tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]



On Thu, Nov 04, 2010 at 01:36:15AM +0900, Masao Uebayashi wrote:
> I have found that XIP is very similar to AMAP_SHARED, at the point
> where XIP supports "write" operation.
> Imagine a FlashROM page is XIP'ed and shared as vnode by processes.
> The user rewrite the firmware written onto the FlashROM.  To keep
> processes running, we need to copy the XIP pages into RAM (page
> cache), put those pages into the vnode, then notify processes to
> update their VA.  This is another kind of COW, done in another
s/VA/PV/.  VA stays same.

> layer.
> Of course, we need PV tracking here.

Home | Main Index | Thread Index | Old Index