linux-kernel - [PATCH] paravirt reorder functions to avoid unspecified behaviour

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <6388835f69fc4a69839a132636da7188@pinky>
Date:	Mon, 27 Nov 2006 04:21:14 +0000
From:	Andy Whitcroft <apw@...dowen.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, linux-kernel@...r.kernel.org
Subject: [PATCH] paravirt reorder functions to avoid unspecified behaviour

paravirt: reorder functions to avoid unspecified behaviour

The paravirt ops introduce a 'weak' attribute onto memory_setup().
Code ordering leads to the following warnings on x86:

    arch/i386/kernel/setup.c:651: warning: weak declaration of
		`memory_setup' after first use results in unspecified behavior

Move memory_setup() to avoid this.

Signed-off-by: Andy Whitcroft <apw@...dowen.org>
---
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 8be04da..79df6e6 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -494,6 +494,12 @@ static void set_mca_bus(int x)
 static void set_mca_bus(int x) { }
 #endif
 
+/* Overridden in paravirt.c if CONFIG_PARAVIRT */
+char * __attribute__((weak)) memory_setup(void)
+{
+	return machine_specific_memory_setup();
+}
+
 /*
  * Determine if we were loaded by an EFI loader.  If so, then we have also been
  * passed the efi memmap, systab, etc., so we should use these data structures
@@ -646,12 +652,6 @@ void __init setup_arch(char **cmdline_p)
 	tsc_init();
 }
 
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __attribute__((weak)) memory_setup(void)
-{
-	return machine_specific_memory_setup();
-}
-
 static __init int add_pcspkr(void)
 {
 	struct platform_device *pd;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/