Glauber de Oliveira Costa wrote:
> Currently, the -kernel option is not working.
>
> Reason is, because we're registering chunks for regions 0-0xa0000 and
> 0x100000-ram_size, the phys_ram_addr + PA is broken.
>
I think this patch is a reasonable work-around but the long term
solution is probably going to have to be making sure that nothing makes
the phys_ram_addr + PA assumption. With > 4GB of memory, this
assumption is broken because of the BIOS/PCI holes anyway. I guess we
could preserve this assumption though by burning some memory.
Thoughts?
Regards,
Anthony Liguori
> The real fix should be to rewrite all the load_linux() code to not rely
> on this, but meanwhile, filling in the gap up to 0xc0000 - the beginning
> of extended memory - makes it work again
>
> Signed-off-by: Glauber de Oliveira Costa <[EMAIL PROTECTED]>
> ---
> qemu/hw/pc.c | 11 ++++++++---
> 1 files changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/qemu/hw/pc.c b/qemu/hw/pc.c
> index 6c71b09..e4a5f2d 100644
> --- a/qemu/hw/pc.c
> +++ b/qemu/hw/pc.c
> @@ -725,13 +725,18 @@ static void pc_init1(ram_addr_t ram_size, int
> vga_ram_size, int boot_device,
> #ifdef USE_KVM
> #ifdef KVM_CAP_USER_MEMORY
> if (kvm_allowed && kvm_qemu_check_extension(KVM_CAP_USER_MEMORY)) {
> + ram_addr = qemu_ram_alloc(0xa0000);
> + cpu_register_physical_memory(0, 0xa0000, ram_addr);
> + kvm_cpu_register_physical_memory(0, 0xa0000, ram_addr);
> +
> + /* move the pointer up to 0xc0000, which is the next
> + address we'll touch */
> + qemu_ram_alloc(0x20000);
> +
> ram_addr = qemu_ram_alloc(ram_size - 0x100000);
> cpu_register_physical_memory(0x100000, ram_size - 0x100000,
> ram_addr);
> kvm_cpu_register_physical_memory(0x100000, ram_size - 0x100000,
> ram_addr);
> - ram_addr = qemu_ram_alloc(0xa0000);
> - cpu_register_physical_memory(0, 0xa0000, ram_addr);
> - kvm_cpu_register_physical_memory(0, 0xa0000, ram_addr);
> } else
> #endif
> #endif
>
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