Displaying 1 result from an estimated 1 matches for "pte_machine_to_phys".
2008 Mar 19
10
Illegal PV kernel pfm/pfn translations on PROT_NONE ioremaps
Hi,
On paravirt x86 (both 32- and 64-bit), since cset 13998:
http://xenbits.xensource.com/xen-unstable.hg?rev/13998
we translate all ptes from being mfn-based to pfn-based when the
hardware _PAGE_PRESENT bit is cleared. We do this for PROT_NONE pages,
which appear to the HV to be non-present, but which are special-cased in
the kernel to appear present (a different bit in the