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From: Quentin Perret <qperret@google.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>
Cc: "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
	<linux-arm-kernel@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>,
	"open list:KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)" 
	<kvmarm@lists.cs.columbia.edu>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" 
	<devicetree@vger.kernel.org>,
	kernel-team@android.com, android-kvm@google.com,
	Quentin Perret <qperret@google.com>
Subject: [RFC PATCH 09/27] KVM: arm64: Allow using kvm_nvhe_sym() in hyp code
Date: Tue, 17 Nov 2020 18:15:49 +0000	[thread overview]
Message-ID: <20201117181607.1761516-10-qperret@google.com> (raw)
In-Reply-To: <20201117181607.1761516-1-qperret@google.com>

In order to allow the usage of code shared by the host and the hyp in
static inline library function, allow the usage of kvm_nvhe_sym() at el2
by defaulting to the raw symbol name.

Signed-off-by: Quentin Perret <qperret@google.com>
---
 arch/arm64/include/asm/hyp_image.h | 4 ++++
 arch/arm64/include/asm/kvm_asm.h   | 4 ++--
 arch/arm64/kvm/arm.c               | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/include/asm/hyp_image.h b/arch/arm64/include/asm/hyp_image.h
index daa1a1da539e..8b807b646b8f 100644
--- a/arch/arm64/include/asm/hyp_image.h
+++ b/arch/arm64/include/asm/hyp_image.h
@@ -7,11 +7,15 @@
 #ifndef __ARM64_HYP_IMAGE_H__
 #define __ARM64_HYP_IMAGE_H__
 
+#ifndef __KVM_NVHE_HYPERVISOR__
 /*
  * KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_,
  * to separate it from the kernel proper.
  */
 #define kvm_nvhe_sym(sym)	__kvm_nvhe_##sym
+#else
+#define kvm_nvhe_sym(sym)	sym
+#endif
 
 #ifdef LINKER_SCRIPT
 
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 1a86581e581e..e4934f5e4234 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -173,11 +173,11 @@ struct kvm_s2_mmu;
 DECLARE_KVM_NVHE_SYM(__kvm_hyp_init);
 DECLARE_KVM_NVHE_SYM(__kvm_hyp_host_vector);
 DECLARE_KVM_HYP_SYM(__kvm_hyp_vector);
-DECLARE_KVM_NVHE_SYM(__kvm_hyp_psci_cpu_entry);
 #define __kvm_hyp_init			CHOOSE_NVHE_SYM(__kvm_hyp_init)
 #define __kvm_hyp_host_vector		CHOOSE_NVHE_SYM(__kvm_hyp_host_vector)
 #define __kvm_hyp_vector		CHOOSE_HYP_SYM(__kvm_hyp_vector)
-#define __kvm_hyp_psci_cpu_entry	CHOOSE_NVHE_SYM(__kvm_hyp_psci_cpu_entry)
+
+void kvm_nvhe_sym(__kvm_hyp_psci_cpu_entry)(void);
 
 extern unsigned long kvm_arm_hyp_percpu_base[NR_CPUS];
 DECLARE_KVM_NVHE_SYM(__per_cpu_start);
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 882eb383bd75..391cf6753a13 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1369,7 +1369,7 @@ static void cpu_prepare_hyp_mode(int cpu)
 
 	params->vector_hyp_va = kern_hyp_va((unsigned long)kvm_ksym_ref(__kvm_hyp_host_vector));
 	params->stack_hyp_va = kern_hyp_va(per_cpu(kvm_arm_hyp_stack_page, cpu) + PAGE_SIZE);
-	params->entry_hyp_va = kern_hyp_va((unsigned long)kvm_ksym_ref(__kvm_hyp_psci_cpu_entry));
+	params->entry_hyp_va = kern_hyp_va((unsigned long)kvm_ksym_ref_nvhe(__kvm_hyp_psci_cpu_entry));
 	params->pgd_pa = kvm_mmu_get_httbr();
 
 	/*
-- 
2.29.2.299.gdc1121823c-goog


  parent reply	other threads:[~2020-11-17 18:16 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-17 18:15 [RFC PATCH 00/27] KVM/arm64: A stage 2 for the host Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 01/27] arm64: lib: Annotate {clear,copy}_page() as position-independent Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 02/27] KVM: arm64: Link position-independent string routines into .hyp.text Quentin Perret
2020-11-23 12:34   ` David Brazdil
2020-11-23 14:06     ` Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 03/27] KVM: arm64: Add standalone ticket spinlock implementation for use at hyp Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 04/27] KVM: arm64: Initialize kvm_nvhe_init_params early Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 05/27] KVM: arm64: Avoid free_page() in page-table allocator Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 06/27] KVM: arm64: Factor memory allocation out of pgtable.c Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 07/27] KVM: arm64: Introduce a BSS section for use at Hyp Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 08/27] KVM: arm64: Make kvm_call_hyp() a function call " Quentin Perret
2020-11-23 12:51   ` David Brazdil
2020-11-17 18:15 ` Quentin Perret [this message]
2020-11-23 12:57   ` [RFC PATCH 09/27] KVM: arm64: Allow using kvm_nvhe_sym() in hyp code David Brazdil
2020-11-23 14:02     ` Quentin Perret
2020-11-23 14:54       ` David Brazdil
2020-11-17 18:15 ` [RFC PATCH 10/27] KVM: arm64: Introduce an early Hyp page allocator Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 11/27] KVM: arm64: Stub CONFIG_DEBUG_LIST at Hyp Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 12/27] KVM: arm64: Introduce a Hyp buddy page allocator Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 13/27] KVM: arm64: Enable access to sanitized CPU features at EL2 Quentin Perret
2020-11-23 10:55   ` Fuad Tabba
2020-11-23 13:51     ` Quentin Perret
2020-11-23 13:22   ` David Brazdil
2020-11-23 14:39     ` Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 14/27] KVM: arm64: Factor out vector address calculation Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 15/27] of/fdt: Introduce early_init_dt_add_memory_hyp() Quentin Perret
2020-11-17 19:44   ` Rob Herring
2020-11-18  9:25     ` Quentin Perret
2020-11-18 14:31       ` Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 16/27] KVM: arm64: Prepare Hyp memory protection Quentin Perret
2020-12-03 12:57   ` Fuad Tabba
2020-12-04 18:01     ` Quentin Perret
2020-12-07 10:20       ` Will Deacon
2020-12-07 11:05         ` Mark Rutland
2020-12-07 11:10           ` Will Deacon
2020-12-07 11:14           ` Fuad Tabba
2020-12-07 11:16       ` Fuad Tabba
2020-12-07 11:58         ` Quentin Perret
2020-12-07 13:54           ` Marc Zyngier
2020-12-07 14:17             ` Quentin Perret
2020-12-07 13:40   ` Will Deacon
2020-12-07 14:11     ` Quentin Perret
2020-12-08  9:40       ` Will Deacon
2020-11-17 18:15 ` [RFC PATCH 17/27] KVM: arm64: Elevate Hyp mappings creation at EL2 Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 18/27] KVM: arm64: Use kvm_arch for stage 2 pgtable Quentin Perret
2020-11-17 18:15 ` [RFC PATCH 19/27] KVM: arm64: Use kvm_arch in kvm_s2_mmu Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 20/27] KVM: arm64: Set host stage 2 using kvm_nvhe_init_params Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 21/27] KVM: arm64: Refactor kvm_arm_setup_stage2() Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 22/27] KVM: arm64: Refactor __load_guest_stage2() Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 23/27] KVM: arm64: Refactor __populate_fault_info() Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 24/27] KVM: arm64: Make memcache anonymous in pgtable allocator Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 25/27] KVM: arm64: Reserve memory for host stage 2 Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 26/27] KVM: arm64: Sort the memblock regions list Quentin Perret
2020-11-17 18:16 ` [RFC PATCH 27/27] KVM: arm64: Wrap the host with a stage 2 Quentin Perret

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