alloc_pages_node() resolves NUMA_NO_NODE to numa_mem_id() internally. In preparation for switching ITS allocations to the CoCo shared memory allocator, resolve the default node explicitly in its_alloc_pages().
The CoCo shared memory allocator interprets NUMA_NO_NODE as a request to apply the current task's memory policy. Passing numa_mem_id() instead preserves the existing nearest-memory-node placement across the allocator switch. This patch does not change the current allocation behavior.
Cc: Marc Zyngier maz@kernel.org Cc: Thomas Gleixner tglx@kernel.org Cc: Radu Rendec radu@rendec.net Signed-off-by: Aneesh Kumar K.V (Arm) aneesh.kumar@kernel.org --- drivers/irqchip/irq-gic-v3-its.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index e9807af23537..ac5507acb1a0 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -32,6 +32,7 @@ #include <linux/set_memory.h> #include <linux/slab.h> #include <linux/syscore_ops.h> +#include <linux/topology.h>
#include <linux/irqchip.h> #include <linux/irqchip/arm-gic-v3.h> @@ -236,7 +237,7 @@ static struct page *its_alloc_pages_node(int node, gfp_t gfp,
static struct page *its_alloc_pages(gfp_t gfp, unsigned int order) { - return its_alloc_pages_node(NUMA_NO_NODE, gfp, order); + return its_alloc_pages_node(numa_mem_id(), gfp, order); }
static void its_free_pages(void *addr, unsigned int order)