x86/speculation/mds: Add mitigation control for MDS

[mirror_ubuntu-bionic-kernel.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index c1221332e128c7004e5cd60f5596f5b857c4950e..b0b47d10c33c60a29068ddfce25946b70f69e2f5 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -220,6 +220,15 @@ config DEFAULT_HOSTNAME
          but you may wish to use a different default here to make a minimal
          system more usable with less configuration.
 
+config VERSION_SIGNATURE
+       string "Arbitrary version signature"
+       help
+         This string will be created in a file, /proc/version_signature. It
+         is useful in determining arbitrary data about your kernel. For instance,
+         if you have several kernels of the same version, but need to keep track
+         of a revision of the same kernel, but not affect it's ability to load
+         compatible modules, this is the easiest way to do that.
+
 config SWAP
        bool "Support for paging of anonymous memory (swap)"
        depends on MMU && BLOCK
@@ -1397,6 +1406,13 @@ config BPF_SYSCALL
          Enable the bpf() system call that allows to manipulate eBPF
          programs and maps via file descriptors.
 
+config BPF_JIT_ALWAYS_ON
+       bool "Permanently enable BPF JIT and remove BPF interpreter"
+       depends on BPF_SYSCALL && HAVE_EBPF_JIT && BPF_JIT
+       help
+         Enables BPF JIT and removes BPF interpreter to avoid
+         speculative execution of BPF instructions by the interpreter
+
 config USERFAULTFD
        bool "Enable userfaultfd() system call"
        select ANON_INODES