From: Song Liu <song@kernel.org>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <ast@kernel.org>, <daniel@iogearbox.net>, <andrii@kernel.org>,
<kernel-team@fb.com>, <peterz@infradead.org>, <x86@kernel.org>,
Song Liu <songliubraving@fb.com>
Subject: [PATCH v5 bpf-next 1/7] x86/Kconfig: select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP
Date: Thu, 20 Jan 2022 11:12:59 -0800 [thread overview]
Message-ID: <20220120191306.1801459-2-song@kernel.org> (raw)
In-Reply-To: <20220120191306.1801459-1-song@kernel.org>
From: Song Liu <songliubraving@fb.com>
This enables module_alloc() to allocate huge page for 2MB+ requests.
To check the difference of this change, we need enable config
CONFIG_PTDUMP_DEBUGFS, and call module_alloc(2MB). Before the change,
/sys/kernel/debug/page_tables/kernel shows pte for this map. With the
change, /sys/kernel/debug/page_tables/ show pmd for thie map.
Signed-off-by: Song Liu <songliubraving@fb.com>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8910b09b5601..b5d1582ea848 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -158,6 +158,7 @@ config X86
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE
+ select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN if X86_64
--
2.30.2
next prev parent reply other threads:[~2022-01-20 19:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 19:12 [PATCH v5 bpf-next 0/7] bpf_prog_pack allocator Song Liu
2022-01-20 19:12 ` Song Liu [this message]
2022-01-20 19:13 ` [PATCH v5 bpf-next 2/7] bpf: use bytes instead of pages for bpf_jit_[charge|uncharge]_modmem Song Liu
2022-01-20 19:13 ` [PATCH v5 bpf-next 3/7] bpf: use size instead of pages in bpf_binary_header Song Liu
2022-01-20 19:13 ` [PATCH v5 bpf-next 4/7] bpf: add a pointer of bpf_binary_header to bpf_prog Song Liu
2022-01-20 19:13 ` [PATCH v5 bpf-next 5/7] x86/alternative: introduce text_poke_copy Song Liu
2022-01-21 9:52 ` Peter Zijlstra
2022-01-20 19:13 ` [PATCH v5 bpf-next 6/7] bpf: introduce bpf_prog_pack allocator Song Liu
2022-01-20 19:13 ` [PATCH v5 bpf-next 7/7] bpf, x86_64: use " Song Liu
2022-01-21 4:59 ` Alexei Starovoitov
2022-01-21 17:53 ` Song Liu
2022-01-21 18:29 ` Alexei Starovoitov
2022-01-21 18:56 ` Song Liu
2022-01-21 1:06 ` [PATCH v5 bpf-next 0/7] " Song Liu
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