diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-10-11 11:59:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-12 19:21:39 +0100 |
| commit | a991063ce57684a2259688886643cf1c430f8188 (patch) | |
| tree | 44047d72e51fca15bd2d84f0c80af1b2048f559e /include | |
| parent | 580c79e7e3e50afbd5a69b2b6ab2c61c5225f48e (diff) | |
kvm: x86, powerpc: do not allow clearing largepages debugfs entry
commit 833b45de69a6016c4b0cebe6765d526a31a81580 upstream.
The largepages debugfs entry is incremented/decremented as shadow
pages are created or destroyed. Clearing it will result in an
underflow, which is harmless to KVM but ugly (and could be
misinterpreted by tools that use debugfs information), so make
this particular statistic read-only.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm-ppc@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index d42a36e4e6c2..3d0a6194ce88 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1034,6 +1034,7 @@ enum kvm_stat_kind { struct kvm_stat_data { int offset; + int mode; struct kvm *kvm; }; @@ -1041,6 +1042,7 @@ struct kvm_stats_debugfs_item { const char *name; int offset; enum kvm_stat_kind kind; + int mode; }; extern struct kvm_stats_debugfs_item debugfs_entries[]; extern struct dentry *kvm_debugfs_dir; |