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Re: [Qemu-arm] [PATCH v6 2/5] ARM: Add numa-node-id for /memory node
From: |
Andrew Jones |
Subject: |
Re: [Qemu-arm] [PATCH v6 2/5] ARM: Add numa-node-id for /memory node |
Date: |
Sun, 24 Apr 2016 18:55:39 +0200 |
User-agent: |
Mutt/1.5.23.1 (2014-03-12) |
On Sat, Apr 23, 2016 at 05:06:33PM +0800, Shannon Zhao wrote:
> From: Shannon Zhao <address@hidden>
>
> When specifying NUMA for ARM machine, generate /memory node according to
> NUMA topology.
>
> Signed-off-by: Shannon Zhao <address@hidden>
> ---
> hw/arm/boot.c | 43 +++++++++++++++++++++++++++++++++++++------
> 1 file changed, 37 insertions(+), 6 deletions(-)
Reviewed-by: Andrew Jones <address@hidden>
>
> diff --git a/hw/arm/boot.c b/hw/arm/boot.c
> index 5975fbf..cbc65a7 100644
> --- a/hw/arm/boot.c
> +++ b/hw/arm/boot.c
> @@ -14,6 +14,7 @@
> #include "hw/arm/linux-boot-if.h"
> #include "sysemu/kvm.h"
> #include "sysemu/sysemu.h"
> +#include "sysemu/numa.h"
> #include "hw/boards.h"
> #include "hw/loader.h"
> #include "elf.h"
> @@ -405,6 +406,9 @@ static int load_dtb(hwaddr addr, const struct
> arm_boot_info *binfo,
> void *fdt = NULL;
> int size, rc;
> uint32_t acells, scells;
> + char *nodename;
> + unsigned int i;
> + hwaddr mem_base, mem_len;
>
> if (binfo->dtb_filename) {
> char *filename;
> @@ -456,12 +460,39 @@ static int load_dtb(hwaddr addr, const struct
> arm_boot_info *binfo,
> goto fail;
> }
>
> - rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg",
> - acells, binfo->loader_start,
> - scells, binfo->ram_size);
> - if (rc < 0) {
> - fprintf(stderr, "couldn't set /memory/reg\n");
> - goto fail;
> + if (nb_numa_nodes > 0) {
> + /*
> + * Turn the /memory node created before into a NOP node, then create
> + * /address@hidden nodes for all numa nodes respectively.
> + */
> + qemu_fdt_nop_node(fdt, "/memory");
> + mem_base = binfo->loader_start;
> + for (i = 0; i < nb_numa_nodes; i++) {
> + mem_len = numa_info[i].node_mem;
> + nodename = g_strdup_printf("/address@hidden" PRIx64, mem_base);
> + qemu_fdt_add_subnode(fdt, nodename);
> + qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
> + rc = qemu_fdt_setprop_sized_cells(fdt, nodename, "reg",
> + acells, mem_base,
> + scells, mem_len);
> + if (rc < 0) {
> + fprintf(stderr, "couldn't set %s/reg for node %d\n",
> nodename,
> + i);
> + goto fail;
> + }
> +
> + qemu_fdt_setprop_cell(fdt, nodename, "numa-node-id", i);
> + mem_base += mem_len;
> + g_free(nodename);
> + }
> + } else {
> + rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg",
> + acells, binfo->loader_start,
> + scells, binfo->ram_size);
> + if (rc < 0) {
> + fprintf(stderr, "couldn't set /memory/reg\n");
> + goto fail;
> + }
> }
>
> if (binfo->kernel_cmdline && *binfo->kernel_cmdline) {
> --
> 2.0.4
>
>
- [Qemu-arm] [PATCH v6 0/5] ARM: Add NUMA support for machine virt, Shannon Zhao, 2016/04/23
- [Qemu-arm] [PATCH v6 2/5] ARM: Add numa-node-id for /memory node, Shannon Zhao, 2016/04/23
- Re: [Qemu-arm] [PATCH v6 2/5] ARM: Add numa-node-id for /memory node,
Andrew Jones <=
- [Qemu-arm] [PATCH v6 5/5] ACPI: Virt: Generate SRAT table, Shannon Zhao, 2016/04/23
- [Qemu-arm] [PATCH v6 3/5] ACPI: Add GICC Affinity Structure, Shannon Zhao, 2016/04/23
- [Qemu-arm] [PATCH v6 1/5] ARM: Virt: Set numa-node-id for CPUs, Shannon Zhao, 2016/04/23
- [Qemu-arm] [PATCH v6 4/5] ACPI: move acpi_build_srat_memory to common place, Shannon Zhao, 2016/04/23
- Re: [Qemu-arm] [Qemu-devel] [PATCH v6 0/5] ARM: Add NUMA support for machine virt, Andrew Jones, 2016/04/24