Re: [Qemu-devel] [Qemu-ppc] [PATCH 2/4] spapr: Register and handle HCALL to receive updated RTAS region

[Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>]

David Gibson <david@gibson.dropbear.id.au> writes:

> On Wed, Nov 11, 2015 at 10:45:30PM +0530, Aravinda Prasad wrote:
>> Receive updates from SLOF about the updated rtas-base.
>> A separate patch for SLOF [1] adds functionality to invoke
>> a private HCALL whenever OS issues instantiate-rtas with
>> a new rtas-base.
>> 
>> This is required as QEMU needs to know the updated rtas-base
>> as it allocates error reporting structure in RTAS space upon
>> a machine check exception.
>> 
>> [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-August/120386.html
>> 
>> Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
>
> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
>
> With the obvious proviso that the SLOF update needs to be merged (both
> to SLOF and to qemu) first.

The patch is already part of SLOF tree and is there in qemu:

commit f9a60de30492863811c2cdf6f28988c9e8a2c3d9
Author: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Date:   Mon Aug 25 18:30:10 2014 +0530

    Add private HCALL to inform updated RTAS base and entry
    
    This patch adds a private HCALL to inform qemu the updated
    rtas-base and rtas-entry address when OS invokes the call
    "instantiate-rtas". This is required as qemu allocates the
    error reporting structure in RTAS space upon a machine check
    exception and hence needs to know the updated RTAS.
    
    Enhancements to qemu to handle the private HCALL, prepare
    error log and invoke machine check notification routine
    are in a separate patch.
    
    Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
    Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
    Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>

Regards
Nikunj