[PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range

From: Marc Zyngier <maz@kernel.org>
To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Quentin Perret <qperret@google.com>,
	Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	kernel-team@android.com, stable@vger.kernel.org
Subject: [PATCH v2 1/2] arm64: Move .hyp.rodata outside of the _sdata.._edata range
Date: Mon,  2 Aug 2021 13:38:29 +0100	[thread overview]
Message-ID: <20210802123830.2195174-2-maz@kernel.org> (raw)
In-Reply-To: <20210802123830.2195174-1-maz@kernel.org>

The HYP rodata section is currently lumped together with the BSS,
which isn't exactly what is expected (it gets registered with
kmemleak, for example).

Move it away so that it is actually marked RO. As an added
benefit, it isn't registered with kmemleak anymore.

Fixes: 380e18ade4a5 ("KVM: arm64: Introduce a BSS section for use at Hyp")
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org #5.13
---
 arch/arm64/kernel/vmlinux.lds.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 709d2c433c5e..f6b1a88245db 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -181,6 +181,8 @@ SECTIONS
 	/* everything from this point to __init_begin will be marked RO NX */
 	RO_DATA(PAGE_SIZE)
 
+	HYPERVISOR_DATA_SECTIONS
+
 	idmap_pg_dir = .;
 	. += IDMAP_DIR_SIZE;
 	idmap_pg_end = .;
@@ -260,8 +262,6 @@ SECTIONS
 	_sdata = .;
 	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN)
 
-	HYPERVISOR_DATA_SECTIONS
-
 	/*
 	 * Data written with the MMU off but read with the MMU on requires
 	 * cache lines to be invalidated, discarding up to a Cache Writeback
-- 
2.30.2

