From: Konstantin Khorenko <khorenko@virtuozzo.com>
To: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>,
Pavel Tikhomirov <ptikhomirov@virtuozzo.com>,
Vasileios Almpanis <vasileios.almpanis@virtuozzo.com>,
Konstantin Khorenko <khorenko@virtuozzo.com>
Cc: devel@openvz.org
Subject: Re: [Devel] [PATCH hci-8.1 v2 0/2] mm: allow MADV_DOEXEC on VFIO BAR mappings
Date: Wed, 04 Nov 2026 20:21:52 +0100 [thread overview]
Message-ID: <179382011290.2760255.357492986463241507.b4-ty@b4> (raw)
In-Reply-To: <20261016-b4-prep-khorenko-vstor-103860-4-doexec-vfio-bars-v2-0-2237f8fbb38e@virtuozzo.com>
On Fri, 16 Oct 2026 23:35:38 +0200, Konstantin Khorenko wrote:
> mm: allow MADV_DOEXEC on VFIO BAR mappings
>
> VSTOR-103860: keep the VFIO BAR mappings of a QEMU process across a
> live-update exec, so the device keeps its MMIO mappings without a
> re-mmap. Applies on top of "mm, exec: fix the MADV_DOEXEC code we carry
> from Oracle" and needs patch 1 of "mm, binfmt_elf: two fixes also posted
> to mainline" (the copy_huge_pmd() recheck), because every live-update
> exec now copies the BAR's huge PMDs. The latter is posted as
> http://lore.virtuozzo.com/20261014-b4-prep-khorenko-vstor-149847-1-upstream-fixes-v1-0-7fde9ffbebe9@virtuozzo.com
>
> [...]
Applied to branch-rh10-6.12.0-211.52.1.22.x.vz10-ovz, will be released in rh10-6.12.0-211.52.1.22.18.vz10, thanks!
[1/2] mm: allow MADV_DOEXEC on shared PFN mappings of device memory
https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/ba11691580f3
[2/2] selftests/mm: check MADV_DOEXEC on VFIO BARs and other PFN mappings
https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/31ad25004a57
--
Konstantin Khorenko,
Virtuozzo Linux Kernel Team
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prev parent reply other threads:[~2026-11-04 19:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 21:35 Konstantin Khorenko
2026-10-16 21:35 ` [Devel] [PATCH hci-8.1 v2 1/2] mm: allow MADV_DOEXEC on shared PFN mappings of device memory Konstantin Khorenko
2026-10-16 21:35 ` [Devel] [PATCH hci-8.1 v2 2/2] selftests/mm: check MADV_DOEXEC on VFIO BARs and other PFN mappings Konstantin Khorenko
2026-11-04 19:21 ` Konstantin Khorenko [this message]
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