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| author | Peter Maydell <peter.maydell@linaro.org> | 2021-07-14 12:00:56 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-07-14 12:00:56 +0100 |
| commit | 4aa2454d94cca99d86aa32e71bd7c8159df91c59 (patch) | |
| tree | 0dc72fd744dfb906d7c5a98f10e3d0f3d05b634f /docs | |
| parent | 4598b0735025042c62e85a52e4c91fc0d50ec157 (diff) | |
| parent | 294aa0437b7f6a3e94653ef661310ef621859c87 (diff) | |
Merge remote-tracking branch 'remotes/ehabkost-gl/tags/x86-next-pull-request' into staging
x86 queue, 2021-07-13
Bug fixes:
* numa: Parse initiator= attribute before cpus= attribute
(Michal Privoznik)
* Fix CPUID level for AMD (Zhenwei Pi)
* Suppress CPUID leaves not defined by the CPU vendor
(Michael Roth)
Cleanup:
* Hyper-V feature handling cleanup (Vitaly Kuznetsov)
# gpg: Signature made Tue 13 Jul 2021 17:09:01 BST
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost-gl/tags/x86-next-pull-request:
numa: Parse initiator= attribute before cpus= attribute
numa: Report expected initiator
target/i386: Fix cpuid level for AMD
target/i386: suppress CPUID leaves not defined by the CPU vendor
i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS privileges
i386: HV_HYPERCALL_AVAILABLE privilege bit is always needed
i386: kill off hv_cpuid_check_and_set()
i386: expand Hyper-V features during CPU feature expansion time
i386: make hyperv_expand_features() return bool
i386: hardcode supported eVMCS version to '1'
i386: clarify 'hv-passthrough' behavior
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/hyperv.txt | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/docs/hyperv.txt b/docs/hyperv.txt index e53c581f45..000638a2fd 100644 --- a/docs/hyperv.txt +++ b/docs/hyperv.txt @@ -170,7 +170,7 @@ Recommended: hv-frequencies 3.16. hv-evmcs =============== The enlightenment is nested specific, it targets Hyper-V on KVM guests. When -enabled, it provides Enlightened VMCS feature to the guest. The feature +enabled, it provides Enlightened VMCS version 1 feature to the guest. The feature implements paravirtualized protocol between L0 (KVM) and L1 (Hyper-V) hypervisors making L2 exits to the hypervisor faster. The feature is Intel-only. Note: some virtualization features (e.g. Posted Interrupts) are disabled when @@ -209,8 +209,11 @@ In some cases (e.g. during development) it may make sense to use QEMU in 'pass-through' mode and give Windows guests all enlightenments currently supported by KVM. This pass-through mode is enabled by "hv-passthrough" CPU flag. -Note: enabling this flag effectively prevents migration as supported features -may differ between target and destination. +Note: "hv-passthrough" flag only enables enlightenments which are known to QEMU +(have corresponding "hv-*" flag) and copies "hv-spinlocks="/"hv-vendor-id=" +values from KVM to QEMU. "hv-passthrough" overrides all other "hv-*" settings on +the command line. Also, enabling this flag effectively prevents migration as the +list of enabled enlightenments may differ between target and destination hosts. 4. Useful links |