Dor Laor wrote: > 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. >> 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); >> > It should be 0x60000 instead of 0x20000 since the code below should > start at offset of > 0x100000. > This finally solved my problem with running virtio using kvm, before > it only worked for -no-kvm. > In general this fixes phys_mem_base + PA. > > Regards, > Dor. you will get problems using virtio with above 4 giga as well in this case, why not just using cpu_memory_write/cpu_memory_read??? (as i understand from how that cpu_register_physical_memory built this is the qemu way)
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