On 05.11.14 08:12, Aravinda Prasad wrote: > Extend rtas-blob to accommodate error log. Error log > structure is saved in rtas space upon a machine check > exception. > > Signed-off-by: Aravinda Prasad <aravi...@linux.vnet.ibm.com> > --- > hw/ppc/spapr.c | 7 +++++++ > include/hw/ppc/spapr.h | 5 +++++ > 2 files changed, 12 insertions(+) > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c > index 30de25d..38e26af 100644 > --- a/hw/ppc/spapr.c > +++ b/hw/ppc/spapr.c > @@ -1431,6 +1431,13 @@ static void ppc_spapr_init(MachineState *machine) > > filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin"); > spapr->rtas_size = get_image_size(filename); > + > + /* > + * Resize blob to accommodate error log. The layout of the rtas > + * blob is defined in include/hw/ppc/spapr.h > + */ > + spapr->rtas_size = TARGET_PAGE_ALIGN(spapr->rtas_size);
How big is the error log? You could just extend the RTAS blob to include space for it if it's not too big. > + > spapr->rtas_blob = g_malloc(spapr->rtas_size); > if (load_image_size(filename, spapr->rtas_blob, spapr->rtas_size) < 0) { > hw_error("qemu: could not load LPAR rtas '%s'\n", filename); > diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h > index 749daf4..d08fcc2 100644 > --- a/include/hw/ppc/spapr.h > +++ b/include/hw/ppc/spapr.h > @@ -480,4 +480,9 @@ int spapr_dma_dt(void *fdt, int node_off, const char > *propname, > int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname, > sPAPRTCETable *tcet); > > +/* RTAS Blob layout in memory */ > +#define RTAS_ENTRY_OFFSET 0 > +#define RTAS_TRAMPOLINE_OFFSET 0x200 > +#define RTAS_ERRLOG_OFFSET 0x800 I thought we agreed that these offsets should've been defined by the blob itself? Alex