From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: "Dong, Eddie" <eddie.dong-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: [PATCH] lighweight VM Exit
Date: Wed, 16 May 2007 18:40:34 +0300 [thread overview]
Message-ID: <464B25F2.5050701@qumranet.com> (raw)
In-Reply-To: <10EA09EFD8728347A513008B6B0DA77A014E8AB2-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
Dong, Eddie wrote:
> Avi Kivity wrote:
>
>> This looks nicer, however I get an oops on fxrstor in
>> kvm_load_guest_fpu(), when running user/test/vmexit.flat compiled for
>> i386, on an x86_64 host.
>>
>>
> Avi:
> Per your guideline, I did following under kvm-userspace/user:
> 1: make test/bootstrap
> 2: make test/vmexit.flat
> 3: ./kvmctl test/bootstrap test/vmexit.flat
> I got:
> rip 0000000000100008 rflags 00010006
> cs 0008 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type b l 0 g 1 avl 0)
> ds 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
> es 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
> ss 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
> fs 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
> gs 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
> tr 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
> ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
> gdt f0050/17
> idt 0/0
> cr0 60000011 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
> Aborted
> dmesg shows:
> [root@vt32-pae user]# dmesg
> emulation failed but !mmio_needed? rip 100008 61 74 65 6e
> handle_exception: emulate fail
>
>
> Then I roll back to original commit
> ca76d209b88c344fc6a8eac17057c0088a3d6940,
> I get same error.
>
>
> Later on I tried 32 on 64, I did:
> 1: make test/bootstrap
> 2: i386 make test/vmexit.flat
> 3: ./kvmctl test/bootstrap test/vmexit.flat
> I got same thing.
>
> Stranger, did u try these on previous commit?
> thx,eddie
>
>
Strange. On current HEAD, I get
[root@qu0054 kvm]# taskset 1 ./user/kvmctl user/test/bootstrap
user/test/vmexit.flat
rax 0000000000000000 rbx 0000000000000000 rcx 0000000000000000 rdx
0000000000000600
rsi 0000000000000000 rdi 0000000000000000 rsp 0000000000000000 rbp
0000000000000000
r8 0000000000000000 r9 0000000000000000 r10 0000000000000000 r11
0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15
0000000000000000
rip 000000000000fff0 rflags 00023002
cs f000 (000f0000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (07ffd000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt 0/ffff
idt 0/ffff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
GUEST: vmexit latency: 5499
[root@qu0054 kvm]# taskset 1 ./user/kvmctl user/test/bootstrap
user/test/vmexit.flat
rax 0000000000000000 rbx 0000000000000000 rcx 0000000000000000 rdx
0000000000000600
rsi 0000000000000000 rdi 0000000000000000 rsp 0000000000000000 rbp
0000000000000000
r8 0000000000000000 r9 0000000000000000 r10 0000000000000000 r11
0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15
0000000000000000
rip 000000000000fff0 rflags 00023002
cs f000 (000f0000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (07ffd000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt 0/ffff
idt 0/ffff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
GUEST: vmexit latency: 4726
First run is with 64-bit guest, second with 32-bit guest.
Can you send your test/bootstrap and test/vmexit.flat?
--
error compiling committee.c: too many arguments to function
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
next prev parent reply other threads:[~2007-05-16 15:40 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-10 9:29 guest state leak into host Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A016AB9E3-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-13 10:51 ` Avi Kivity
[not found] ` <4646EDB3.6030602-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 14:57 ` [PATCH] lighweight VM Exit (was:RE: guest state leak into host) Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A016FBD91-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-14 15:14 ` [PATCH] lighweight VM Exit Avi Kivity
[not found] ` <46487CD7.8070408-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 15:34 ` Christoph Hellwig
2007-05-15 6:10 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A016FC1F2-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-15 7:39 ` Avi Kivity
[not found] ` <464963A3.7090505-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-15 10:12 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A016FC3CD-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-15 13:48 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A016FC419-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-16 8:35 ` Avi Kivity
[not found] ` <464AC26D.8040901-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-16 15:23 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A014E8AB2-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-16 15:40 ` Avi Kivity [this message]
[not found] <10EA09EFD8728347A513008B6B0DA77A014E8AB5@pdsmsx411.ccr.corp.intel.com>
[not found] ` <10EA09EFD8728347A513008B6B0DA77A014E8AB5-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-16 16:04 ` Avi Kivity
[not found] ` <464B2B89.3060009-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-17 14:22 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A0174CB56-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-17 14:54 ` Avi Kivity
[not found] ` <464C6C96.9090202-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-17 15:56 ` Avi Kivity
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=464B25F2.5050701@qumranet.com \
--to=avi-atkuwr5tajbwk0htik3j/w@public.gmane.org \
--cc=eddie.dong-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.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