drm/etnaviv: mmuv2: don't map zero page

Keep the page at address 0 as faulting to catch any potential state
setup issues early.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
index f1c88d8..f794e04 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
@@ -320,8 +320,8 @@ etnaviv_iommuv2_domain_alloc(struct etnaviv_gpu *gpu)
        domain = &etnaviv_domain->base;
 
        domain->dev = gpu->dev;
-       domain->base = 0;
-       domain->size = (u64)SZ_1G * 4;
+       domain->base = SZ_4K;
+       domain->size = (u64)SZ_1G * 4 - SZ_4K;
        domain->ops = &etnaviv_iommuv2_ops;
 
        ret = etnaviv_iommuv2_init(etnaviv_domain);