[PATCH v6 06/18] KVM: arm/arm64: Add kvm_ras.h to collect kvm specific RAS plumbing
From: bp@alien8.de (Borislav Petkov)
Date: 2018-10-12 09:57:14
Also in:
kvmarm, linux-acpi, linux-mm
On Fri, Sep 21, 2018 at 11:16:53PM +0100, James Morse wrote:
quoted hunk ↗ jump to hunk
To split up APEIs in_nmi() path, we need any nmi-like callers to always be in_nmi(). KVM shouldn't have to know about this, pull the RAS plumbing out into a header file. Currently guest synchronous external aborts are claimed as RAS notifications by handle_guest_sea(), which is hidden in the arch codes mm/fault.c. 32bit gets a dummy declaration in system_misc.h. There is going to be more of this in the future if/when we support the SError-based firmware-first notification mechanism and/or kernel-first notifications for both synchronous external abort and SError. Each of these will come with some Kconfig symbols and a handful of header files. Create a header file for all this. This patch gives handle_guest_sea() a 'kvm_' prefix, and moves the declarations to kvm_ras.h as preparation for a future patch that moves the ACPI-specific RAS code out of mm/fault.c. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Punit Agrawal <redacted> Acked-by: Marc Zyngier <redacted> Tested-by: Tyler Baicar <redacted> --- arch/arm/include/asm/kvm_ras.h | 14 ++++++++++++++ arch/arm/include/asm/system_misc.h | 5 ----- arch/arm64/include/asm/kvm_ras.h | 11 +++++++++++ arch/arm64/include/asm/system_misc.h | 2 -- arch/arm64/mm/fault.c | 2 +- virt/kvm/arm/mmu.c | 4 ++-- 6 files changed, 28 insertions(+), 10 deletions(-) create mode 100644 arch/arm/include/asm/kvm_ras.h create mode 100644 arch/arm64/include/asm/kvm_ras.hdiff --git a/arch/arm/include/asm/kvm_ras.h b/arch/arm/include/asm/kvm_ras.h new file mode 100644 index 000000000000..aaff56bf338f --- /dev/null +++ b/arch/arm/include/asm/kvm_ras.h@@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 - Arm Ltd
checkpatch is complaining for some reason:
WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#66: FILE: arch/arm/include/asm/kvm_ras.h:1:
+// SPDX-License-Identifier: GPL-2.0
--
Regards/Gruss,
Boris.
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