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SubjectRe: [RFC 10/10] x86/enter: Use IBRS on syscall and interrupts
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On 01/21/2018 05:50 AM, Konrad Rzeszutek Wilk wrote:
> On Sat, Jan 20, 2018 at 08:23:01PM +0100, KarimAllah Ahmed wrote:
>> From: Tim Chen <tim.c.chen@linux.intel.com>
>>
>> Stop Indirect Branch Speculation on every user space to kernel space
>> transition and reenable it when returning to user space./
>
> How about interrupts?

This code covers all kernel entry/exit paths, including interrupts.
Despite its name, "error_entry" is used by the interrupt path.

> That is should .macro interrupt have the same treatment?

It already does.

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