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target/ppc: Fold slb_nr into PPCHash64Options

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The env->slb_nr field gives the size of the SLB (Segment Lookaside Buffer).
This is another static-after-initialization parameter of the specific
version of the 64-bit hash MMU in the CPU.  So, this patch folds the field
into PPCHash64Options with the other hash MMU options.

This is a bit more complicated that the things previously put in there,
because slb_nr was foolishly included in the migration stream.  So we need
some of the usual dance to handle backwards compatible migration.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
This commit is contained in:
David Gibson 2018-03-29 18:29:38 +11:00
parent 0941d728a4
commit 67d7d66f27
8 changed files with 44 additions and 30 deletions
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11
hw/ppc/spapr.c
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@ -547,8 +547,8 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset,
_FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq)));
_FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq)));
_FDT((fdt_setprop_cell(fdt, offset, "slb-size", env->slb_nr)));
_FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", env->slb_nr)));
_FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size)));
_FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size)));
_FDT((fdt_setprop_string(fdt, offset, "status", "okay")));
_FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0)));
@ -3958,7 +3958,12 @@ DEFINE_SPAPR_MACHINE(2_13, "2.13", true);
* pseries-2.12
*/
#define SPAPR_COMPAT_2_12 \
HW_COMPAT_2_12
HW_COMPAT_2_12 \
{ \
.driver = TYPE_POWERPC_CPU, \
.property = "pre-2.13-migration", \
.value = "on", \
},
static void spapr_machine_2_12_instance_options(MachineState *machine)
{