linux-kernel - Re: [PATCH 3/3] x86,fpu: use disable_task_lazy_fpu

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:	Fri, 30 Jan 2015 13:46:47 -0800
From:	Dave Hansen <dave.hansen@...ux.intel.com>
To:	riel@...hat.com, oleg@...hat.com
CC:	sbsiddha@...il.com, luto@...capital.net, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, fenghua.yu@...el.com,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] x86,fpu: use disable_task_lazy_fpu_restore helper

On 01/30/2015 09:49 AM, riel@...hat.com wrote:
> @@ -440,8 +440,9 @@ static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct ta
>  					     new->thread.fpu_counter > 5);
>  	if (__thread_has_fpu(old)) {
>  		if (!__save_init_fpu(old))
> -			cpu = ~0;
> -		old->thread.fpu.last_cpu = cpu;
> +			task_disable_lazy_fpu_restore(old);
> +		else
> +			old->thread.fpu.last_cpu = cpu;

What is the 'else' doing here?  It seems a bit disconnected from the
other parts of the patch.
--
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/