Naveen N. Rao b7540d6250 powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC ... Emit similar instruction sequences to commit a048a07d7f ("powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit") when encountering BPF_NOSPEC. Mitigations are enabled depending on what the firmware advertises. In particular, we do not gate these mitigations based on current settings, just like in x86. Due to this, we don't need to take any action if mitigations are enabled or disabled at runtime. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/956570cbc191cd41f8274bed48ee757a86dac62a.1633464148.git.naveen.n.rao@linux.vnet.ibm.com		2021-10-07 19:52:58 +11:00
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bpf_jit.h	powerpc/bpf: Validate branch ranges	2021-10-07 18:52:33 +11:00
bpf_jit64.h	powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC	2021-10-07 19:52:58 +11:00
bpf_jit_comp.c	powerpc/bpf: Validate branch ranges	2021-10-07 18:52:33 +11:00
bpf_jit_comp32.c	powerpc/bpf: Validate branch ranges	2021-10-07 18:52:33 +11:00
bpf_jit_comp64.c	powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC	2021-10-07 19:52:58 +11:00
Makefile	powerpc/bpf: Implement extended BPF on PPC32	2021-04-03 21:22:21 +11:00