From: Breno Leitao <leitao@debian.org>
Date: Mon, 7 Jul 2025 16:01:01 +0000 (-0700)
Subject: arm64: Mandate VMAP_STACK
X-Git-Tag: v6.17-rc1~131^2~1^10~7
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ef6861b8e6dd7d933e29022b6620c42085b907f9;p=thirdparty%2Flinux.git

arm64: Mandate VMAP_STACK

On arm64, VMAP_STACK has been enabled by default for a while now, and
the only reason to disable it was a historical lack of support for
KASAN_VMALLOC. Today there's no good reason to disable VMAP_STACK.

Mandate VMAP_STACK, which will allow code to be simplified in
subsequent patches.

Suggested-by: Will Deacon <will@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20250707-arm64_vmap-v1-1-8de98ca0f91c@debian.org
Signed-off-by: Will Deacon <will@kernel.org>
---

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 55fc331af3371..b38230a8cc7ed 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -279,6 +279,7 @@ config ARM64
 	select HAVE_SOFTIRQ_ON_OWN_STACK
 	select USER_STACKTRACE_SUPPORT
 	select VDSO_GETRANDOM
+	select VMAP_STACK
 	help
 	  ARM 64-bit (AArch64) Linux support.