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powerpc/security: Show powerpc_security_features in debugfs 

This can be helpful for debugging problems with the security feature
flags, especially on guests where the flags come from the hypervisor
via an hcall and so can't be observed in the device tree.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.2
Michael Ellerman 2019-04-09 23:14:20 +10:00
parent 453d87f6a8
commit 398af57112
1 changed files with 8 additions and 0 deletions
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8
arch/powerpc/kernel/security.c
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@ -104,6 +104,14 @@ static __init int barrier_nospec_debugfs_init(void)
return 0;
}
device_initcall(barrier_nospec_debugfs_init);
static __init int security_feature_debugfs_init(void)
{
debugfs_create_x64("security_features", 0400, powerpc_debugfs_root,
(u64 *)&powerpc_security_features);
return 0;
}
device_initcall(security_feature_debugfs_init);
#endif /* CONFIG_DEBUG_FS */
#ifdef CONFIG_PPC_FSL_BOOK3E