A set of fixes and updates to powerpc BPF JIT:
- Patches 1-3 fix issues with the existing powerpc JIT and are tagged
for -stable.
- Patch 4 fixes a build issue with bpf selftests on powerpc.
- Patches 5-9 handle some corner cases and make some small improvements.
- Patches 10-13 optimize how function calls are handled in ppc64.
Patches 7 and 8 were previously posted, and while patch 7 has no
changes, patch 8 has been reworked to handle BPF_EXIT differently.
- Naveen
Naveen N. Rao (13):
bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()
powerpc32/bpf: Fix codegen for bpf-to-bpf calls
powerpc/bpf: Update ldimm64 instructions during extra pass
tools/bpf: Rename 'struct event' to avoid naming conflict
powerpc/bpf: Skip branch range validation during first pass
powerpc/bpf: Emit a single branch instruction for known short branch
ranges
powerpc/bpf: Handle large branch ranges with BPF_EXIT
powerpc64/bpf: Limit 'ldbrx' to processors compliant with ISA v2.06
powerpc64/bpf: Do not save/restore LR on each call to
bpf_stf_barrier()
powerpc64/bpf: Use r12 for constant blinding
powerpc64/bpf elfv2: Setup kernel TOC in r2 on entry
powerpc64/bpf elfv1: Do not load TOC before calling functions
powerpc64/bpf: Optimize instruction sequence used for function calls
arch/powerpc/include/asm/ppc-opcode.h | 1 +
arch/powerpc/net/bpf_jit.h | 8 +-
arch/powerpc/net/bpf_jit64.h | 2 +-
arch/powerpc/net/bpf_jit_comp.c | 55 ++++++++++--
arch/powerpc/net/bpf_jit_comp32.c | 32 +++++--
arch/powerpc/net/bpf_jit_comp64.c | 124 ++++++++++++++------------
kernel/bpf/stackmap.c | 5 +-
tools/bpf/runqslower/runqslower.bpf.c | 2 +-
tools/bpf/runqslower/runqslower.c | 2 +-
tools/bpf/runqslower/runqslower.h | 2 +-
10 files changed, 153 insertions(+), 80 deletions(-)
base-commit: bdcf18e133f656b2c97390a594fc95e37849e682
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2.34.1
