From: Gerd Hoffmann <kraxel@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>, qemu-devel@nongnu.org, mst@redhat.com
Subject: Re: [Qemu-devel] [PATCH 6/6] [wip] tseg, part2, not (yet) tested
Date: Tue, 21 Apr 2015 17:12:00 +0200 [thread overview]
Message-ID: <1429629120.21164.29.camel@nilsson.home.kraxel.org> (raw)
In-Reply-To: <553660EC.4040902@redhat.com>
Hi,
> > I'm thinking, the last 1 / 2 / 8 megabytes should behave as RAM in all
> > of the following cases:
> > - no SMRAM programmed (tseg size = 0)
> > - SMRAM programmed (tseg size > 0), and it is open
> > - SMRAM programmed (tseg size > 0) and closed, but CPU in SMM
>
> Correct.
Almost. I think the smram open bit doesn't affect tseg at all. As tseg
doesn't have the funky overlay properties with the vga window you can
simply initialize tseg memory outside smm mode without any special
tricks, you just need to do it before flipping the tseg enable bit.
cheers,
Gerd
next prev parent reply other threads:[~2015-04-21 15:12 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-20 9:19 [Qemu-devel] [PATCH 1/6] [fixup] add ESMRAMC default Gerd Hoffmann
2015-04-20 9:19 ` [Qemu-devel] [PATCH 2/6] add SMRAM+ESMRAMC wmask Gerd Hoffmann
2015-04-20 12:05 ` Michael S. Tsirkin
2015-04-20 9:19 ` [Qemu-devel] [PATCH 3/6] q35: implement SMRAM.D_LCK Gerd Hoffmann
2015-04-20 12:06 ` Michael S. Tsirkin
2015-04-20 9:19 ` [Qemu-devel] [PATCH 4/6] q35: add test for SMRAM.D_LCK Gerd Hoffmann
2015-04-20 12:06 ` Michael S. Tsirkin
2015-04-20 9:19 ` [Qemu-devel] [PATCH 5/6] [wip] tseg, part1, not (yet) tested Gerd Hoffmann
2015-04-20 11:45 ` Paolo Bonzini
2015-04-21 14:18 ` Laszlo Ersek
2015-04-21 15:04 ` Gerd Hoffmann
2015-04-21 15:08 ` Paolo Bonzini
2015-04-21 15:16 ` Gerd Hoffmann
2015-04-21 18:46 ` Laszlo Ersek
2015-04-22 6:07 ` Gerd Hoffmann
2015-04-22 8:09 ` Gerd Hoffmann
2015-04-22 8:52 ` Laszlo Ersek
2015-04-22 9:33 ` Gerd Hoffmann
2015-04-22 21:41 ` Laszlo Ersek
2015-04-22 21:51 ` Laszlo Ersek
2015-04-23 7:02 ` Gerd Hoffmann
2015-04-23 7:41 ` Laszlo Ersek
2015-04-23 8:33 ` Laszlo Ersek
2015-04-23 8:34 ` Gerd Hoffmann
2015-04-23 8:42 ` Laszlo Ersek
2015-04-23 10:27 ` Paolo Bonzini
2015-04-20 9:19 ` [Qemu-devel] [PATCH 6/6] [wip] tseg, part2, " Gerd Hoffmann
2015-04-21 14:30 ` Laszlo Ersek
2015-04-21 14:38 ` Paolo Bonzini
2015-04-21 15:05 ` Laszlo Ersek
2015-04-21 15:14 ` Gerd Hoffmann
2015-04-21 15:21 ` Paolo Bonzini
2015-04-21 20:31 ` [Qemu-devel] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() (was: [PATCH 6/6] [wip] tseg, part2, not (yet) tested) Laszlo Ersek
2015-04-21 20:58 ` [Qemu-devel] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() Paolo Bonzini
2015-04-24 11:56 ` [Qemu-devel] [edk2] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() (was: [PATCH 6/6] [wip] tseg, part2, not (yet) tested) Yao, Jiewen
2015-04-24 13:00 ` [Qemu-devel] [edk2] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() Paolo Bonzini
2015-04-24 13:16 ` Yao, Jiewen
2015-04-24 14:50 ` [Qemu-devel] [edk2] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() (was: [PATCH 6/6] [wip] tseg, part2, not (yet) tested) Yao, Jiewen
2015-04-24 16:46 ` [Qemu-devel] [edk2] implementing EFI_SMM_CONTROL2_PROTOCOL.Trigger() Laszlo Ersek
2015-04-21 15:12 ` Gerd Hoffmann [this message]
2015-04-20 12:07 ` [Qemu-devel] [PATCH 1/6] [fixup] add ESMRAMC default Michael S. Tsirkin
2015-04-20 12:27 ` Paolo Bonzini
2015-04-20 13:23 ` Gerd Hoffmann
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