Commit eb48d154 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

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



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: 380e18ad ("KVM: arm64: Introduce a BSS section for use at Hyp")
Suggested-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org #5.13
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210802123830.2195174-2-maz@kernel.org
parent c500bee1

arch/arm64/kernel/vmlinux.lds.S

+2 −2
Original line number Diff line number Diff line
@@ -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