Re: [PATCH] x86_64: Reload CS when startup_64 is used.
From: Andi Kleen
Date: Tue Aug 22 2006 - 04:58:32 EST
On Tue, 22 Aug 2006 02:37:44 -0600
ebiederm@xxxxxxxxxxxx (Eric W. Biederman) wrote:
> In long mode the %cs is largely a relic. However there are a few cases
> like lret
You mean iret?
> + * 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
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