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Try reserving less RAM to fix windows booting

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Related: #2115202
Signed-off-by: Robbie Harwood <rharwood@redhat.com>
This commit is contained in:
Robbie Harwood 2022-08-08 16:32:19 +00:00
parent 11e6d3f1b0
commit ac27fd45d7
3 changed files with 40 additions and 1 deletions
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34
0277-Try-reserving-less-ram.patch Normal file
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@ -0,0 +1,34 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
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 <pjones@redhat.com>
---
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))

1
grub.patches
View file

@ -274,3 +274,4 @@ Patch0273: 0273-efi-split-allocation-policy-for-kernel-vs-initrd-mem.patch
Patch0274: 0274-efi-allocate-the-initrd-within-the-bounds-expressed-.patch Patch0274: 0274-efi-allocate-the-initrd-within-the-bounds-expressed-.patch
Patch0275: 0275-efi-use-EFI_LOADER_-CODE-DATA-for-kernel-and-initrd-.patch Patch0275: 0275-efi-use-EFI_LOADER_-CODE-DATA-for-kernel-and-initrd-.patch
Patch0276: 0276-BLS-create-etc-kernel-cmdline-during-mkconfig.patch Patch0276: 0276-BLS-create-etc-kernel-cmdline-during-mkconfig.patch
Patch0277: 0277-Try-reserving-less-ram.patch

6
grub2.spec
View file

@ -17,7 +17,7 @@
Name: grub2 Name: grub2
Epoch: 1 Epoch: 1
Version: 2.06 Version: 2.06
Release: 46%{?dist} Release: 47%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more Summary: Bootloader with support for Linux, Multiboot and more
License: GPLv3+ License: GPLv3+
URL: http://www.gnu.org/software/grub/ URL: http://www.gnu.org/software/grub/
@ -530,6 +530,10 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
%endif %endif
%changelog %changelog
* Mon Aug 08 2022 Robbie Harwood <rharwood@redhat.com> - 2.06-47
- Try reserving less RAM to fix windows booting
- Related: #2115202
* Tue Aug 02 2022 Robbie Harwood <rharwood@redhat.com> - 2.06-46 * Tue Aug 02 2022 Robbie Harwood <rharwood@redhat.com> - 2.06-46
- Populate /etc/kernel/cmdline during mkconfig - Populate /etc/kernel/cmdline during mkconfig