x86: cpa: fix split thinko
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 23f0aa3..a2ee317 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -216,8 +216,12 @@
prot = static_protections(prot, address);
if (level == PG_LEVEL_4K) {
+ WARN_ON_ONCE(pgprot_val(prot) & _PAGE_PSE);
set_pte_atomic(kpte, pfn_pte(pfn, canon_pgprot(prot)));
} else {
+ /* Clear the PSE bit for the 4k level pages ! */
+ pgprot_val(prot) = pgprot_val(prot) & ~_PAGE_PSE;
+
err = split_large_page(kpte, address);
if (!err)
goto repeat;