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Re: [Qemu-devel] [PATCH v7 41/42] Disable mlock around incoming postcopy
From: |
Amit Shah |
Subject: |
Re: [Qemu-devel] [PATCH v7 41/42] Disable mlock around incoming postcopy |
Date: |
Tue, 28 Jul 2015 11:32:32 +0530 |
On (Tue) 16 Jun 2015 [11:26:54], Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
>
> Userfault doesn't work with mlock; mlock is designed to nail down pages
> so they don't move, userfault is designed to tell you when they're not
> there.
>
> munlock the pages we userfault protect before postcopy.
> mlock everything again at the end if mlock is enabled.
>
> Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> Reviewed-by: David Gibson <address@hidden>
Reviewed-by: Amit Shah <address@hidden>
Amit