Re: [RFC PATCH 4/6] pkeys: Lift pkey hardware check for pkey_alloc()

diff --git a/mm/mprotect.c b/mm/mprotect.c index ba5592655ee3..56d35de33725 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -773,6 +773,9 @@ SYSCALL_DEFINE2(pkey_alloc, unsigned long, flags, unsigned long, init_val) int pkey; int ret;

• if (!arch_pkeys_enabled())

• return -ENOSPC;
  

See comments in patch 3/6. Since we are modifying (fixing) old behavior, should we just return ENOSYS to make this consistent?

Sohil

/* No flags supported yet. */ if (flags) return -EINVAL;