From: Andi Kleen <ak@suse.de>
Date: Mon, 12 Sep 2005 16:49:24 +0000 (+0200)
Subject: [PATCH] x86-64: Don't allocate aperture when swiotlb is enabled and no AGP found
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=63f02fd7ceb2fa4065d8a0c9943e4af2876b6c91;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] x86-64: Don't allocate aperture when swiotlb is enabled and no AGP found

No-one needs it then

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index c9a6b812e926..962ad4823b6a 100644
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -245,6 +245,8 @@ void __init iommu_hole_init(void)
 		
 	if (aper_alloc) { 
 		/* Got the aperture from the AGP bridge */
+	} else if (swiotlb && !valid_agp) {
+		/* Do nothing */
 	} else if ((!no_iommu && end_pfn >= 0xffffffff>>PAGE_SHIFT) ||
 		   force_iommu ||
 		   valid_agp ||