From: Changbin Du <changbin.du@gmail.com>
To: yamada.masahiro@socionext.com, michal.lkml@markovi.net,
tglx@linutronix.de, mingo@redhat.com, linux@armlinux.org.uk,
akpm@linux-foundation.org, gregkh@linuxfoundation.org
Cc: rostedt@goodmis.org, x86@kernel.org,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sparse@vger.kernel.org, robin.murphy@arm.com,
Changbin Du <changbin.du@gmail.com>
Subject: [PATCH v3 1/4] x86/mm: declare check_la57_support() as inline
Date: Sun, 28 Oct 2018 13:09:42 +0000 [thread overview]
Message-ID: <20181028130945.23581-2-changbin.du@gmail.com> (raw)
In-Reply-To: <20181028130945.23581-1-changbin.du@gmail.com>
The level4_kernel_pgt is only defined when X86_5LEVEL is enabled.
So declare check_la57_support() as inline to make sure the code
referring to level4_kernel_pgt is optimized out. This is a preparation
for CONFIG_CC_OPTIMIZE_FOR_DEBUGGING.
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
---
arch/x86/kernel/head64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 5dc377dc9d7b..5ae682f2aa83 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -98,7 +98,7 @@ static bool __head check_la57_support(unsigned long physaddr)
return true;
}
#else
-static bool __head check_la57_support(unsigned long physaddr)
+static inline bool __head check_la57_support(unsigned long physaddr)
{
return false;
}
--
2.17.1
next prev parent reply other threads:[~2018-10-28 13:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-28 13:09 [PATCH v3 0/4] kernel hacking: GCC optimization for better debug experience (-Og) Changbin Du
2018-10-28 13:09 ` Changbin Du [this message]
2018-10-28 18:09 ` [PATCH v3 1/4] x86/mm: declare check_la57_support() as inline Steven Rostedt
2018-10-29 13:04 ` Masahiro Yamada
2018-11-02 11:27 ` Borislav Petkov
2018-11-09 16:27 ` Masahiro Yamada
2018-11-10 1:41 ` Changbin Du
2018-10-28 13:09 ` [PATCH v3 2/4] kernel hacking: new config NO_AUTO_INLINE to disable compiler auto-inline optimizations Changbin Du
2018-10-29 13:03 ` Masahiro Yamada
2018-10-28 13:09 ` [PATCH v3 3/4] ARM: mm: fix build error in fix_to_virt with CONFIG_CC_OPTIMIZE_FOR_DEBUGGING Changbin Du
2018-10-29 13:05 ` Masahiro Yamada
2018-10-28 13:09 ` [PATCH v3 4/4] kernel hacking: new config CC_OPTIMIZE_FOR_DEBUGGING to apply GCC -Og optimization Changbin Du
2018-10-29 13:16 ` Masahiro Yamada
2018-10-29 14:54 ` Changbin Du
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