Re: [Xen-devel] [PATCH v5 0/3] x86: make rsdp address accessible via boot params

2018-10-10 Thread Juergen Gross
On 10/10/2018 09:19, Ingo Molnar wrote: > > * Juergen Gross wrote: > >> You can just dive into the discussion we had back in February: > > That was half a year and a thousand commits ago! ;-) Yes. :-) > >> https://lore.kernel.org/lkml/20180213163244.j2zuxyhs4kbfh...@gmail.com/ >> >> The

Re: [Xen-devel] [PATCH v5 0/3] x86: make rsdp address accessible via boot params

2018-10-10 Thread Ingo Molnar
* Juergen Gross wrote: > You can just dive into the discussion we had back in February: That was half a year and a thousand commits ago! ;-) > https://lore.kernel.org/lkml/20180213163244.j2zuxyhs4kbfh...@gmail.com/ > > The scheme I have used in V5 of the series is the one you agreed to use >

Re: [Xen-devel] [PATCH v5 0/3] x86: make rsdp address accessible via boot params

2018-10-10 Thread Juergen Gross
On 10/10/2018 08:23, Ingo Molnar wrote: > > * Juergen Gross wrote: > >> In the non-EFI boot path the ACPI RSDP table is currently found via >> either EBDA or by searching through low memory for the RSDP magic. >> This requires the RSDP to be located in the first 1MB of physical >> memory. Xen

Re: [Xen-devel] [PATCH v5 0/3] x86: make rsdp address accessible via boot params

2018-10-10 Thread Ingo Molnar
* Juergen Gross wrote: > In the non-EFI boot path the ACPI RSDP table is currently found via > either EBDA or by searching through low memory for the RSDP magic. > This requires the RSDP to be located in the first 1MB of physical > memory. Xen PVH guests, however, get the RSDP address via the

[Xen-devel] [PATCH v5 0/3] x86: make rsdp address accessible via boot params

2018-10-10 Thread Juergen Gross
In the non-EFI boot path the ACPI RSDP table is currently found via either EBDA or by searching through low memory for the RSDP magic. This requires the RSDP to be located in the first 1MB of physical memory. Xen PVH guests, however, get the RSDP address via the start of day information block. In