From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 01/11] arm: kvm: move kvm_vgic_global_state out of .text section
Date: Thu, 9 Mar 2017 21:51:59 +0100 [thread overview]
Message-ID: <1489092729-16871-2-git-send-email-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <1489092729-16871-1-git-send-email-ard.biesheuvel@linaro.org>
The kvm_vgic_global_state struct contains a static key which is
written to by jump_label_init() at boot time. So in preparation of
making .text regions truly (well, almost truly) read-only, mark
kvm_vgic_global_state __ro_after_init so it moves to the .rodata
section instead.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
virt/kvm/arm/vgic/vgic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 654dfd40e449..7713d96e85b7 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -29,7 +29,9 @@
#define DEBUG_SPINLOCK_BUG_ON(p)
#endif
-struct vgic_global __section(.hyp.text) kvm_vgic_global_state = {.gicv3_cpuif = STATIC_KEY_FALSE_INIT,};
+struct vgic_global kvm_vgic_global_state __ro_after_init = {
+ .gicv3_cpuif = STATIC_KEY_FALSE_INIT,
+};
/*
* Locking order is always:
--
2.7.4
next prev parent reply other threads:[~2017-03-09 20:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-09 20:51 [PATCH v6 00/11] arm64: mmu: avoid W+X mappings and re-enable PTE_CONT for kernel Ard Biesheuvel
2017-03-09 20:51 ` Ard Biesheuvel [this message]
2017-03-09 20:52 ` [PATCH v6 02/11] arm64: mmu: move TLB maintenance from callers to create_mapping_late() Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 03/11] arm64: alternatives: apply boot time fixups via the linear mapping Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 04/11] arm64: mmu: map .text as read-only from the outset Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 05/11] arm64: mmu: apply strict permissions to .init.text and .init.data Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 06/11] arm64/mmu: align alloc_init_pte prototype with pmd/pud versions Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 07/11] arm64/mmu: ignore debug_pagealloc for kernel segments Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 08/11] arm64/mmu: add contiguous bit to sanity bug check Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 09/11] arm64/mmu: replace 'page_mappings_only' parameter with flags argument Ard Biesheuvel
2017-03-09 20:52 ` [PATCH v6 10/11] arm64/mm: remove pointless map/unmap sequences when creating page tables Ard Biesheuvel
2017-03-10 11:25 ` Mark Rutland
2017-03-09 20:52 ` [PATCH v6 11/11] arm64: mm: set the contiguous bit for kernel mappings where appropriate Ard Biesheuvel
2017-03-10 12:30 ` Mark Rutland
2017-03-23 14:12 ` [PATCH v6 00/11] arm64: mmu: avoid W+X mappings and re-enable PTE_CONT for kernel Catalin Marinas
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