Re: [Qemu-devel] [PATCH for-2.1.2] pc: add more padding between the end of the initrd and the end of memory

2014-09-18 Thread Michael S. Tsirkin
On Thu, Sep 18, 2014 at 06:05:46PM +0200, Paolo Bonzini wrote: > Besides ACPI tables, there are a few other uses of high memory in SeaBIOS: > SMBIOS tables and USB drivers use it in particular. These uses allocate > a very small amount of memory. Malloc metadata also lives there. So we > need _s

[Qemu-devel] [PATCH for-2.1.2] pc: add more padding between the end of the initrd and the end of memory

2014-09-18 Thread Paolo Bonzini
Besides ACPI tables, there are a few other uses of high memory in SeaBIOS: SMBIOS tables and USB drivers use it in particular. These uses allocate a very small amount of memory. Malloc metadata also lives there. So we need _some_ extra padding there to avoid initrd breakage, but not much. John