On 18.03.24 16:08, Jan Beulich wrote:
On 14.03.2024 08:20, Juergen Gross wrote:
--- a/xen/include/xen/spinlock.h
+++ b/xen/include/xen/spinlock.h
@@ -8,16 +8,16 @@
#include
#include
-#define SPINLOCK_CPU_BITS 12
+#define SPINLOCK_CPU_BITS 16
#ifdef CONFIG_DEBUG_LOCKS
union
On 14.03.2024 08:20, Juergen Gross wrote:
> --- a/xen/include/xen/spinlock.h
> +++ b/xen/include/xen/spinlock.h
> @@ -8,16 +8,16 @@
> #include
> #include
>
> -#define SPINLOCK_CPU_BITS 12
> +#define SPINLOCK_CPU_BITS 16
>
> #ifdef CONFIG_DEBUG_LOCKS
> union lock_debug {
> -uint16_t
Allow 16 bits per cpu number, which is the limit imposed by
spinlock_tickets_t.
This will allow up to 65535 cpus, while increasing only the size of
recursive spinlocks in debug builds from 8 to 12 bytes.
The current Xen limit of 4095 cpus is imposed by SPINLOCK_CPU_BITS
being 12. There are
