linux-kernel - [kvmtool PATCH 19/17] kvmtool: arm64: Add support for guest physical address size

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Date:   Tue, 27 Mar 2018 14:15:29 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, kvmarm@...ts.cs.columbia.edu,
        kvm@...r.kernel.org, cdall@...nel.org, marc.zyngier@....com,
        punit.agrawal@....com, will.deacon@....com,
        catalin.marinas@....com, pbonzini@...hat.com, rkrcmar@...hat.com,
        ard.biesheuvel@...aro.org, peter.maydell@...aro.org,
        kristina.martsenko@....com, mark.rutland@....com,
        Suzuki K Poulose <suzuki.poulose@....com>
Subject: [kvmtool PATCH 19/17] kvmtool: arm64: Add support for guest physical address size

Add an option to specify the physical address size used by this
VM.

Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 arm/aarch64/include/kvm/kvm-config-arch.h | 5 ++++-
 arm/include/arm-common/kvm-config-arch.h  | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arm/aarch64/include/kvm/kvm-config-arch.h b/arm/aarch64/include/kvm/kvm-config-arch.h
index 04be43d..c4bb207 100644
--- a/arm/aarch64/include/kvm/kvm-config-arch.h
+++ b/arm/aarch64/include/kvm/kvm-config-arch.h
@@ -8,7 +8,10 @@
 			"Create PMUv3 device"),				\
 	OPT_U64('\0', "kaslr-seed", &(cfg)->kaslr_seed,			\
 			"Specify random seed for Kernel Address Space "	\
-			"Layout Randomization (KASLR)"),
+			"Layout Randomization (KASLR)"),		\
+	OPT_UINTEGER('\0', "phys-shift", &(cfg)->phys_shift,		\
+			"Specify maximum physical address size (not "	\
+			"the amount of memory)"),
 
 #include "arm-common/kvm-config-arch.h"
 
diff --git a/arm/include/arm-common/kvm-config-arch.h b/arm/include/arm-common/kvm-config-arch.h
index 6a196f1..d841b0b 100644
--- a/arm/include/arm-common/kvm-config-arch.h
+++ b/arm/include/arm-common/kvm-config-arch.h
@@ -11,6 +11,7 @@ struct kvm_config_arch {
 	bool		has_pmuv3;
 	u64		kaslr_seed;
 	enum irqchip_type irqchip;
+	unsigned int	phys_shift;
 };
 
 int irqchip_parser(const struct option *opt, const char *arg, int unset);
-- 
1.9.1