| Message ID | 20210803191818.993968-3-agruenba@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | gfs2: Fix mmap + page fault deadlocks | expand |
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c index 617eba82531c..d89cf802d9aa 100644 --- a/arch/powerpc/kernel/kvm.c +++ b/arch/powerpc/kernel/kvm.c @@ -669,7 +669,7 @@ static void __init kvm_use_magic_page(void) on_each_cpu(kvm_map_magic_page, &features, 1); /* Quick self-test to see if the mapping works */ - if (!fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) { + if (fault_in_pages_readable((const char *)KVM_MAGIC_PAGE, sizeof(u32))) { kvm_patching_worked = false; return; }
When switching from __get_user to fault_in_pages_readable, commit 9f9eae5ce717 broke kvm_use_magic_page: fault_in_pages_readable returns 0 on success. Fix that. Fixes: 9f9eae5ce717 ("powerpc/kvm: Prefer fault_in_pages_readable function") Cc: stable@vger.kernel.org # v4.18+ Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> --- arch/powerpc/kernel/kvm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)