34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From: Glauber Costa <glommer@redhat.com>
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Subject: [PATCH] align vga rom to 4k boundary.
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Instead of aligning to 2k boundary, as required by the bios,
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align to 4k boundary, as required by kvm memory functions. Without
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this patch, starting kvm with -vga std option fails with:
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create_userspace_phys_mem: Invalid argument
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kvm_cpu_register_physical_memory: failed
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as described by: https://bugzilla.redhat.com/494376
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It does not fail with cirrus vga, because it is naturally aligned.
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This problem does not seem to affect upstream qemu.
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Signed-off-by: Glauber Costa <glommer@redhat.com>
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---
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qemu/hw/pc.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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Index: qemu-kvm-0.10.5/hw/pc.c
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===================================================================
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--- qemu-kvm-0.10.5.orig/hw/pc.c
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+++ qemu-kvm-0.10.5/hw/pc.c
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@@ -925,7 +925,7 @@ vga_bios_error:
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exit(1);
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}
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/* Round up vga bios size to the next 2k boundary */
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- vga_bios_size = (vga_bios_size + 2047) & ~2047;
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+ vga_bios_size = (vga_bios_size + 4095) & ~4095;
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option_rom_start = 0xc0000 + vga_bios_size;
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/* setup basic memory access */
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