From: Song Liu <song@kernel.org>
To: <linux-mm@kvack.org>, <bpf@vger.kernel.org>,
<netdev@vger.kernel.org>, <x86@kernel.org>
Cc: <ast@kernel.org>, <daniel@iogearbox.net>, <andrii@kernel.org>,
<kernel-team@fb.com>, <akpm@linux-foundation.org>,
<pmenzel@molgen.mpg.de>, <rick.p.edgecombe@intel.com>,
Song Liu <song@kernel.org>
Subject: [PATCH bpf 0/4] introduce HAVE_ARCH_HUGE_VMALLOC_FLAG for bpf_prog_pack
Date: Wed, 30 Mar 2022 15:56:38 -0700 [thread overview]
Message-ID: <20220330225642.1163897-1-song@kernel.org> (raw)
We prematurely enabled HAVE_ARCH_HUGE_VMALLOC for x86_64, which could cause
issues [1], [2]. Fix this by with HAVE_ARCH_HUGE_VMALLOC_FLAG, which allows
user of __vmalloc_node_range to ask for huge pages with a new flag
VM_TRY_HUGE_VMAP. bpf_prog_pack is updated to use this __vmalloc_node_range
with VM_TRY_HUGE_VMAP.
[1] https://lore.kernel.org/lkml/5bd16e2c06a2df357400556c6ae01bb5d3c5c32a.camel@intel.com/
[2] https://lore.kernel.org/netdev/14444103-d51b-0fb3-ee63-c3f182f0b546@molgen.mpg.de/
Song Liu (4):
x86: disable HAVE_ARCH_HUGE_VMALLOC
vmalloc: introduce HAVE_ARCH_HUGE_VMALLOC_FLAG
x86: select HAVE_ARCH_HUGE_VMALLOC_FLAG for X86_64
bpf: use __vmalloc_node_range() with VM_TRY_HUGE_VMAP for
bpf_prog_pack
arch/Kconfig | 9 +++++++++
arch/x86/Kconfig | 2 +-
include/linux/vmalloc.h | 9 +++++++--
kernel/bpf/core.c | 21 ++++++++++++++++++---
mm/vmalloc.c | 28 +++++++++++++++++++---------
5 files changed, 54 insertions(+), 15 deletions(-)
--
2.30.2
next reply other threads:[~2022-03-30 23:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-30 22:56 Song Liu [this message]
2022-03-30 22:56 ` [PATCH bpf 1/4] x86: disable HAVE_ARCH_HUGE_VMALLOC Song Liu
2022-03-30 23:47 ` Thomas Gleixner
2022-03-30 22:56 ` [PATCH bpf 2/4] vmalloc: introduce HAVE_ARCH_HUGE_VMALLOC_FLAG Song Liu
2022-03-30 23:40 ` Edgecombe, Rick P
2022-03-31 0:26 ` Song Liu
2022-03-30 22:56 ` [PATCH bpf 3/4] x86: select HAVE_ARCH_HUGE_VMALLOC_FLAG for X86_64 Song Liu
2022-03-30 23:54 ` Thomas Gleixner
2022-03-31 0:30 ` Song Liu
2022-03-30 22:56 ` [PATCH bpf 4/4] bpf: use __vmalloc_node_range() with VM_TRY_HUGE_VMAP for bpf_prog_pack Song Liu
2022-03-31 0:00 ` Thomas Gleixner
2022-03-31 0:31 ` Song Liu
2022-03-31 0:04 ` [PATCH bpf 0/4] introduce HAVE_ARCH_HUGE_VMALLOC_FLAG " Edgecombe, Rick P
2022-03-31 0:46 ` Song Liu
2022-03-31 16:19 ` Edgecombe, Rick P
2022-03-31 5:37 ` Christoph Hellwig
2022-03-31 23:59 ` Song Liu
2022-04-01 22:22 ` Song Liu
2022-04-05 7:07 ` Christoph Hellwig
2022-04-05 23:54 ` Song Liu
2022-04-07 19:57 ` Song Liu
2022-04-08 10:08 ` Claudio Imbrenda
2022-04-08 21:22 ` Song Liu
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