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Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall
From: |
Laurent Desnogues |
Subject: |
Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall |
Date: |
Sat, 6 Feb 2010 02:37:14 +0100 |
On Fri, Feb 5, 2010 at 11:57 PM, Stefan Weil <address@hidden> wrote:
> Laurent Desnogues schrieb:
[...]
>
> I'm still struggling with bntest and other x86_64-linux-user software
> calling any of the vsyscall functions.
>
> Laurent, your vsyscall patch only works on x86_64 hosts.
>
> A lot of software calls time() which uses vsyscall on x86_64 which
> does not work with x86_64-linux-user mode.
I'm not sure I understand what you mean. Did you try
on some other host and it failed? Was your host
32-bit? If so, I'm afraid user-mode will fail for more
reasons than vsyscall.
> So the status of x86_64-linux-user is not more than experimental :-(
>
> I tried to modify x86_64-linux-user to set up a vsyscall page in high
> memory,
> but this seems to be difficult (at least with 32 bit host).
>
> Any hints how this should be done are welcome.
My patch explicitly prevents the linking of the vsyscall
page.
Could you provide more info about your host?
Laurent
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Stefan Weil, 2010/02/04
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Stefan Weil, 2010/02/05
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall,
Laurent Desnogues <=
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Stefan Weil, 2010/02/06
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Laurent Desnogues, 2010/02/06
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Jamie Lokier, 2010/02/06
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, malc, 2010/02/06
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Laurent Desnogues, 2010/02/07
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Richard Henderson, 2010/02/07
- Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Vince Weaver, 2010/02/08
Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Richard Henderson, 2010/02/06