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| author | Paul Mackerras <paulus@samba.org> | 2013-09-20 04:52:47 (GMT) |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-17 12:45:04 (GMT) |
| commit | 5cd92a9521d35013fff904d3c805323027a33d73 (patch) | |
| tree | 94037f1b656b8a029749061660a7575a8941dd5e /security | |
| parent | 03a9c90334d611c3006ac9569579f25f64812bc1 (diff) | |
| download | linux-5cd92a9521d35013fff904d3c805323027a33d73.tar.xz | |
KVM: PPC: Book3S PR: Correct errors in H_ENTER implementation
The implementation of H_ENTER in PR KVM has some errors:
* With H_EXACT not set, if the HPTEG is full, we return H_PTEG_FULL
as the return value of kvmppc_h_pr_enter, but the caller is expecting
one of the EMULATE_* values. The H_PTEG_FULL needs to go in the
guest's R3 instead.
* With H_EXACT set, if the selected HPTE is already valid, the H_ENTER
call should return a H_PTEG_FULL error.
This fixes these errors and also makes it write only the selected HPTE,
not the whole group, since only the selected HPTE has been modified.
This also micro-optimizes the calculations involving pte_index and i.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions