Messages in this thread Patch in this message |  | | From | Zenghui Yu <> | Subject | [PATCH 1/5] irqchip/gic-v4.1: Fix programming of GICR_VPROPBASER_4_1_SIZE | Date | Tue, 4 Feb 2020 17:09:36 +0800 |
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The Size field of GICv4.1 VPROPBASER register indicates number of pages minus one and together Page_Size and Size control the vPEID width. Let's respect this requirement of the architecture.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> --- drivers/irqchip/irq-gic-v3-its.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index e5a25d97f8db..992bc72cab6f 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -2531,7 +2531,7 @@ static int allocate_vpe_l1_table(void) npg = 1; } - val |= FIELD_PREP(GICR_VPROPBASER_4_1_SIZE, npg); + val |= FIELD_PREP(GICR_VPROPBASER_4_1_SIZE, npg - 1); /* Right, that's the number of CPU pages we need for L1 */ np = DIV_ROUND_UP(npg * psz, PAGE_SIZE); -- 2.19.1
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