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Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall
From: |
Vince Weaver |
Subject: |
Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall |
Date: |
Mon, 8 Feb 2010 09:57:15 -0500 (EST) |
On Sun, 7 Feb 2010, Richard Henderson wrote:
>
> I imagine that QEMU's VDSO would not have the complicated bits that the
> kernel's version does, where it arranges to read the clock without going into
> kernel space. I imagine QEMU would simply stuff a normal syscall sequence in
> there, which would automatically be emulated in the normal way.
For what it's worth, this is how various other systems I'm aware of handle
x86_64 VDSOs (both Valgrind and the m5 simulator do it this way).
Vince
- 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, 2010/02/05
- 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 <=
Re: [Qemu-devel] [PATCH] User mode: Handle x86_64 vsyscall, Richard Henderson, 2010/02/06