From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
kvmarm@lists.cs.columbia.edu
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Russell King <linux@arm.linux.org.uk>
Subject: [PATCH 05/20] arm64: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors
Date: Fri, 17 Feb 2017 15:44:14 +0000 [thread overview]
Message-ID: <20170217154429.5000-6-marc.zyngier@arm.com> (raw)
In-Reply-To: <20170217154429.5000-1-marc.zyngier@arm.com>
We are now able to use the hyp stub to reset HYP mode. Time to
kiss __kvm_hyp_reset goodbye, and use __hyp_reset_vectors.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/include/asm/kvm_asm.h | 1 -
arch/arm64/include/asm/kvm_host.h | 4 ++--
arch/arm64/kvm/hyp-init.S | 2 --
arch/arm64/kvm/hyp/hyp-entry.S | 15 ---------------
4 files changed, 2 insertions(+), 20 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index ec3553eb9349..3e242f6613b3 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -47,7 +47,6 @@ struct kvm_vcpu;
extern char __kvm_hyp_init[];
extern char __kvm_hyp_init_end[];
-extern char __kvm_hyp_reset[];
extern char __kvm_hyp_vector[];
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index e5050388e062..2e493e9a671e 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -361,11 +361,11 @@ static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
__kvm_call_hyp((void *)pgd_ptr, hyp_stack_ptr, vector_ptr);
}
-void __kvm_hyp_teardown(void);
static inline void __cpu_reset_hyp_mode(unsigned long vector_ptr,
phys_addr_t phys_idmap_start)
{
- kvm_call_hyp(__kvm_hyp_teardown, phys_idmap_start);
+ extern void __hyp_reset_vectors(void);
+ __hyp_reset_vectors();
}
static inline void kvm_arch_hardware_unsetup(void) {}
diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
index 2c7b86bb5483..d12a232abd81 100644
--- a/arch/arm64/kvm/hyp-init.S
+++ b/arch/arm64/kvm/hyp-init.S
@@ -134,7 +134,6 @@ ENTRY(__kvm_handle_stub_hvc)
/*
* Reset kvm back to the hyp stub.
*/
-ENTRY(__kvm_hyp_reset)
/* We're now in idmap, disable MMU */
mrs x0, sctlr_el2
ldr x1, =SCTLR_ELx_FLAGS
@@ -151,7 +150,6 @@ ENTRY(__kvm_hyp_reset)
exit:
eret
-ENDPROC(__kvm_hyp_reset)
ENDPROC(__kvm_handle_stub_hvc)
.ltorg
diff --git a/arch/arm64/kvm/hyp/hyp-entry.S b/arch/arm64/kvm/hyp/hyp-entry.S
index 21eeb2552f33..1277f81b63b7 100644
--- a/arch/arm64/kvm/hyp/hyp-entry.S
+++ b/arch/arm64/kvm/hyp/hyp-entry.S
@@ -53,21 +53,6 @@ ENTRY(__vhe_hyp_call)
ret
ENDPROC(__vhe_hyp_call)
-/*
- * Compute the idmap address of __kvm_hyp_reset based on the idmap
- * start passed as a parameter, and jump there.
- *
- * x0: HYP phys_idmap_start
- */
-ENTRY(__kvm_hyp_teardown)
- mov x4, x0
- adr_l x3, __kvm_hyp_reset
-
- /* insert __kvm_hyp_reset()s offset into phys_idmap_start */
- bfi x4, x3, #0, #PAGE_SHIFT
- br x4
-ENDPROC(__kvm_hyp_teardown)
-
el1_sync: // Guest trapped into EL2
stp x0, x1, [sp, #-16]!
--
2.11.0
next prev parent reply other threads:[~2017-02-17 15:44 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-17 15:44 [PATCH 00/20] arm/arm64: KVM: Rework the hyp-stub API Marc Zyngier
2017-02-17 15:44 ` [PATCH 01/20] arm64: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-02-17 15:44 ` [PATCH 02/20] arm64: KVM: " Marc Zyngier
2017-02-20 16:54 ` James Morse
2017-02-17 15:44 ` [PATCH 03/20] arm64: KVM: Implement HVC_GET_VECTORS in the init code Marc Zyngier
2017-02-17 15:44 ` [PATCH 04/20] arm64: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-02-17 15:44 ` Marc Zyngier [this message]
2017-02-17 15:44 ` [PATCH 06/20] arm64: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-02-17 15:44 ` [PATCH 07/20] ARM: hyp-stub: improve ABI Marc Zyngier
2017-02-17 15:44 ` [PATCH 08/20] ARM: soft-reboot into same mode that we entered the kernel Marc Zyngier
2017-02-17 15:44 ` [PATCH 09/20] ARM: KVM: Convert KVM to use HVC_GET_VECTORS Marc Zyngier
2017-02-17 15:44 ` [PATCH 10/20] ARM: hyp-stub: Use r1 for the soft-restart address Marc Zyngier
2017-02-19 8:22 ` Ard Biesheuvel
2017-02-19 11:09 ` Marc Zyngier
2017-02-17 15:44 ` [PATCH 11/20] ARM: Expose the VA/IDMAP offset Marc Zyngier
2017-02-17 15:44 ` [PATCH 12/20] ARM: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-02-17 15:44 ` [PATCH 13/20] ARM: KVM: " Marc Zyngier
2017-02-19 8:07 ` Ard Biesheuvel
2017-02-19 11:19 ` Marc Zyngier
2017-02-19 11:42 ` Ard Biesheuvel
2017-02-17 15:44 ` [PATCH 14/20] ARM: KVM: Implement HVC_GET_VECTORS in the init code Marc Zyngier
2017-02-17 15:44 ` [PATCH 15/20] ARM: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-02-17 15:44 ` [PATCH 16/20] ARM: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors Marc Zyngier
2017-02-17 15:44 ` [PATCH 17/20] ARM: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-02-17 15:44 ` [PATCH 18/20] arm/arm64: KVM: Simplify __cpu_reset_hyp_mode Marc Zyngier
2017-02-17 15:44 ` [PATCH 19/20] arm/arm64: KVM: Remove kvm_get_idmap_start Marc Zyngier
2017-02-17 15:44 ` [PATCH 20/20] arm/arm64: Add hyp-stub API documentation Marc Zyngier
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