git: 1a3cb489e5aa - main - arm64: Move the initial kernel stack out of the init_pagetables section
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Date: Fri, 31 Mar 2023 15:57:54 UTC
The branch main has been updated by markj:
URL: https://cgit.FreeBSD.org/src/commit/?id=1a3cb489e5aac260eb9f48567dd6c086d62a8ea7
commit 1a3cb489e5aac260eb9f48567dd6c086d62a8ea7
Author: Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2023-03-31 15:04:37 +0000
Commit: Mark Johnston <markj@FreeBSD.org>
CommitDate: 2023-03-31 15:57:26 +0000
arm64: Move the initial kernel stack out of the init_pagetables section
init_pagetables is mapped into the segment containing the BSS, but does
not get zeroed by locore. It is used for bootstrap page table pages.
It happens that the bootstrap kernel stack is also placed in that
section, but there's no reason it shouldn't live in the BSS, so move it
there. No functional change intended.
Reviewed by: andrew
MFC after: 1 week
Sponsored by: Klara, Inc.
Sponsored by: Juniper Networks
Differential Revision: https://reviews.freebsd.org/D39367
---
sys/arm64/arm64/locore.S | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/sys/arm64/arm64/locore.S b/sys/arm64/arm64/locore.S
index a73941a01492..e17f897baeab 100644
--- a/sys/arm64/arm64/locore.S
+++ b/sys/arm64/arm64/locore.S
@@ -877,6 +877,12 @@ ENTRY(abort)
b abort
END(abort)
+.bss
+ .align PAGE_SHIFT
+initstack:
+ .space (PAGE_SIZE * KSTACK_PAGES)
+initstack_end:
+
.section .init_pagetable, "aw", %nobits
.align PAGE_SHIFT
/*
@@ -907,18 +913,11 @@ pagetable_l0_ttbr0_boostrap:
.space PAGE_SIZE
pagetable_l0_ttbr0:
.space PAGE_SIZE
-
pagetable_end:
el2_pagetable:
.space PAGE_SIZE
- .align 4
-initstack:
- .space (PAGE_SIZE * KSTACK_PAGES)
-initstack_end:
-
-
.text
EENTRY(aarch32_sigcode)
.word 0xe1a0000d // mov r0, sp