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