On Sun, 2 Jun 2002 15:50, Oliver Neukum wrote: > Am Sonntag, 2. Juni 2002 13:11 schrieb Brad Hards: > > On Mon, 3 Jun 2002 00:44, Oliver Neukum wrote: > > > Am Sonntag, 2. Juni 2002 01:16 schrieben Sie: > > > > On Sun, 2 Jun 2002 02:07, Oliver Neukum wrote: > > > > > The problem is that this cannot simply work, because a filesystem > > > > > may be mounted by nfs. > > > > > > > > How is this a problem? You simply need to bring the driver up before > > > > you remount the nfs filesystem. If you assume that your firmware is > > > > on that filesystem, then you couldn't have mounted it in the first > > > > place. > > > > > > > > What am I missing here? > > > > > > Paging. As soon as user space is running, dirty pages may be written > > > out And in order to run a user space firmware loader, user space must > > > be functional, or am I overlooking something? > > > > The software support option requires swap to store to, right? That had > > better be on a local disk, or it doesn't matter whether the firmware is > > in userspace or not. Realistically, swap over a network block device > > isn't a problem worth trying to solve. > > Not only swap, but any file opened for writing may be written to > if you allocate memory. If a file is opened for writing, it doesn't matter whether you allocate memory or not, it still may be written to. Sync, journalling, that process dirtying more pages, whatever.
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