Re: [PATCH bpf-next 5/6] bpf, arm32: Always zero extend for LDX with B/H/W

On Tue, Sep 12, 2023 at 4:17 PM Puranjay Mohan wrote: > > On Wed, Sep 13, 2023 at 1:04 AM Russell King (Oracle) > wrote: > > > > On Tue, Sep 12, 2023 at 10:46:53PM +, Puranjay Mohan wrote: > > > The JITs should not depend on the verifier for zero extending the upper > > > 32 bits of the

Re: [PATCH bpf-next 5/6] bpf, arm32: Always zero extend for LDX with B/H/W

On Wed, Sep 13, 2023 at 1:04 AM Russell King (Oracle) wrote: > > On Tue, Sep 12, 2023 at 10:46:53PM +, Puranjay Mohan wrote: > > The JITs should not depend on the verifier for zero extending the upper > > 32 bits of the destination register when loading a byte, half-word, or > > word. > > > >

Re: [PATCH bpf-next 5/6] bpf, arm32: Always zero extend for LDX with B/H/W

On Tue, Sep 12, 2023 at 10:46:53PM +, Puranjay Mohan wrote: > The JITs should not depend on the verifier for zero extending the upper > 32 bits of the destination register when loading a byte, half-word, or > word. > > A following patch will make the verifier stop patching zext instructions >

[PATCH bpf-next 5/6] bpf, arm32: Always zero extend for LDX with B/H/W

The JITs should not depend on the verifier for zero extending the upper 32 bits of the destination register when loading a byte, half-word, or word. A following patch will make the verifier stop patching zext instructions after LDX. Signed-off-by: Puranjay Mohan --- arch/arm/net/bpf_jit_32.c |