72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
From 2be730cc469be472bc3e3967690a83f1327e9fc1 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Mon, 25 Apr 2022 09:20:02 +0200
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Subject: [PATCH 1/2] malloc: use variable for ZoneHigh size
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 9: malloc: use large ZoneHigh when there is enough memory
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RH-Bugzilla: 2227373
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Oliver Steffen <osteffen@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Jon Maloy <jmaloy@redhat.com>
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RH-Commit: [1/2] 9e60f2104cc297ed4e78b92c5e5e11e11395bfc3
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Use the variable highram_size instead of the BUILD_MAX_HIGHTABLE #define
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for the ZoneHigh size. Initialize the new variable with the old #define,
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so behavior does not change.
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This allows to easily adjust the ZoneHigh size at runtime in a followup
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patch.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit 3b91e8e9fe93d5ff7edf17f984c401f9e6ba55fe)
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---
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src/malloc.c | 15 ++++++++-------
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1 file changed, 8 insertions(+), 7 deletions(-)
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diff --git a/src/malloc.c b/src/malloc.c
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index 3733855c..ecd8c9ac 100644
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--- a/src/malloc.c
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+++ b/src/malloc.c
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@@ -422,7 +422,8 @@ malloc_preinit(void)
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e820_add(BUILD_BIOS_ADDR, BUILD_BIOS_SIZE, E820_RESERVED);
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// Populate temp high ram
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- u32 highram = 0;
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+ u32 highram_start = 0;
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+ u32 highram_size = BUILD_MAX_HIGHTABLE;
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int i;
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for (i=e820_count-1; i>=0; i--) {
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struct e820entry *en = &e820_list[i];
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@@ -432,10 +433,10 @@ malloc_preinit(void)
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if (en->type != E820_RAM || end > 0xffffffff)
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continue;
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u32 s = en->start, e = end;
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- if (!highram) {
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- u32 newe = ALIGN_DOWN(e - BUILD_MAX_HIGHTABLE, MALLOC_MIN_ALIGN);
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+ if (!highram_start) {
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+ u32 newe = ALIGN_DOWN(e - highram_size, MALLOC_MIN_ALIGN);
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if (newe <= e && newe >= s) {
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- highram = newe;
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+ highram_start = newe;
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e = newe;
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}
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}
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@@ -444,9 +445,9 @@ malloc_preinit(void)
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// Populate regions
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alloc_add(&ZoneTmpLow, BUILD_STACK_ADDR, BUILD_EBDA_MINIMUM);
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- if (highram) {
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- alloc_add(&ZoneHigh, highram, highram + BUILD_MAX_HIGHTABLE);
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- e820_add(highram, BUILD_MAX_HIGHTABLE, E820_RESERVED);
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+ if (highram_start) {
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+ alloc_add(&ZoneHigh, highram_start, highram_start + highram_size);
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+ e820_add(highram_start, highram_size, E820_RESERVED);
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}
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}
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--
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2.37.3
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