linux-kernel - Re: [PATCH 1/1] X86: mshyperv.c: Fix a compilation issue.

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]

Date:	Thu, 6 Aug 2015 14:10:45 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	vkuznets@...hat.com, sfr@...b.auug.org.au, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org,
	haiyangz@...rosoft.com
Subject: Re: [PATCH 1/1] X86: mshyperv.c: Fix a compilation issue.

On Thu, Aug 06, 2015 at 02:41:24PM -0700, K. Y. Srinivasan wrote:
> Building with a random configuration file, this build failure
> was reported:
> 
> arch/x86/built-in.o: In function `hv_machine_crash_shutdown':
> arch/x86/kernel/cpu/mshyperv.c:112: undefined
> reference to `native_machine_crash_shutdown'
> 
> This patch fixes the problem
> 
> Reported-by: Jim Davis <jim.epost@...il.com>
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> ---
>  arch/x86/kernel/cpu/mshyperv.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
> index f794bfa..0faed5e0 100644
> --- a/arch/x86/kernel/cpu/mshyperv.c
> +++ b/arch/x86/kernel/cpu/mshyperv.c
> @@ -109,7 +109,9 @@ static void hv_machine_crash_shutdown(struct pt_regs *regs)
>  {
>  	if (hv_crash_handler)
>  		hv_crash_handler(regs);
> +#ifdef CONFIG_KEXEC_CORE
>  	native_machine_crash_shutdown(regs);
> +#endif

Why is kexec the factor here?  And if it really does, can't it just be
CONFIG_KEXEC, or, can kexec provide a "dummy" inline function so that
you don't have to have a #ifdef in a .c file?

thanks,

greg k-h
--
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/