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Blame 0005-qxl-Add-rom_size-compat-property-fix-migration-from-.patch

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From ae8d642477d87287b42b0b40c133637dd1cdd8b9 Mon Sep 17 00:00:00 2001
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From: Cole Robinson <crobinso@redhat.com>
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Date: Tue, 19 Feb 2013 16:19:02 -0500
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Subject: [PATCH] qxl: Add rom_size compat property, fix migration from 1.2
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Commit 038c1879a00153b14bce113315b693e8c2944fa9 changed the qxl rom
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size to 8192, which fixes incoming migration from qemu 1.0. However
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from qemu 1.2 and 1.3 had rom size 16384, so incoming migration
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from those versions is now broken.
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Add a rom_size compat property. 1.2 and 1.3 get 16384, everything
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else is 8192.
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This isn't actually fool proof, since rom_size can be dependent on
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the version of spice qemu is built against:
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https://lists.gnu.org/archive/html/qemu-devel/2013-02/msg03154.html
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However these sizes match what native Fedora packages get, so it's
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good enough for now.
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---
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 hw/display/qxl.c  |  9 ++++-----
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 hw/i386/pc_piix.c | 16 ++++++++++++++++
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 2 files changed, 20 insertions(+), 5 deletions(-)
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diff --git a/hw/display/qxl.c b/hw/display/qxl.c
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index c475cb1..74f07c0 100644
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--- a/hw/display/qxl.c
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+++ b/hw/display/qxl.c
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@@ -306,16 +306,14 @@ static inline uint32_t msb_mask(uint32_t val)
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     return mask;
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 }
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-static ram_addr_t qxl_rom_size(void)
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+static void check_qxl_rom_size(PCIQXLDevice *d)
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 {
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     uint32_t required_rom_size = sizeof(QXLRom) + sizeof(QXLModes) +
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                                  sizeof(qxl_modes);
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-    uint32_t rom_size = 8192; /* two pages */
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     required_rom_size = MAX(required_rom_size, TARGET_PAGE_SIZE);
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     required_rom_size = msb_mask(required_rom_size * 2 - 1);
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-    assert(required_rom_size <= rom_size);
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-    return rom_size;
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+    assert(required_rom_size <= d->rom_size);
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 }
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 static void init_qxl_rom(PCIQXLDevice *d)
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@@ -1979,7 +1977,7 @@ static int qxl_init_common(PCIQXLDevice *qxl)
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     pci_set_byte(&config[PCI_REVISION_ID], pci_device_rev);
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     pci_set_byte(&config[PCI_INTERRUPT_PIN], 1);
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-    qxl->rom_size = qxl_rom_size();
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+    check_qxl_rom_size(qxl);
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     memory_region_init_ram(&qxl->rom_bar, "qxl.vrom", qxl->rom_size);
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     vmstate_register_ram(&qxl->rom_bar, &qxl->pci.qdev);
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     init_qxl_rom(qxl);
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@@ -2302,6 +2300,7 @@ static Property qxl_properties[] = {
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         DEFINE_PROP_UINT32("vram64_size_mb", PCIQXLDevice, vram_size_mb, -1),
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         DEFINE_PROP_UINT32("vgamem_mb", PCIQXLDevice, vgamem_size_mb, 16),
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         DEFINE_PROP_INT32("surfaces", PCIQXLDevice, ssd.num_surfaces, 1024),
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+        DEFINE_PROP_UINT32("rom_size", PCIQXLDevice, rom_size, 8192),
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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 48fb7b7..2307d26 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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@@ -369,6 +369,14 @@ static QEMUMachine pc_i440fx_machine_v1_4 = {
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             .driver   = "e1000",\
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             .property = "autonegotiation",\
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             .value    = "off",\
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+        },{ \
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+            .driver   = "qxl", \
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+            .property = "rom_size", \
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+            .value    = stringify(16384), \
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+        },{\
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+            .driver   = "qxl-vga", \
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+            .property = "rom_size", \
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+            .value    = stringify(16384), \
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         }
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 static QEMUMachine pc_machine_v1_3 = {
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@@ -465,6 +473,14 @@ static QEMUMachine pc_machine_v1_2 = {
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             .driver   = "virtio-blk-pci",\
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             .property = "config-wce",\
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             .value    = "off",\
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+        },{ \
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+            .driver   = "qxl", \
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+            .property = "rom_size", \
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+            .value    = stringify(8192), \
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+        },{\
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+            .driver   = "qxl-vga", \
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+            .property = "rom_size", \
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+            .value    = stringify(8192), \
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         }
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 static QEMUMachine pc_machine_v1_1 = {