| Message ID | 1461219834-10416-4-git-send-email-zhaoshenglong@huawei.com |
|---|---|
| State | New |
| Headers | show |
On Thu, Apr 21, 2016 at 02:23:52PM +0800, Shannon Zhao wrote: > From: Shannon Zhao <shannon.zhao@linaro.org> > > When specifying NUMA for ARM machine, generate /memory node according to > NUMA topology. > > Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> > --- > hw/arm/boot.c | 31 ++++++++++++++++++++++++++++++- > 1 file changed, 30 insertions(+), 1 deletion(-) > > diff --git a/hw/arm/boot.c b/hw/arm/boot.c > index 5975fbf..3770235 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; > @@ -456,14 +460,39 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo, > goto fail; > } > > + mem_len = (nb_numa_nodes > 0) ? numa_info[0].node_mem : binfo->ram_size; > rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg", So node0's memory node will still be called '/memory' instead of '/memory@addr' like the other nodes? Shouldn't we change it too? > acells, binfo->loader_start, > - scells, binfo->ram_size); > + scells, mem_len); > if (rc < 0) { > fprintf(stderr, "couldn't set /memory/reg\n"); > goto fail; > } > > + if (nb_numa_nodes > 0) { > + /* Set the numa-node-id for the first /memory node. */ > + qemu_fdt_setprop_cell(fdt, "/memory", "numa-node-id", 0); > + /* create /memory node and set properties for other memory numa nodes */ > + mem_base = binfo->loader_start + mem_len; > + for (i = 1; i < nb_numa_nodes; i++) { > + mem_len = numa_info[i].node_mem; > + nodename = g_strdup_printf("/memory@%" 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 /memory/reg\n"); I'd extend this error message with either the full memory node name, i.e. '@addr', or something like "couldn't set... for node %d\n" > + goto fail; > + } > + > + qemu_fdt_setprop_cell(fdt, nodename, "numa-node-id", i); > + mem_base += mem_len; > + g_free(nodename); > + } > + } > + > if (binfo->kernel_cmdline && *binfo->kernel_cmdline) { > rc = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", > binfo->kernel_cmdline); > -- > 2.0.4 Thanks, drew
On Sat, Apr 23, 2016 at 09:16:11AM +0800, Shannon Zhao wrote: > > > On 2016/4/22 20:48, Andrew Jones wrote: > > On Thu, Apr 21, 2016 at 02:23:52PM +0800, Shannon Zhao wrote: > >> From: Shannon Zhao <shannon.zhao@linaro.org> > >> > >> When specifying NUMA for ARM machine, generate /memory node according to > >> NUMA topology. > >> > >> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> > >> --- > >> hw/arm/boot.c | 31 ++++++++++++++++++++++++++++++- > >> 1 file changed, 30 insertions(+), 1 deletion(-) > >> > >> diff --git a/hw/arm/boot.c b/hw/arm/boot.c > >> index 5975fbf..3770235 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; > >> @@ -456,14 +460,39 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo, > >> goto fail; > >> } > >> > >> + mem_len = (nb_numa_nodes > 0) ? numa_info[0].node_mem : binfo->ram_size; > >> rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg", > > > > So node0's memory node will still be called '/memory' instead of > > '/memory@addr' like the other nodes? Shouldn't we change it too? > > > Previously I deleted the /memory node creation codes in virt.c and > create here, but that will cause other boards booting fail since > load_dtb() is a common function. So to avoid more changes to other > files, I just use current way. So is there any way to change the node > name after it's created in qemu? I'm not sure if that's possible, but we could maybe use qemu_fdt_nop_node to turn /memory into a NOP node, and then add a new one? drew
diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 5975fbf..3770235 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; @@ -456,14 +460,39 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo, goto fail; } + mem_len = (nb_numa_nodes > 0) ? numa_info[0].node_mem : binfo->ram_size; rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg", acells, binfo->loader_start, - scells, binfo->ram_size); + scells, mem_len); if (rc < 0) { fprintf(stderr, "couldn't set /memory/reg\n"); goto fail; } + if (nb_numa_nodes > 0) { + /* Set the numa-node-id for the first /memory node. */ + qemu_fdt_setprop_cell(fdt, "/memory", "numa-node-id", 0); + /* create /memory node and set properties for other memory numa nodes */ + mem_base = binfo->loader_start + mem_len; + for (i = 1; i < nb_numa_nodes; i++) { + mem_len = numa_info[i].node_mem; + nodename = g_strdup_printf("/memory@%" 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 /memory/reg\n"); + goto fail; + } + + qemu_fdt_setprop_cell(fdt, nodename, "numa-node-id", i); + mem_base += mem_len; + g_free(nodename); + } + } + if (binfo->kernel_cmdline && *binfo->kernel_cmdline) { rc = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", binfo->kernel_cmdline);