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[Qemu-ppc] [PATCH 35/64] PPC: SPAPR: Use KVM function for time info
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PATCH 35/64] PPC: SPAPR: Use KVM function for time info |
Date: |
Thu, 6 Oct 2011 10:05:37 +0200 |
One of the things we can't fake on PPC is the timer speed. So
we need to extract the frequency information from the host and
put it back into the guest device tree.
Luckily, we already have functions for that from the non-pseries
targets, so all we need to do is to connect the dots and the guest
suddenly gets to know its real timer speeds.
Signed-off-by: Alexander Graf <address@hidden>
---
hw/spapr.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/hw/spapr.c b/hw/spapr.c
index c5c9a95..760e323 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -140,6 +140,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
char *nodename;
uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
0xffffffff, 0xffffffff};
+ uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() : TIMEBASE_FREQ;
+ uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
if (asprintf(&nodename, "address@hidden", modelname, index) < 0) {
fprintf(stderr, "Allocation failure\n");
@@ -158,10 +160,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
env->dcache_line_size)));
_FDT((fdt_property_cell(fdt, "icache-block-size",
env->icache_line_size)));
- _FDT((fdt_property_cell(fdt, "timebase-frequency", TIMEBASE_FREQ)));
- /* Hardcode CPU frequency for now. It's kind of arbitrary on
- * full emu, for kvm we should copy it from the host */
- _FDT((fdt_property_cell(fdt, "clock-frequency", 1000000000)));
+ _FDT((fdt_property_cell(fdt, "timebase-frequency", tbfreq)));
+ _FDT((fdt_property_cell(fdt, "clock-frequency", cpufreq)));
_FDT((fdt_property_cell(fdt, "ibm,slb-size", env->slb_nr)));
_FDT((fdt_property(fdt, "ibm,pft-size",
pft_size_prop, sizeof(pft_size_prop))));
--
1.6.0.2
- [Qemu-ppc] [PATCH 32/64] PPC: Add new target config for pseries, (continued)
- [Qemu-ppc] [PATCH 32/64] PPC: Add new target config for pseries, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 61/64] PPC: Clean up BookE timer code, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 58/64] KVM: Update kernel headers, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 21/64] PPC: KVM: Add stubs for kvm helper functions, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 52/64] openpic: Unfold read_IRQreg, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 26/64] device tree: add add_subnode command, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 60/64] PPC: booke timers, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 23/64] PPC: E500: Remove unneeded CPU nodes, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 24/64] PPC: E500: Add PV spinning code, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 53/64] openpic: Unfold write_IRQreg, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 35/64] PPC: SPAPR: Use KVM function for time info,
Alexander Graf <=
- [Qemu-ppc] [PATCH 39/64] pseries: More complete WIMG validation in H_ENTER code, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 43/64] KVM: Update kernel headers, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 51/64] ppc405: use RAM_ADDR_FMT instead of %08lx, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 15/64] PPC: bamboo: Move host fdt copy to target, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 57/64] KVM: Update kernel headers, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 47/64] Implement POWER7's CFAR in TCG, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 49/64] vscsi: send the CHECK_CONDITION status down together with autosense data, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 04/64] PPC: Move openpic to target specific code compilation, Alexander Graf, 2011/10/06
- [Qemu-ppc] [PATCH 40/64] PPC: Fix sync instructions problem in SMP, Alexander Graf, 2011/10/06