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[Qemu-ppc] [RFC PATCH 5/9] spapr: Only setup HTP if necessary.
From: |
Sam Bobroff |
Subject: |
[Qemu-ppc] [RFC PATCH 5/9] spapr: Only setup HTP if necessary. |
Date: |
Tue, 7 Feb 2017 13:56:48 +1100 |
Because KVM cannot support radix and hash modes concurrently, QEMU can
avoid allocating a hash page table if KVM supports radix mode.
Signed-off-by: Sam Bobroff <address@hidden>
---
hw/ppc/spapr.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index d629e2630c..1411e470c0 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1150,15 +1150,17 @@ static void ppc_spapr_reset(void)
/* Check for unknown sysbus devices */
foreach_dynamic_sysbus_device(find_unknown_sysbus_device, NULL);
- /* Allocate and/or reset the hash page table */
- spapr_reallocate_hpt(spapr,
+ if (!kvmppc_has_cap_mmu_radix()) {
+ /* Allocate and/or reset the hash page table */
+ spapr_reallocate_hpt(spapr,
spapr_hpt_shift_for_ramsize(machine->maxram_size),
&error_fatal);
- /* Update the RMA size if necessary */
- if (spapr->vrma_adjust) {
- spapr->rma_size = kvmppc_rma_size(spapr_node0_size(),
- spapr->htab_shift);
+ /* Update the RMA size if necessary */
+ if (spapr->vrma_adjust) {
+ spapr->rma_size = kvmppc_rma_size(spapr_node0_size(),
+ spapr->htab_shift);
+ }
}
qemu_devices_reset();
--
2.11.0
- Re: [Qemu-ppc] [RFC PATCH 4/9] target-ppc: support KVM_CAP_PPC_MMU_RADIX, KVM_CAP_PPC_MMU_HASH_V3, (continued)
- [Qemu-ppc] [RFC PATCH 5/9] spapr: Only setup HTP if necessary.,
Sam Bobroff <=
- [Qemu-ppc] [RFC PATCH 8/9] spapr: Advertise ISA 3.0 MMU features in pa_features, Sam Bobroff, 2017/02/06
- [Qemu-ppc] [RFC PATCH 9/9] spapr: Small cleanup of PPC MMU enums, Sam Bobroff, 2017/02/06
- [Qemu-ppc] [RFC PATCH 6/9] spapr: Add h_register_process_table() hypercall, Sam Bobroff, 2017/02/06
- [Qemu-ppc] [RFC PATCH 7/9] spapr: Set ISA 3.00 radix and hash bits in OV5, Sam Bobroff, 2017/02/06