From: guy keren (choo_at_nonexisting.hamakor.org.il)
Date: Tue 08 Jan 2002 - 10:36:08 IST
On Tue, 27 Dec 2005, Rafi Gordon wrote:
> Hello,
> Processes can change their Local Descriptor Table using
> modify_ldt() system called.
> see "manmodify_ldt" or :
> (for x386 look at include/asm-i386/unistd.h:
> #define __NR_modify_ldt 123)
>
> However, usually there is no need to manipulate the LDT
> with this system call.
>
> I saw in wine a call to modify_ldt()(libs/wine/ldt.c)
>
> I was wondering in which occasions is this
> system call being invoked: did anybody had encountered (or used himeslf)
> a call to modify_ldt() in other apps (emulators maybe ? ).
someone once told me of the following wish for a program - we allocate
small buffers that read data (from the network, for example). once we're
acknowledged that we got "enough data", we want to pass the entire
stream to a module that processes it. we want the data to be contiguous in
memory - so the processing code won't have to deal with a list of buffers.
modify_ldt can be used here.
we never got to actually implementing it - but i do wonder if this is
feasible or not.
anyone has an idea?
-- guy "For world domination - press 1, or dial 0, and please hold, for the creator." -- nob o. dy ================================================================= To unsubscribe, send mail to linux-il-request_at_linux.org.il with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail linux-il-request_at_linux.org.il
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