From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Mon, 8 Aug 2022 11:23:59 -0400 Subject: [PATCH] Try reserving less ram... In 005a0aaaad2a00a1fa1e60d94cc4fd5407c22e7d, we switched from reserving one quarter of the available free memory to three quarters. Apparently this has some unfortunate side-affects for some workloads, and has negatively effected chainloading[0] as well as Fedora CoreOS[1]. This patch changes it to reserve /half/ of available memory, in hopes that this is a working compromise. [0] https://bugzilla.redhat.com/show_bug.cgi?id=2115202 [1] https://github.com/coreos/fedora-coreos-tracker/issues/1271 Signed-off-by: Peter Jones --- 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 150e412ee7..b4e012f5e7 100644 --- a/grub-core/kern/efi/mm.c +++ b/grub-core/kern/efi/mm.c @@ -740,7 +740,7 @@ grub_efi_mm_init (void) /* By default, request three quarters of the available memory. */ total_pages = get_total_pages (filtered_memory_map, desc_size, filtered_memory_map_end); - required_pages = (total_pages >> 1) + (total_pages >> 2); + required_pages = (total_pages >> 1); if (required_pages < BYTES_TO_PAGES (MIN_HEAP_SIZE)) required_pages = BYTES_TO_PAGES (MIN_HEAP_SIZE); else if (required_pages > BYTES_TO_PAGES (MAX_HEAP_SIZE))