Re: [PATCH v2 8/8] powerpc/bpf: Reallocate BPF registers to volatile registers when possible on PPC32

Le 07/01/2022 à 12:51, Naveen N. Rao a écrit : > Christophe Leroy wrote: >> When the BPF routine doesn't call any function, the non volatile >> registers can be reallocated to volatile registers in order to >> avoid having to save them/restore on the stack. >> >> Before this patch, the test #359

Re: [PATCH v2 8/8] powerpc/bpf: Reallocate BPF registers to volatile registers when possible on PPC32

Christophe Leroy wrote: When the BPF routine doesn't call any function, the non volatile registers can be reallocated to volatile registers in order to avoid having to save them/restore on the stack. Before this patch, the test #359 ADD default X is: 0: 7c 64 1b 78 mr r4,r3 4:

[PATCH v2 8/8] powerpc/bpf: Reallocate BPF registers to volatile registers when possible on PPC32

When the BPF routine doesn't call any function, the non volatile registers can be reallocated to volatile registers in order to avoid having to save them/restore on the stack. Before this patch, the test #359 ADD default X is: 0: 7c 64 1b 78 mr r4,r3 4: 38 60 00 00 li