and overhead for guests. * In-kernel implementation of the H_PAGE_INIT hypercall. * Reduce memory usage of sparsely-populated IOMMU tables. * Several bug fixes. Second PPC KVM update for 5.2 * Fix a bug, fix a spelling mistake, remove some useless code.

KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2

2019-05-08T11:48:24+00:00

The previous KVM_CAP_MANUAL_DIRTY_LOG_PROTECT has some problem which blocks the correct usage from userspace. Obsolete the old one and introduce a new capability bit for it. Suggested-by: Paolo Bonzini Signed-off-by: Peter Xu Signed-off-by: Paolo Bonzini

KVM: fix KVM_CLEAR_DIRTY_LOG for memory slots of unaligned size

2019-04-30T19:32:19+00:00

If a memory slot's size is not a multiple of 64 pages (256K), then the KVM_CLEAR_DIRTY_LOG API is unusable: clearing the final 64 pages either requires the requested page range to go beyond memslot->npages, or requires log->num_pages to be unaligned, and kvm_clear_dirty_log_protect requires log->num_pages to be both in range and aligned. To allow this case, allow log->num_pages not to be a multiple of 64 if it ends exactly on the last page of the slot. Reported-by: Peter Xu Fixes: 98938aa8edd6 ("KVM: validate userspace input in kvm_clear_dirty_log_protect()", 2019-01-02) Signed-off-by: Paolo Bonzini

Revert "KVM: doc: Document the life cycle of a VM and its resources"

2019-04-30T19:30:49+00:00

This reverts commit 919f6cd8bb2fe7151f8aecebc3b3d1ca2567396e. The patch was applied twice. The first commit is eca6be566d47029f945a5f8e1c94d374e31df2ca. Reported-by: Cornelia Huck Signed-off-by: Radim Krčmář Signed-off-by: Paolo Bonzini

KVM: fix KVM_CLEAR_DIRTY_LOG for memory slots of unaligned size

2019-04-30T19:22:15+00:00

KVM: PPC: Book3S HV: XIVE: Add get/set accessors for the VP XIVE state

2019-04-30T09:35:16+00:00

The state of the thread interrupt management registers needs to be collected for migration. These registers are cached under the 'xive_saved_state.w01' field of the VCPU when the VPCU context is pulled from the HW thread. An OPAL call retrieves the backup of the IPB register in the underlying XIVE NVT structure and merges it in the KVM state. Signed-off-by: Cédric Le Goater Reviewed-by: David Gibson Signed-off-by: Paul Mackerras