Re: [PATCH bpf-next v2 1/2] bpf: use kvmalloc for map values in syscall
From: Song Liu <song@kernel.org>
Date: 2021-08-17 16:19:43
Also in:
bpf
On Tue, Aug 17, 2021 at 8:46 AM Stanislav Fomichev [off-list ref] wrote:
Use kvmalloc/kvfree for temporary value when manipulating a map via syscall. kmalloc might not be sufficient for percpu maps where the value is big (and further multiplied by hundreds of CPUs). Can be reproduced with netcnt test on qemu with "-smp 255". Signed-off-by: Stanislav Fomichev <redacted>
Acked-by: Song Liu <redacted>