From: ebiederm@xmission.com (Eric W. Biederman)
To: Andi Kleen <ak@suse.de>
Cc: Magnus Damm <magnus@valinux.co.jp>,
fastboot@lists.osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86_64: Reload CS when startup_64 is used.
Date: Tue, 22 Aug 2006 03:20:54 -0600 [thread overview]
Message-ID: <m1psetqg7d.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <20060822110106.7582fcb9.ak@suse.de> (Andi Kleen's message of "Tue, 22 Aug 2006 11:01:06 +0200")
Andi Kleen <ak@suse.de> writes:
> On Tue, 22 Aug 2006 02:37:44 -0600
> ebiederm@xmission.com (Eric W. Biederman) wrote:
>
>>
>> In long mode the %cs is largely a relic. However there are a few cases
>> like lret
>
> You mean iret?
Yes, sorry.
>
>> + * jump. In addition we need to ensure %cs is set so we make this
>> + * a far return.
>> */
>> movq initial_code(%rip),%rax
>> - jmp *%rax
>> + pushq $__KERNEL_CS
>> + pushq %rax
>> + lretq
>
> Ok merged thanks
>
> -Andi
prev parent reply other threads:[~2006-08-22 9:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-21 9:54 [PATCH][RFC] " Magnus Damm
2006-08-21 10:19 ` Andi Kleen
2006-08-21 13:29 ` [Fastboot] " Magnus Damm
2006-08-21 14:16 ` Andi Kleen
2006-08-22 0:47 ` Magnus Damm
2006-08-21 14:17 ` Vivek Goyal
2006-08-21 14:24 ` Andi Kleen
2006-08-21 14:46 ` Vivek Goyal
2006-08-21 15:04 ` Andi Kleen
2006-08-21 20:02 ` Eric W. Biederman
2006-08-21 20:10 ` Andi Kleen
2006-08-21 21:00 ` Eric W. Biederman
2006-08-21 21:02 ` Eric W. Biederman
2006-08-22 0:58 ` Magnus Damm
2006-08-22 3:41 ` Eric W. Biederman
2006-08-22 4:10 ` Magnus Damm
2006-08-22 8:03 ` Andi Kleen
2006-08-22 8:37 ` [PATCH] " Eric W. Biederman
2006-08-22 8:53 ` [Fastboot] " Magnus Damm
2006-08-22 9:25 ` Eric W. Biederman
2006-08-23 3:10 ` Magnus Damm
2006-08-22 9:01 ` Andi Kleen
2006-08-22 9:20 ` Eric W. Biederman [this message]
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