x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP

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>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220204185742.271030-2-song@kernel.org

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 6fddb63271d9e32d4c457f6c7ed2b6589bbc6ac2..e0e0d00cf103a4b8849bd5e4edb6dbe4e2ee4766 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -159,6 +159,7 @@ 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