From: Josh Poimboeuf <jpoimboe@redhat.com>
Date: Mon, 25 Apr 2022 16:40:02 -0700
Subject: x86/speculation: Add missing prototype for unpriv_ebpf_notify()
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Patch-mainline: v5.19-rc1
Git-commit: 2147c438fde135d6c145a96e373d9348e7076f7f
References: jsc#PED-1377

Fix the following warnings seen with "make W=1":

  kernel/sysctl.c:183:13: warning: no previous prototype for ‘unpriv_ebpf_notify’ [-Wmissing-prototypes]
    183 | void __weak unpriv_ebpf_notify(int new_state)
        |             ^~~~~~~~~~~~~~~~~~

  arch/x86/kernel/cpu/bugs.c:659:6: warning: no previous prototype for ‘unpriv_ebpf_notify’ [-Wmissing-prototypes]
    659 | void unpriv_ebpf_notify(int new_state)
        |      ^~~~~~~~~~~~~~~~~~

Fixes: 44a3918c8245 ("x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/5689d065f739602ececaee1e05e68b8644009608.1650930000.git.jpoimboe@redhat.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
 include/linux/bpf.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2086,6 +2086,8 @@ void bpf_offload_dev_netdev_unregister(s
 				       struct net_device *netdev);
 bool bpf_offload_dev_match(struct bpf_prog *prog, struct net_device *netdev);
 
+void unpriv_ebpf_notify(int new_state);
+
 #if defined(CONFIG_NET) && defined(CONFIG_BPF_SYSCALL)
 int bpf_prog_offload_init(struct bpf_prog *prog, union bpf_attr *attr);