From: "Alexei Starovoitov" <alexei.starovoitov@gmail.com>
To: "Tejun Heo" <tj@kernel.org>, "David Vernet" <void@manifault.com>,
"Andrea Righi" <arighi@nvidia.com>,
"Changwoo Min" <changwoo@igalia.com>,
"Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Kumar Kartikeya Dwivedi" <memxor@gmail.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Thomas Gleixner" <tglx@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"David Hildenbrand" <david@kernel.org>,
"Mike Rapoport" <rppt@kernel.org>,
"Emil Tsalapatis" <emil@etsalapatis.com>,
<sched-ext@lists.linux.dev>, <bpf@vger.kernel.org>,
<x86@kernel.org>, <linux-arm-kernel@lists.infradead.org>,
<linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/8] bpf: Recover arena kernel faults with scratch page
Date: Thu, 21 May 2026 02:42:50 -0700 [thread overview]
Message-ID: <DIO99FYEHNC1.23KFEHRPTRB5N@gmail.com> (raw)
In-Reply-To: <20260520235052.4180316-3-tj@kernel.org>
On Wed May 20, 2026 at 4:50 PM PDT, Tejun Heo wrote:
>
> v2: Use ptep_get_and_clear() in apply_range_clear_cb(). (David)
>
> Suggested-by: Alexei Starovoitov <ast@kernel.org>
> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Cc: David Hildenbrand <david@kernel.org>
> ---
> Documentation/bpf/kfuncs.rst | 14 +++
> arch/arm64/mm/fault.c | 10 +-
> arch/x86/mm/fault.c | 12 ++-
> include/linux/bpf.h | 1 +
> include/linux/bpf_defs.h | 11 +++
> kernel/bpf/arena.c | 177 +++++++++++++++++++++++++++--------
> kernel/bpf/core.c | 5 +
> 7 files changed, 183 insertions(+), 47 deletions(-)
> create mode 100644 include/linux/bpf_defs.h
First 5 patches lgtm. Should we create a stable branch out of them
and pull into bpf-next and sched-ext trees?
I'm preparing a followup for slab-over-arena on top of these changes.
next prev parent reply other threads:[~2026-05-21 9:42 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 23:50 [PATCHSET v3 sched_ext/for-7.2] bpf/arena: Direct kernel-side access Tejun Heo
2026-05-20 23:50 ` [PATCH 1/8] mm: Add ptep_try_set() for lockless empty-slot installs Tejun Heo
2026-05-21 7:00 ` Andrea Righi
2026-05-21 17:37 ` [PATCH v3 " Tejun Heo
2026-05-20 23:50 ` [PATCH 2/8] bpf: Recover arena kernel faults with scratch page Tejun Heo
2026-05-21 3:16 ` Emil Tsalapatis
2026-05-21 9:42 ` Alexei Starovoitov [this message]
2026-05-21 17:39 ` Tejun Heo
2026-05-20 23:50 ` [PATCH 3/8] bpf: Add sleepable variant of bpf_arena_alloc_pages for kernel callers Tejun Heo
2026-05-21 3:17 ` Emil Tsalapatis
2026-05-20 23:50 ` [PATCH 4/8] bpf: Add bpf_struct_ops_for_each_prog() Tejun Heo
2026-05-21 4:07 ` Emil Tsalapatis
2026-05-20 23:50 ` [PATCH 5/8] bpf/arena: Add bpf_arena_map_kern_vm_start() and bpf_prog_arena() Tejun Heo
2026-05-21 4:08 ` Emil Tsalapatis
2026-05-20 23:50 ` [PATCH 6/8] sched_ext: Require an arena for cid-form schedulers Tejun Heo
2026-05-21 4:15 ` Emil Tsalapatis
2026-05-20 23:50 ` [PATCH 7/8] sched_ext: Sub-allocator over kernel-claimed BPF arena pages Tejun Heo
2026-05-21 7:56 ` Andrea Righi
2026-05-21 17:22 ` Tejun Heo
2026-05-21 17:37 ` [PATCH v2 " Tejun Heo
2026-05-21 17:54 ` Andrea Righi
2026-05-20 23:50 ` [PATCH 8/8] sched_ext: Convert ops.set_cmask() to arena-resident cmask Tejun Heo
2026-05-21 4:19 ` Emil Tsalapatis
2026-05-22 1:59 ` [PATCH v3 2/8] bpf: Recover arena kernel faults with scratch page Tejun Heo
-- strict thread matches above, loose matches on Subject: below --
2026-05-22 17:22 [PATCHSET v4 sched_ext/for-7.2] bpf/arena: Direct kernel-side access Tejun Heo
2026-05-22 17:22 ` [PATCH 2/8] bpf: Recover arena kernel faults with scratch page Tejun Heo
2026-05-26 12:45 ` David Hildenbrand (Arm)
2026-05-28 21:30 ` Alexei Starovoitov
2026-05-29 18:12 ` Tejun Heo
2026-05-29 18:38 ` Alexei Starovoitov
2026-05-29 18:44 ` Tejun Heo
2026-05-31 17:47 ` Tejun Heo
2026-05-31 18:58 ` David Hildenbrand (Arm)
2026-06-01 0:16 ` Alexei Starovoitov
2026-05-17 21:12 [PATCHSET v2 sched_ext/for-7.2] bpf/arena: Direct kernel-side access Tejun Heo
2026-05-17 21:12 ` [PATCH 2/8] bpf: Recover arena kernel faults with scratch page Tejun Heo
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