[PATCH 8/8] provide -cpu-map option

[Glauber Costa <gcosta@redhat.com>]

this patch introduces a -cpu-map option.
It has the form C:x,y,z..., and have the effect
of setting the affinity mask of vcpu C to processors
x,y,z...

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 qemu/vl.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/qemu/vl.c b/qemu/vl.c
index 4715594..fa830dd 100644
--- a/qemu/vl.c
+++ b/qemu/vl.c
@@ -8059,6 +8059,7 @@ static void help(int exitcode)
 	   "-no-kvm         disable KVM hardware virtualization\n"
 #endif
 	   "-no-kvm-irqchip disable KVM kernel mode PIC/IOAPIC/LAPIC\n"
+           "-cpu-map C:x,y,z... set cpu 'C' affinity to processors x,y,z...\n"
 #endif
 #ifdef TARGET_I386
            "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
@@ -8177,6 +8178,7 @@ enum {
     QEMU_OPTION_no_acpi,
     QEMU_OPTION_no_kvm,
     QEMU_OPTION_no_kvm_irqchip,
+    QEMU_OPTION_cpu_map,
     QEMU_OPTION_no_reboot,
     QEMU_OPTION_show_cursor,
     QEMU_OPTION_daemonize,
@@ -8263,6 +8265,7 @@ const QEMUOption qemu_options[] = {
     { "no-kvm", 0, QEMU_OPTION_no_kvm },
 #endif
     { "no-kvm-irqchip", 0, QEMU_OPTION_no_kvm_irqchip },
+    { "cpu-map", HAS_ARG, QEMU_OPTION_cpu_map },
 #endif
 #if defined(TARGET_PPC) || defined(TARGET_SPARC)
     { "g", 1, QEMU_OPTION_g },
@@ -9211,6 +9214,16 @@ int main(int argc, char **argv)
 		kvm_irqchip = 0;
 		break;
 	    }
+            case QEMU_OPTION_cpu_map: {
+                int c = atoi(optarg);
+                char *ptr = strchr(optarg, ':');
+                cpu_set_t set;
+                if (!ptr)
+                    fprintf(stderr, "invalid cpu mapping %s\n", ptr);
+                process_cpu_set(++ptr, &set);
+                kvm_store_cpu_affinity(c, &set);
+                break;
+            }
 #endif
             case QEMU_OPTION_usb:
                 usb_enabled = 1;
-- 
1.5.0.6


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