From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
kvmarm@lists.cs.columbia.edu
Cc: Russell King <linux@arm.linux.org.uk>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Keerthy <j-keerthy@ti.com>
Subject: [PATCH v4 03/28] arm64: hyp-stub: Don't save lr in the EL1 code
Date: Tue, 21 Mar 2017 19:20:33 +0000 [thread overview]
Message-ID: <20170321192058.9300-4-marc.zyngier@arm.com> (raw)
In-Reply-To: <20170321192058.9300-1-marc.zyngier@arm.com>
The EL2 code is not corrupting lr anymore, so don't bother preserving
it in the EL1 trampoline code.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/kernel/hyp-stub.S | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index e4215ad06930..193dfb25ce2f 100644
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@@ -116,18 +116,14 @@ ENDPROC(\label)
*/
ENTRY(__hyp_get_vectors)
- str lr, [sp, #-16]!
mov x0, #HVC_GET_VECTORS
hvc #0
- ldr lr, [sp], #16
ret
ENDPROC(__hyp_get_vectors)
ENTRY(__hyp_set_vectors)
- str lr, [sp, #-16]!
mov x1, x0
mov x0, #HVC_SET_VECTORS
hvc #0
- ldr lr, [sp], #16
ret
ENDPROC(__hyp_set_vectors)
--
2.11.0
next prev parent reply other threads:[~2017-03-21 19:20 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 19:20 [PATCH v4 00/28] arm/arm64: KVM: Rework the hyp-stub API Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 01/28] arm64: hyp-stub: Stop pointlessly clobbering lr Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 02/28] arm64: KVM: Move lr save/restore to do_el2_call Marc Zyngier
2017-03-23 11:57 ` Marc Zyngier
2017-03-21 19:20 ` Marc Zyngier [this message]
2017-03-21 19:20 ` [PATCH v4 04/28] arm64: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 05/28] arm64: KVM: Implement HVC_RESET_VECTORS stub hypercall in the init code Marc Zyngier
2017-03-24 14:33 ` Christoffer Dall
2017-03-24 14:45 ` Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 06/28] arm64: KVM: Implement HVC_GET_VECTORS " Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 07/28] arm64: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-03-24 14:33 ` Christoffer Dall
2017-03-24 14:56 ` Marc Zyngier
2017-04-03 17:28 ` Christoffer Dall
2017-03-21 19:20 ` [PATCH v4 08/28] arm64: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 09/28] arm64: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 10/28] ARM: hyp-stub: improve ABI Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 11/28] ARM: soft-reboot into same mode that we entered the kernel Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 12/28] ARM: KVM: Convert KVM to use HVC_GET_VECTORS Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 13/28] ARM: Update cpu_v7_reset documentation Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 14/28] ARM: hyp-stub: Use r1 for the soft-restart address Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 15/28] ARM: Expose the VA/IDMAP offset Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 16/28] ARM: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 17/28] ARM: KVM: Implement HVC_RESET_VECTORS stub hypercall in the init code Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 18/28] ARM: KVM: Implement HVC_GET_VECTORS " Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 19/28] ARM: KVM: Allow the main HYP code to use the init hyp stub implementation Marc Zyngier
2017-03-24 14:34 ` Christoffer Dall
2017-03-24 15:01 ` Marc Zyngier
2017-04-03 17:32 ` Christoffer Dall
2017-04-03 17:51 ` Marc Zyngier
2017-04-04 7:36 ` Christoffer Dall
2017-03-21 19:20 ` [PATCH v4 20/28] ARM: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 21/28] ARM: KVM: Implement HVC_SOFT_RESTART in the init code Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 22/28] arm/arm64: KVM: Use __hyp_reset_vectors() directly Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 23/28] arm/arm64: KVM: Remove kvm_get_idmap_start Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 24/28] arm/arm64: KVM: Use HVC_RESET_VECTORS to reinit HYP mode Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 25/28] ARM: decompressor: Remove __hyp_get_vectors usage Marc Zyngier
2017-03-24 14:34 ` Christoffer Dall
2017-03-24 15:26 ` Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 26/28] ARM: hyp-stub/KVM: Kill __hyp_get_vectors Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 27/28] arm64: " Marc Zyngier
2017-03-21 19:20 ` [PATCH v4 28/28] arm/arm64: Add hyp-stub API documentation Marc Zyngier
2017-03-24 14:33 ` Christoffer Dall
2017-03-24 14:42 ` Marc Zyngier
2017-03-24 15:23 ` Christoffer Dall
2017-03-24 15:57 ` Marc Zyngier
2017-03-24 16:03 ` Christoffer Dall
2017-03-22 13:37 ` [PATCH v4 00/28] arm/arm64: KVM: Rework the hyp-stub API Christoffer Dall
2017-03-22 16:14 ` Marc Zyngier
2017-03-22 17:27 ` Christoffer Dall
2017-03-23 10:53 ` Marc Zyngier
2017-03-23 14:39 ` Christoffer Dall
2017-03-23 15:16 ` Marc Zyngier
2017-03-23 15:45 ` Christoffer Dall
2017-03-22 16:20 ` Catalin Marinas
2017-03-24 14:36 ` Christoffer Dall
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