|Subject:||[Qemu-devel] [AMD64] Possible problem with the DF flag during the SYSCALL instruction|
|Date:||Thu, 20 Mar 2008 11:44:02 +0100|
|User-agent:||Thunderbird 18.104.22.168 (X11/20070521)|
Hi,yesterday I tried to mask off the DF flag from the RFLAGS register during the SYSCALL instruction by specifying this bit in the SFMASK MSR register while running HelenOS.
With QEMU, this didn't work (but it worked in Simics, for instance), so I suspect that there is something wrong with handling RFLAGS.DF during SYSCALL. Anyone wants to have a look?
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