Blame SOURCES/vga-Default-vram_size_mb-to-16-like-prior-versions-of-RHEL.patch

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From c712cf32b457f67d926b3d54c015371d6683099b Mon Sep 17 00:00:00 2001
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From: Miroslav Rezanina <mrezanin@redhat.com>
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Date: Wed, 31 Jul 2013 08:02:53 +0200
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Subject: vga: Default .vram_size_mb to 16, like prior versions of RHEL
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Message-id: <1375201922-6794-5-git-send-email-armbru@redhat.com>
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Patchwork-id: 52811
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O-Subject: [RHEL-7 PATCH v3 04/15] vga: Default .vram_size_mb to 16, like prior versions of RHEL
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Bugzilla: 983991
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Bandan Das <bsd@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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A brief history of VGA video RAM sizes:
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* Initially, all VGA devices got 8 MiB of video RAM.
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* Upstream qemu-kvm kvm-62 (2008) doubled it to 16 MiB (commit
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  a7fe029).
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* RHEL-5 and RHEL-6 based on upstream qemu-kvm.
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* Upstream qemu v1.2.0 made the size configurable for "isa-vga",
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  "VGA", "vmware_vga" (commit 4a1e244), and "qxl-vga", "qxl" (commit
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  13d1fd4), then doubled the default to 16 MiB (commit 9e56edc) for
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  the new machine type.  Except "isa-vga" stayed at 8 MiB.
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* Upstream qemu-kvm merged this in qemu-kvm-1.2.0.  Incompatible
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  change of default VGA video RAM back to 8 MiB for "isa-vga",
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  "isa-cirrus-vga", "cirrus-vga"[*].
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* Upstream qemu v1.3.0 made the size configurable for
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  "isa-cirrus-vga", "cirrus-vga" (commit 19403a6).
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RHEL-7 bases on upstream qemu.  To avoid qemu-kvm-1.2.0's incompatible
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change, default video RAM size to 16 MiB for all VGA devices[**] and
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RHEL machine types.
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[*] And the non-qdevified, memory-mapped VGA used by MIPS magnum and
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pica61 machines, but these don't matter in qemu-kvm.
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[**] Except for the non-qdevified, memory-mapped VGA.
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
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index 64bfe2b..fa8eae2 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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@@ -2924,7 +2924,7 @@ static int vga_initfn(ISADevice *dev)
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 static Property isa_cirrus_vga_properties[] = {
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     DEFINE_PROP_UINT32("vgamem_mb", struct ISACirrusVGAState,
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-                       cirrus_vga.vga.vram_size_mb, 8),
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+                       cirrus_vga.vga.vram_size_mb, 16),
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     DEFINE_PROP_END_OF_LIST(),
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 };
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@@ -2986,7 +2986,7 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev)
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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, 8),
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+                       cirrus_vga.vga.vram_size_mb, 16),
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     DEFINE_PROP_END_OF_LIST(),
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 };
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diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c
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index 9e63b69..2f34ee3 100644
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--- a/hw/display/vga-isa.c
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+++ b/hw/display/vga-isa.c
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@@ -75,7 +75,7 @@ static int vga_initfn(ISADevice *dev)
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 }
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 static Property vga_isa_properties[] = {
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-    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
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+    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 16),
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     DEFINE_PROP_END_OF_LIST(),
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 };
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diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
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index 96f6bf9..5d57a76 100644
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--- a/hw/i386/pc_piix.c
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+++ b/hw/i386/pc_piix.c
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@@ -888,18 +888,6 @@ static QEMUMachine pc_machine_rhel700 = {
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         .property = "param_change",\
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         .value    = "off",\
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     },{\
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-        .driver   = "VGA",\
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-        .property = "vgamem_mb",\
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-        .value    = stringify(8),\
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-    },{\
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-        .driver   = "qxl-vga",\
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-        .property = "vgamem_mb",\
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-        .value    = stringify(8),\
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-    },{\
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-        .driver   = "qxl",\
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-        .property = "vgamem_mb",\
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-        .value    = stringify(8),\
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-    },{\
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         .driver   = "virtio-blk-pci",\
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         .property = "config-wce",\
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         .value    = "off",\