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[PATCH RFC v3 7/8] x86/xen: add __init for xen_pgd_walk
- To: Keith Busch <kbusch@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Sagi Grimberg <sagi@xxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Yishai Hadas <yishaih@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Peter Huewe <peterhuewe@xxxxxx>, Jarkko Sakkinen <jarkko@xxxxxxxxxx>, Masahiro Yamada <masahiroy@xxxxxxxxxx>, Nathan Chancellor <nathan@xxxxxxxxxx>, Nicolas Schier <nicolas.schier@xxxxxxxxx>, Nick Desaulniers <nick.desaulniers+lkml@xxxxxxxxx>, Bill Wendling <morbo@xxxxxxxxxx>, Justin Stitt <justinstitt@xxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Brendan Jackman <jackmanb@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Zi Yan <ziy@xxxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxx>, Boqun Feng <boqun.feng@xxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Andrey Konovalov <andreyknvl@xxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>
- From: Chen Linxuan via B4 Relay <devnull+chenlinxuan.uniontech.com@xxxxxxxxxx>
- Date: Tue, 29 Apr 2025 12:06:11 +0800
- Cc: linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, kvm@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, linux-integrity@xxxxxxxxxxxxxxx, linux-kbuild@xxxxxxxxxxxxxxx, llvm@xxxxxxxxxxxxxxx, Winston Wen <wentao@xxxxxxxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Chen Linxuan <chenlinxuan@xxxxxxxxxxxxx>, Changbin Du <changbin.du@xxxxxxxxx>
- Delivery-date: Tue, 29 Apr 2025 06:33:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
From: Chen Linxuan <chenlinxuan@xxxxxxxxxxxxx>
Presume that kernel is compiled for x86_64 with gcc version 13.3.0:
make allmodconfig
make KCFLAGS="-fno-inline-small-functions -fno-inline-functions-called-once"
This results a modpost warning:
WARNING: modpost: vmlinux: section mismatch in reference: xen_pgd_walk+0x42
(section: .text) -> xen_mark_pinned (section: .init.text)
As xen_pgd_walk is only referenced in xen_after_bootmem(void) which is
also in .init.text, I add __init for xen_pgd_walk to fix this issue.
Signed-off-by: Chen Linxuan <chenlinxuan@xxxxxxxxxxxxx>
---
arch/x86/xen/mmu_pv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index
38971c6dcd4b78b6b14f51bc69c4bf6b70ebd622..53650888be0a7b1dba170a5b7ba9c654244b5125
100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -696,7 +696,7 @@ static void __xen_pgd_walk(struct mm_struct *mm, pgd_t *pgd,
(*func)(mm, virt_to_page(pgd), PT_PGD);
}
-static void xen_pgd_walk(struct mm_struct *mm,
+static void __init xen_pgd_walk(struct mm_struct *mm,
void (*func)(struct mm_struct *mm, struct page *,
enum pt_level),
unsigned long limit)
--
2.43.0
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