Date: Fri, 31 Mar 2023 15:57:54 GMT From: Mark Johnston <markj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 1a3cb489e5aa - main - arm64: Move the initial kernel stack out of the init_pagetables section Message-ID: <202303311557.32VFvsJk081271@gitrepo.freebsd.org>
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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
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