From: "Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [PATCH 2/2] vapic: confine the VAPIC region to 0xc0000..0xe0000
Date: Wed, 26 Aug 2026 20:58:15 +0200 [thread overview]
Message-ID: <b122a57e-7907-48f6-b00a-5eeff6961b27@oss.qualcomm.com> (raw)
In-Reply-To: <20260826181552.848617-3-pbonzini@redhat.com>
On 26/8/26 20:15, Paolo Bonzini wrote:
> The VAPIC region is mapped as writable RAM, at very high priority,
> above existing memory. If the guest is allowed to map it everywhere,
> it can overlap PCI BARs or even SMRAM. Ensure that the whole
> region first in the 128K of low memory that are reserved to
> option ROMs.
>
> Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/4206
> Reported-by: Artem Dinaburg <https://gitlab.com/artem35>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> hw/i386/vapic.c | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
prev parent reply other threads:[~2026-08-26 18:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-26 18:15 [PATCH 0/2] vapic: confine the VAPIC region to 0xc0000..0xe0000 Paolo Bonzini
2026-08-26 18:15 ` [PATCH 1/2] i386/vapic: unref MemoryRegion if vapic_map_rom_writable fails Paolo Bonzini
2026-08-27 9:05 ` Philippe Mathieu-Daudé
2026-08-26 18:15 ` [PATCH 2/2] vapic: confine the VAPIC region to 0xc0000..0xe0000 Paolo Bonzini
2026-08-26 18:58 ` Philippe Mathieu-Daudé [this message]
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