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From: Quentin Perret <qperret@google.com>
To: arnd@arndb.de, maz@kernel.org, catalin.marinas@arm.com, will@kernel.org
Cc: james.morse@arm.com, julien.thierry.kdev@gmail.com,
	suzuki.poulose@arm.com, ardb@kernel.org,
	linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kernel-team@android.com,
	qperret@google.com
Subject: [PATCH 2/2] KVM: arm64: Stub EXPORT_SYMBOL for nVHE EL2 code
Date: Wed,  3 Feb 2021 14:19:31 +0000	[thread overview]
Message-ID: <20210203141931.615898-3-qperret@google.com> (raw)
In-Reply-To: <20210203141931.615898-1-qperret@google.com>

In order to ensure the module loader does not get confused if a symbol
is exported in EL2 nVHE code (as will be the case when we will compile
e.g. lib/memset.S into the EL2 object), make sure to stub all exports
using __DISABLE_EXPORTS in the nvhe folder.

Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
---
 arch/arm64/kvm/hyp/nvhe/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index 1f1e351c5fe2..c9c121c8d5de 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -3,8 +3,8 @@
 # Makefile for Kernel-based Virtual Machine module, HYP/nVHE part
 #
 
-asflags-y := -D__KVM_NVHE_HYPERVISOR__
-ccflags-y := -D__KVM_NVHE_HYPERVISOR__
+asflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
+ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
 
 obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \
 	 hyp-main.o hyp-smp.o psci-relay.o
-- 
2.30.0.365.g02bc693789-goog


WARNING: multiple messages have this Message-ID (diff)
From: Quentin Perret <qperret@google.com>
To: arnd@arndb.de, maz@kernel.org, catalin.marinas@arm.com, will@kernel.org
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kernel-team@android.com,
	ardb@kernel.org
Subject: [PATCH 2/2] KVM: arm64: Stub EXPORT_SYMBOL for nVHE EL2 code
Date: Wed,  3 Feb 2021 14:19:31 +0000	[thread overview]
Message-ID: <20210203141931.615898-3-qperret@google.com> (raw)
In-Reply-To: <20210203141931.615898-1-qperret@google.com>

In order to ensure the module loader does not get confused if a symbol
is exported in EL2 nVHE code (as will be the case when we will compile
e.g. lib/memset.S into the EL2 object), make sure to stub all exports
using __DISABLE_EXPORTS in the nvhe folder.

Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
---
 arch/arm64/kvm/hyp/nvhe/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index 1f1e351c5fe2..c9c121c8d5de 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -3,8 +3,8 @@
 # Makefile for Kernel-based Virtual Machine module, HYP/nVHE part
 #
 
-asflags-y := -D__KVM_NVHE_HYPERVISOR__
-ccflags-y := -D__KVM_NVHE_HYPERVISOR__
+asflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
+ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
 
 obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \
 	 hyp-main.o hyp-smp.o psci-relay.o
-- 
2.30.0.365.g02bc693789-goog

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

WARNING: multiple messages have this Message-ID (diff)
From: Quentin Perret <qperret@google.com>
To: arnd@arndb.de, maz@kernel.org, catalin.marinas@arm.com, will@kernel.org
Cc: linux-arch@vger.kernel.org, suzuki.poulose@arm.com,
	qperret@google.com, linux-kernel@vger.kernel.org,
	kvmarm@lists.cs.columbia.edu, james.morse@arm.com,
	linux-arm-kernel@lists.infradead.org, kernel-team@android.com,
	ardb@kernel.org, julien.thierry.kdev@gmail.com
Subject: [PATCH 2/2] KVM: arm64: Stub EXPORT_SYMBOL for nVHE EL2 code
Date: Wed,  3 Feb 2021 14:19:31 +0000	[thread overview]
Message-ID: <20210203141931.615898-3-qperret@google.com> (raw)
In-Reply-To: <20210203141931.615898-1-qperret@google.com>

In order to ensure the module loader does not get confused if a symbol
is exported in EL2 nVHE code (as will be the case when we will compile
e.g. lib/memset.S into the EL2 object), make sure to stub all exports
using __DISABLE_EXPORTS in the nvhe folder.

Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
---
 arch/arm64/kvm/hyp/nvhe/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index 1f1e351c5fe2..c9c121c8d5de 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -3,8 +3,8 @@
 # Makefile for Kernel-based Virtual Machine module, HYP/nVHE part
 #
 
-asflags-y := -D__KVM_NVHE_HYPERVISOR__
-ccflags-y := -D__KVM_NVHE_HYPERVISOR__
+asflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
+ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS
 
 obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \
 	 hyp-main.o hyp-smp.o psci-relay.o
-- 
2.30.0.365.g02bc693789-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-02-03 14:21 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-03 14:19 [PATCH 0/2] KVM: arm64: Stub exports in nvhe code Quentin Perret
2021-02-03 14:19 ` Quentin Perret
2021-02-03 14:19 ` Quentin Perret
2021-02-03 14:19 ` [PATCH 1/2] asm-generic: export: Stub EXPORT_SYMBOL with __DISABLE_EXPORTS Quentin Perret
2021-02-03 14:19   ` Quentin Perret
2021-02-03 14:19   ` Quentin Perret
2021-02-03 15:24   ` Will Deacon
2021-02-03 15:24     ` Will Deacon
2021-02-03 15:24     ` Will Deacon
2021-02-03 14:19 ` Quentin Perret [this message]
2021-02-03 14:19   ` [PATCH 2/2] KVM: arm64: Stub EXPORT_SYMBOL for nVHE EL2 code Quentin Perret
2021-02-03 14:19   ` Quentin Perret
2021-02-03 16:43 ` [PATCH 0/2] KVM: arm64: Stub exports in nvhe code Marc Zyngier
2021-02-03 16:43   ` Marc Zyngier
2021-02-03 16:43   ` Marc Zyngier

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