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FROMGIT: arm64: Move .hyp.rodata outside of the _sdata.._edata range

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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: 380e18ade4 ("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
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210802123830.2195174-2-maz@kernel.org
(cherry picked from commit eb48d154cd git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next)
Signed-off-by: Marc Zyngier <mzyngier@google.com>
Bug: 194868924
Change-Id: I83eb8a573640a37d7272f004d5f1626080395d93
This commit is contained in:
Marc Zyngier 2021-08-02 13:38:29 +01:00 • committed by Will Deacon
commit 21e59d0563
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/kernel/vmlinux.lds.S
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@ -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 = .;
@ -262,8 +264,6 @@ 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