Glauber Costa wrote:
Instead of aligning to 2k boundary, as required by the bios,
align to 4k boundary, as required by kvm memory functions. Without
this patch, starting kvm with -vga std option fails with:
create_userspace_phys_mem: Invalid argument
kvm_cpu_register_physical_memory: failed
as described by: https://bugzilla.redhat.com/show_bug.cgi?id=494376
It does not fail with cirrus vga, because it is naturally aligned.
This problem does not seem to affect upstream qemu.
exit(1);
}
/* Round up vga bios size to the next 2k boundary */
- vga_bios_size = (vga_bios_size + 2047) & ~2047;
+ vga_bios_size = (vga_bios_size + 4095) & ~4095;
option_rom_start = 0xc0000 + vga_bios_size;
/* setup basic memory access */
Comment needs updating.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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