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Date: Thu, 25 Apr 2019 20:17:42 +0200
From: Peter Zijlstra <>
To: Rick Edgecombe <>
Cc: Borislav Petkov <>, Andy Lutomirski <>,
	Ingo Molnar <>,,,, Thomas Gleixner <>,
	Nadav Amit <>,
	Dave Hansen <>,,,,,,,,,,,
	Nadav Amit <>
Subject: Re: [PATCH v4 04/23] x86/mm: Save DRs when loading a temporary mm

On Mon, Apr 22, 2019 at 11:57:46AM -0700, Rick Edgecombe wrote:
> From: Nadav Amit <>
> Prevent user watchpoints from mistakenly firing while the temporary mm
> is being used. As the addresses that of the temporary mm might overlap
> those of the user-process, this is necessary to prevent wrong signals
> or worse things from happening.

Ooh, goody, that would be fun indeed.

> Cc: Andy Lutomirski <>

Acked-by: Peter Zijlstra (Intel) <>

> Signed-off-by: Nadav Amit <>
> Signed-off-by: Rick Edgecombe <>

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