File 0022-efi_loader-Keep-memory-mapping-sort.patch of Package u-boot-a20-olinuxinomicro

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File 0022-efi_loader-Keep-memory-mapping-sort.patch of Package u-boot-a20-olinuxinomicro

From 54af1e79726ed7c1032d493145be9332154c7e6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
Date: Sat, 1 Oct 2016 23:32:28 +0200
Subject: [PATCH] efi_loader: Keep memory mapping sorted when splitting an
 entry
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The code assumes sorted mappings in descending address order. When
splitting a mapping, insert the new part next to the current mapping.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
 lib/efi_loader/efi_memory.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index d3a2ffd..742bc90 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -135,7 +135,8 @@ static int efi_mem_carve_out(struct efi_mem_list *map,
 	newmap->desc = map->desc;
 	newmap->desc.physical_start = carve_start;
 	newmap->desc.num_pages = (map_end - carve_start) >> EFI_PAGE_SHIFT;
-        list_add_tail(&newmap->link, &efi_mem);
+	/* Insert before current entry (descending address order) */
+	list_add_tail(&newmap->link, &map->link);
 
 	/* Shrink the map to [ map_start ... carve_start ] */
 	map_desc->num_pages = (carve_start - map_start) >> EFI_PAGE_SHIFT;

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File 0022-efi_loader-Keep-memory-mapping-sort.patch of Package u-boot-a20-olinuxinomicro

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