From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Daniel Axtens <dja@axtens.net>

Date: Tue, 20 Sep 2022 00:30:30 +1000

Subject: [PATCH] efi: Increase default memory allocation to 32 MiB

We have multiple reports of things being slower with a 1 MiB initial static

allocation, and a report (more difficult to nail down) of a boot failure

as a result of the smaller initial allocation.

Make the initial memory allocation 32 MiB.

Signed-off-by: Daniel Axtens <dja@axtens.net>

Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

(cherry picked from commit 75e38e86e7d9202f050b093f20500d9ad4c6dad9)

---

 grub-core/kern/efi/mm.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/grub-core/kern/efi/mm.c b/grub-core/kern/efi/mm.c

index 016ba6cf2f..b27e966e1f 100644

--- a/grub-core/kern/efi/mm.c

+++ b/grub-core/kern/efi/mm.c

@@ -39,7 +39,7 @@

 #define MEMORY_MAP_SIZE	0x3000

 /* The default heap size for GRUB itself in bytes.  */

-#define DEFAULT_HEAP_SIZE	0x100000

+#define DEFAULT_HEAP_SIZE	0x2000000

 static void *finish_mmap_buf = 0;

 static grub_efi_uintn_t finish_mmap_size = 0;