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authorPaolo Bonzini <pbonzini@redhat.com>2019-09-30 18:48:44 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2019-09-30 18:52:00 +0200
commit833b45de69a6016c4b0cebe6765d526a31a81580 (patch)
tree3587bb045750f3a8163657a5302dac6bc7324a7d /include
parent2e4a75976dfb88ee6ce019b1d4fa507aabd02c14 (diff)
downloadlinux-833b45de69a6016c4b0cebe6765d526a31a81580.tar.bz2
kvm: x86, powerpc: do not allow clearing largepages debugfs entry
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. Cc: kvm-ppc@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm_host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index fcb46b3374c6..719fc3e15ea4 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1090,6 +1090,7 @@ enum kvm_stat_kind {
struct kvm_stat_data {
int offset;
+ int mode;
struct kvm *kvm;
};
@@ -1097,6 +1098,7 @@ 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;