Re: [Qemu-devel] [PATCH 0/2] Re: exec: fix regression by making system-memory region UINT64_MAX size

[Igor Mammedov]

On Thu,  7 Nov 2013 23:23:57 +0100
Laszlo Ersek <address@hidden> wrote:

> On 11/07/13 22:24, Marcel Apfelbaum wrote:
> 
> > Why pci-hole and system.flash collide? IMHO we should not play with
> > priorities here, better solve the collision.
> 
> What about this "beautiful" series? It produces
Laszlo,
 there is patch that removes PCI-hole aliases at all
 mapping PCI address space with -1 priority in system address space.
 so all access flash region range will go to it sice it's priority 0 

> 
> memory
> 0000000000000000-000fffffffffffff (prio 0, RW): system
>   [...]
>   0000000060000000-00000000ffdfffff (prio 0, RW): alias pci-hole @pci
>   0000000060000000-00000000ffdfffff
>   [...]
>   00000000ffe00000-00000000ffffffff (prio 0, R-): system.flash
> 
> and I can run OVMF with it. It also stays within i386/pc.
> 
> Re 2/2, note that "below_4g_mem_size" never exceeds 0xe0000000 in
> pc_init1(), so the subtraction is safe.
> 
> Thanks
> Laszlo
> 
> Laszlo Ersek (2):
>   i386/pc: propagate flash size from pc_system_flash_init() to
>     pc_init1()
>   i386/pc_piix: the pci-hole should end where the system flash starts
> 
>  include/hw/i386/pc.h |  6 ++++--
>  hw/i386/pc.c         |  5 +++--
>  hw/i386/pc_piix.c    |  5 +++--
>  hw/i386/pc_q35.c     |  3 ++-
>  hw/i386/pc_sysfw.c   | 10 +++++++---
>  5 files changed, 19 insertions(+), 10 deletions(-)
> 
> -- 
> 1.8.3.1
> 
> 


-- 
Regards,
  Igor