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From 798456424d4941bed5e19e4ee3c712c7bc3766dd Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Wed, 13 Jun 2018 10:40:26 +0200
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Subject: [PATCH 4/9] Use 4 MB vram for cirrus.
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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: <20180613104026.4395-3-kraxel@redhat.com>
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Patchwork-id: 80652
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 2/2] Use 4 MB vram for cirrus.
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Bugzilla: 1542080
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Daniel P. Berrange <berrange@redhat.com>
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Follow upstream, which switched from 8 MB to 4 MB in release 2.9,
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see commit 73c148130b58709f0f2abfedbae92681d87eb404.
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RHEL traditionally defaults to 16 MB video memory, so we had a patch
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changing 8 MB -> 16 MB downstream. The 2.9 rebase kept that patch, now
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changing 4 MB -> 16 MB.
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This patch effectively reverts the downstream change and adds a compat
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property so the video memory will stay at 16 MB for 7.5 and older
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machine types.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/display/cirrus_vga.c | 2 +-
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include/hw/compat.h | 4 ++++
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2 files changed, 5 insertions(+), 1 deletion(-)
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diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
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index feacb45..014268a 100644
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--- a/hw/display/cirrus_vga.c
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+++ b/hw/display/cirrus_vga.c
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@@ -3133,7 +3133,7 @@ static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
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static Property pci_vga_cirrus_properties[] = {
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DEFINE_PROP_UINT32("vgamem_mb", struct PCICirrusVGAState,
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- cirrus_vga.vga.vram_size_mb, 16),
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+ cirrus_vga.vga.vram_size_mb, 4),
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DEFINE_PROP_BOOL("blitter", struct PCICirrusVGAState,
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cirrus_vga.enable_blitter, true),
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DEFINE_PROP_END_OF_LIST(),
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diff --git a/include/hw/compat.h b/include/hw/compat.h
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index 666eed9..9e659e9 100644
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--- a/include/hw/compat.h
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+++ b/include/hw/compat.h
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@@ -476,6 +476,10 @@
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.driver = "virtio-tablet-device",\
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.property = "wheel-axis",\
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.value = "false",\
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+ },{ /* HW_COMPAT_RHEL7_5 */ \
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+ .driver = "cirrus-vga",\
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+ .property = "vgamem_mb",\
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+ .value = "16",\
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},
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#endif /* HW_COMPAT_H */
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--
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1.8.3.1
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