Laurent Vivier, le Wed 28 Nov 2007 16:00:17 +0100, a écrit : > Le mercredi 28 novembre 2007 à 14:24 +0000, Samuel Thibault a écrit : > > Laurent Vivier, le Wed 28 Nov 2007 15:02:50 +0100, a écrit : > > > + ret = posix_memalign((void**)&buf, 0x200, 512); > > > > For making this more easily portable, maybe it should be a new > > qemu_memalign() function? Also, the alignment may probably be better as > > a global macro, since the alignment requirements depend on the OS. > > I think O_DIRECT is linux specific
Yes. > whereas posix_memalign() is part of POSIX specification. Yes, but not so many systems have it. > And the memory alignement should only needed by the implemetation of > O_DIRECT on linux. IIRC it is also required e.g. by the equivalent raw devices of Solaris. It happens that I also need it for the Xen stubdomains support :) Samuel
