From 790b57aed156d22d6c7101a37adc78a621be1167 Mon Sep 17 00:00:00 2001 From: Yun Wu Date: Fri, 6 Mar 2015 16:37:47 +0000 Subject: [PATCH] irqchip: gicv3-its: Use 64KB page as default granule The field of page size in register GITS_BASERn might be read-only if an implementation only supports a single, fixed page size. But currently the ITS driver will throw out an error when PAGE_SIZE is less than the minimum size supported by an ITS. So addressing this problem by using 64KB pages as default granule for all the ITS base tables. Acked-by: Marc Zyngier [maz: fixed bug breaking non Device Table allocations] Signed-off-by: Yun Wu Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1425659870-11832-9-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper --- drivers/irqchip/irq-gic-v3-its.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 69eeea3e7fac..0fe25a97a5a9 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -800,14 +800,14 @@ static int its_alloc_tables(struct its_node *its) { int err; int i; - int psz = PAGE_SIZE; + int psz = SZ_64K; u64 shr = GITS_BASER_InnerShareable; for (i = 0; i < GITS_BASER_NR_REGS; i++) { u64 val = readq_relaxed(its->base + GITS_BASER + i * 8); u64 type = GITS_BASER_TYPE(val); u64 entry_size = GITS_BASER_ENTRY_SIZE(val); - int order = 0; + int order = get_order(psz); int alloc_size; u64 tmp; void *base; -- GitLab