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Re: [Qemu-devel] [for-2.9 4/5] pseries: Enable HPT resizing for 2.9
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] [for-2.9 4/5] pseries: Enable HPT resizing for 2.9 |
Date: |
Fri, 9 Dec 2016 14:26:11 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 09/12/2016 03:23, David Gibson wrote:
> We've now implemented a PAPR extensions which allows PAPR guests (i.e.
> "pseries" machine type) to resize their hash page table during runtime.
>
> However, that extension is only enabled if explicitly chosen on the
> command line. This patch enables it by default for spapr-2.9, but leaves
> it disabled (by default) for older machine types.
>
> Signed-off-by: David Gibson <address@hidden>
> ---
> hw/ppc/spapr.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index f3b74dc..25468f6 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -2770,7 +2770,7 @@ static void spapr_machine_class_init(ObjectClass *oc,
> void *data)
>
> smc->dr_lmb_enabled = true;
> smc->tcg_default_cpu = "POWER8";
> - smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED;
> + smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED;
> mc->query_hotpluggable_cpus = spapr_query_hotpluggable_cpus;
> fwc->get_dev_path = spapr_get_fw_dev_path;
> nc->nmi_monitor_handler = spapr_nmi;
> @@ -2851,8 +2851,11 @@ static void
> spapr_machine_2_8_instance_options(MachineState *machine)
>
> static void spapr_machine_2_8_class_options(MachineClass *mc)
> {
> + sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc);
> +
> spapr_machine_2_9_class_options(mc);
> SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_8);
> + smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED;
> }
>
> DEFINE_SPAPR_MACHINE(2_8, "2.8", false);
>
Reviewed-by: Laurent Vivier <address@hidden>
[Qemu-devel] [for-2.9 4/5] pseries: Enable HPT resizing for 2.9, David Gibson, 2016/12/08
- Re: [Qemu-devel] [for-2.9 4/5] pseries: Enable HPT resizing for 2.9,
Laurent Vivier <=
[Qemu-devel] [for-2.9 5/5] pseries: Use smaller default hash page tables when guest can resize, David Gibson, 2016/12/08