On Thu, 2020-09-17 at 09:27 -0400, Qian Cai wrote:
On Wed, 2020-09-16 at 10:35 +0300, Mike Rapoport wrote:
quoted
From: Mike Rapoport <redacted>
Hi,
This is an implementation of "secret" mappings backed by a file descriptor.
I've dropped the boot time reservation patch for now as it is not strictly
required for the basic usage and can be easily added later either with or
without CMA.
On powerpc: https://gitlab.com/cailca/linux-mm/-/blob/master/powerpc.config
There is a compiling warning from the today's linux-next:
<stdin>:1532:2: warning: #warning syscall memfd_secret not implemented [-Wcpp]
This should silence the warning:
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index a18b47695f55..b7609958ee36 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -40,6 +40,10 @@ cat << EOF
#define __IGNORE_setrlimit /* setrlimit */
#endif
+#ifndef __ARCH_WANT_MEMFD_SECRET
+#define __IGNORE_memfd_secret
+#endif
+
/* Missing flags argument */
#define __IGNORE_renameat /* renameat2 */