forked from pool/grub2
50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
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From 41965e194599af42e77bcf2462bd9c0db2823b16 Mon Sep 17 00:00:00 2001
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From: Stefan Berger <stefanb@linux.ibm.com>
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Date: Tue, 1 Nov 2022 11:06:03 -0400
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Subject: [PATCH] ieee1275: Increase initially allocated heap from 1/4 to 1/3
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The patch 'ieee1275: claim more memory' (commit 910676645d) states:
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"[...] This leaves us 381MB. 1/4 of 381MB is ~95MB. That should be enough
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to verify a 30MB vmlinux and should eave plenty of space to load Linux
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and the initrd."
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As it turns out the memory limit of ~95MB is insufficient for the FADUMP
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use case as described here:
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https://bugzilla.redhat.com/show_bug.cgi?id=2139000#c1
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Adjust the current memory limitation by increasing the allocation to
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1/3 of 381 MB, so ~127MB.
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Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
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---
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grub-core/kern/ieee1275/init.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/grub-core/kern/ieee1275/init.c b/grub-core/kern/ieee1275/init.c
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index 0bacc2348..f75a36493 100644
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--- a/grub-core/kern/ieee1275/init.c
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+++ b/grub-core/kern/ieee1275/init.c
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@@ -47,7 +47,7 @@
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#include <grub/lockdown.h>
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/* The maximum heap size we're going to claim. Not used by sparc.
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- We allocate 1/4 of the available memory under 4G, up to this limit. */
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+ We allocate 1/3 of the available memory under 4G, up to this limit. */
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#ifdef __i386__
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#define HEAP_MAX_SIZE (unsigned long) (64 * 1024 * 1024)
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#else // __powerpc__
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@@ -415,7 +415,7 @@ grub_claim_heap (void)
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grub_machine_mmap_iterate (heap_size, &total);
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- total = total / 4;
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+ total = total / 3;
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if (total > HEAP_MAX_SIZE)
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total = HEAP_MAX_SIZE;
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--
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2.35.3
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