Re: Sharing memory between user and kernel spaces [Re: copy_to/from_user and a bottom half]

From: Ulrich Drepper (drepper@redhat.com)
Date: Fri May 19 2000 - 06:53:52 EDT

Next message: Thomas Sailer: "Re: Linux-2.2.15: access_ok"

Previous message: Tim Waugh: "Re: Documentation/kernel-doc-nano-HOWTO.txt"
Next in thread: jmcmullan@linuxcare.com: "Re: Sharing memory between user and kernel spaces [Re: copy_to/from_user and a bottom half]"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

"Andi Kleen" <ak@suse.de> writes:

> > 1. App allocates memory in user space (page-aligned).
> > (BTW, I didn't find the way of doing it on Linux beside to allocate
> > memory with malloc() and then align it to the page boundaries).
>
> mmap()

memalign() (or posix_memalign() in glibc 2.2).

-- ---------------. drepper at gnu.org ,-. 1325 Chesapeake Terrace Ulrich Drepper \ ,-------------------' \ Sunnyvale, CA 94089 USA Red Hat `--' drepper at redhat.com `------------------------

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/

Next message: Thomas Sailer: "Re: Linux-2.2.15: access_ok"
Previous message: Tim Waugh: "Re: Documentation/kernel-doc-nano-HOWTO.txt"
Next in thread: jmcmullan@linuxcare.com: "Re: Sharing memory between user and kernel spaces [Re: copy_to/from_user and a bottom half]"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Fri May 19 2000 - 06:56:08 EDT