[Qemu-devel] [PATCH qemu] sysemu: support up to 1024 vCPUs

[Alexey Kardashevskiy]

From: Greg Kurz <address@hidden>

Some systems can already provide more than 255 hardware threads.

Bumping the QEMU limit to 1024 seems reasonable:
- it has no visible overhead in top;
- the limit itself has no effect on hot paths.

Signed-off-by: Greg Kurz <address@hidden>
Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
 include/sysemu/sysemu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index ef2c50b..2ec0bd8 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -173,7 +173,7 @@ extern int mem_prealloc;
  *
  * Note that cpu->get_arch_id() may be larger than MAX_CPUMASK_BITS.
  */
-#define MAX_CPUMASK_BITS 255
+#define MAX_CPUMASK_BITS 1024
 
 #define MAX_OPTION_ROMS 16
 typedef struct QEMUOptionRom {
-- 
2.5.0.rc3