aboutsummaryrefslogtreecommitdiff
path: root/cpu-exec.c
diff options
context:
space:
mode:
authorDavid Gibson <david@gibson.dropbear.id.au>2011-08-03 21:02:19 +0000
committerAlexander Graf <agraf@suse.de>2011-10-06 09:48:03 +0200
commitf73a2575a3bce8a3c487331c918d2c0f9b2e489d (patch)
tree0c999928e4a3dd0088f5cc2bef0a1d982ad747c3 /cpu-exec.c
parent9dfef5aae422d479d8e561889da05cf31d850d5c (diff)
pseries: More complete WIMG validation in H_ENTER code
Currently our implementation of the H_ENTER hypercall, which inserts a mapping in the hash page table assumes that only ordinary memory is ever mapped, and only permits mapping attribute bits accordingly (WIMG==0010). However, we intend to start adding emulated IO to the pseries platform (and real IO with PCI passthrough on kvm) which means this simple test will no longer suffice. This patch extends the h_enter validation code to check if the given address is a RAM address. If it is it enforces WIMG==0010, otherwise it assumes that it is an IO mapping and instead enforces WIMG=010x. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'cpu-exec.c')
0 files changed, 0 insertions, 0 deletions