From: Paolo Bonzini <pbonzini@redhat.com>
To: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Oliver Upton <oupton@google.com>
Subject: Re: [GIT PULL] KVM changes for Linux 5.6-rc4
Date: Tue, 3 Mar 2020 11:58:27 +0100 [thread overview]
Message-ID: <8fbeb3c2-9627-bf41-d798-bafba22073e3@redhat.com> (raw)
In-Reply-To: <87zhcyfvmk.fsf@vitty.brq.redhat.com>
On 02/03/20 19:40, Vitaly Kuznetsov wrote:
>
> qemu-system-x86-23579 [005] 22018.775584: kvm_exit: reason EPT_VIOLATION rip 0xfffff802987d6169 info 181 0
> qemu-system-x86-23579 [005] 22018.775584: kvm_nested_vmexit: rip fffff802987d6169 reason EPT_VIOLATION info1 181 info2 0 int_info 0 int_info_err 0
> qemu-system-x86-23579 [005] 22018.775585: kvm_page_fault: address febd0000 error_code 181
> qemu-system-x86-23579 [005] 22018.775592: kvm_emulate_insn: 0:fffff802987d6169: f3 a5
> qemu-system-x86-23579 [005] 22018.775593: kvm_emulate_insn: 0:fffff802987d6169: f3 a5 FAIL
> qemu-system-x86-23579 [005] 22018.775596: kvm_inj_exception: #UD (0x0)
>
> We probably need to re-enable instruction emulation for something...
This is a rep movsw instruction, it shouldn't be intercepted. I think
we have a stale ctxt->intercept because the
/* Fields above regs are cleared together. */
comment is not true anymore since
commit c44b4c6ab80eef3a9c52c7b3f0c632942e6489aa
Author: Bandan Das <bsd@redhat.com>
Date: Wed Apr 16 12:46:12 2014 -0400
KVM: emulate: clean up initializations in init_decode_cache
A lot of initializations are unnecessary as they get set to
appropriate values before actually being used. Optimize
placement of fields in x86_emulate_ctxt
Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo
next prev parent reply other threads:[~2020-03-03 10:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 18:57 [GIT PULL] KVM changes for Linux 5.6-rc4 Paolo Bonzini
2020-02-24 20:25 ` pr-tracker-bot
2020-03-02 18:40 ` Vitaly Kuznetsov
2020-03-03 10:58 ` Paolo Bonzini [this message]
2020-03-03 13:02 ` Vitaly Kuznetsov
2020-03-03 13:07 ` Paolo Bonzini
2020-03-03 13:38 ` Vitaly Kuznetsov
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=8fbeb3c2-9627-bf41-d798-bafba22073e3@redhat.com \
--to=pbonzini@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=oupton@google.com \
--cc=vkuznets@redhat.com \
/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).