From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Eduardo Habkost <ehabkost@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>
Subject: [PATCH 0/3] i386: Make sure TSC frequency is preserved across migration when Hyper-V reenlightenment is in use
Date: Thu, 18 Mar 2021 17:02:46 +0100 [thread overview]
Message-ID: <20210318160249.1084178-1-vkuznets@redhat.com> (raw)
KVM doesn't fully support Hyper-V reenlightenment notifications on
migration. In particular, it doesn't support emulating TSC frequency
of the source host by trapping all TSC accesses so unless TSC scaling
is supported on the destination host and KVM_SET_TSC_KHZ succeeded, it
is unsafe to proceed with migration.
Vitaly Kuznetsov (3):
i386: Make Hyper-V related sections KVM only
i386: Fix 'hypercall_hypercall' typo
i386: Make sure kvm_arch_set_tsc_khz() succeeds on migration when
'hv-reenlightenment' was exposed
target/i386/kvm/hyperv.h | 1 +
target/i386/kvm/kvm.c | 11 ++++++++++
target/i386/machine.c | 45 ++++++++++++++++++++++++++++++++++++++--
3 files changed, 55 insertions(+), 2 deletions(-)
--
2.30.2
next reply other threads:[~2021-03-18 16:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 16:02 Vitaly Kuznetsov [this message]
2021-03-18 16:02 ` [PATCH 1/3] i386: Make Hyper-V related sections KVM only Vitaly Kuznetsov
2021-03-18 16:06 ` Paolo Bonzini
2021-03-18 16:02 ` [PATCH 2/3] i386: Fix 'hypercall_hypercall' typo Vitaly Kuznetsov
2021-03-18 16:12 ` Paolo Bonzini
2021-03-18 16:02 ` [PATCH 3/3] i386: Make sure kvm_arch_set_tsc_khz() succeeds on migration when 'hv-reenlightenment' was exposed Vitaly Kuznetsov
2021-03-18 16:12 ` Paolo Bonzini
2021-03-18 16:38 ` Vitaly Kuznetsov
2021-03-18 17:36 ` Paolo Bonzini
2021-03-19 9:41 ` Vitaly Kuznetsov
2021-03-19 11:04 ` Paolo Bonzini
2021-03-19 12:02 ` Vitaly Kuznetsov
2021-03-18 18:03 ` Marcelo Tosatti
2021-03-19 9:46 ` Vitaly Kuznetsov
2021-03-18 20:13 ` Dr. David Alan Gilbert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210318160249.1084178-1-vkuznets@redhat.com \
--to=vkuznets@redhat.com \
--cc=dgilbert@redhat.com \
--cc=ehabkost@redhat.com \
--cc=mtosatti@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).