From f9eb742988e20fb86926de8ad18d7e93b53d1a62 Mon Sep 17 00:00:00 2001 From: Matthew Auld Date: Fri, 25 Feb 2022 14:55:00 +0000 Subject: [PATCH] drm/i915/buddy: adjust res->start MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Differentiate between mappable vs non-mappable resources, also if this is an actual range allocation ensure we set res->start as the starting pfn. Later when we need to do non-mappable -> mappable moves then we want TTM to see that the current placement is not compatible, which should result in an actual move, instead of being turned into a noop. Signed-off-by: Matthew Auld Cc: Thomas Hellström Reviewed-by: Thomas Hellström Acked-by: Nirmoy Das Link: https://patchwork.freedesktop.org/patch/msgid/20220225145502.331818-5-matthew.auld@intel.com --- drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c index e47a3d46c6ff..0ac6b2463fd5 100644 --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c @@ -141,6 +141,13 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man, mutex_unlock(&bman->lock); } + if (place->lpfn - place->fpfn == n_pages) + bman_res->base.start = place->fpfn; + else if (lpfn <= bman->visible_size) + bman_res->base.start = 0; + else + bman_res->base.start = bman->visible_size; + *res = &bman_res->base; return 0; -- 2.11.0