tree 0bc2511f1c513a919904016a0665949107f36c40
parent ab78475c76bd8c54375d8a778200c59314973d30
author Alexander Graf <agraf@suse.de> 1398766646 +0200
committer Alexander Graf <agraf@suse.de> 1398767769 +0200

KVM guest: Make pv trampoline code executable

Our PV guest patching code assembles chunks of instructions on the fly when it
encounters more complicated instructions to hijack. These instructions need
to live in a section that we don't mark as non-executable, as otherwise we
fault when jumping there.

Right now we put it into the .bss section where it automatically gets marked
as non-executable. Add a check to the NX setting function to ensure that we
leave these particular pages executable.

Signed-off-by: Alexander Graf <agraf@suse.de>