From patchwork Wed Aug 5 17:56:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 11702069 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AD0F714DD for ; Wed, 5 Aug 2020 17:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 964D121D95 for ; Wed, 5 Aug 2020 17:59:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596650390; bh=3Tfkvqoo8GFPZXEgY5NJ8zdwN9kP0ftFGO3mLvEnD1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=m1JIB2DoCAGA2rE6c9B9tDX3y1EUpV50IXmZDRUFyYQpl1kH3LLZNy1vkjkJMSmQL L7bgz6v4MhJ0r1V6IG88Q2ptyHjjI3xyGZrwTSdRg0GbutgSIXOqavefbbG7dVEvdJ s9u1APRu4ulwzLPXSj0QkqKtOEP/Hh6NnknCroEc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729021AbgHER7t (ORCPT ); Wed, 5 Aug 2020 13:59:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:46426 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729056AbgHER6W (ORCPT ); Wed, 5 Aug 2020 13:58:22 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 57C9A22D02; Wed, 5 Aug 2020 17:57:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596650239; bh=3Tfkvqoo8GFPZXEgY5NJ8zdwN9kP0ftFGO3mLvEnD1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nLgBjoP4hI7Bg1AKLcAd0tELZnTTuzYpHe0aqkyEg3E+supjbL5ueXv7gdoBpajeP MyCDmGjbD4OGxJRYZvFJwSHTj9joBNnUyo7pYRt8iwgJf4Nb8kW0FJSaZvBd/OzqR9 DONem/7ea0Ys7hS+X5XswKwOv/z4s7z1lnoLtKfM= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k3NfB-0004w9-R4; Wed, 05 Aug 2020 18:57:17 +0100 From: Marc Zyngier To: Paolo Bonzini Cc: Alexander Graf , Alexandru Elisei , Andrew Scull , Catalin Marinas , Christoffer Dall , David Brazdil , Eric Auger , Gavin Shan , James Morse , Mark Rutland , Peng Hao , Quentin Perret , Will Deacon , Julien Thierry , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com Subject: [PATCH 07/56] arm64: kvm: Remove kern_hyp_va from get_vcpu_ptr Date: Wed, 5 Aug 2020 18:56:11 +0100 Message-Id: <20200805175700.62775-8-maz@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200805175700.62775-1-maz@kernel.org> References: <20200805175700.62775-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, graf@amazon.com, alexandru.elisei@arm.com, ascull@google.com, catalin.marinas@arm.com, christoffer.dall@arm.com, dbrazdil@google.com, eric.auger@redhat.com, gshan@redhat.com, james.morse@arm.com, mark.rutland@arm.com, richard.peng@oppo.com, qperret@google.com, will@kernel.org, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Andrew Scull get_vcpu_ptr is an assembly accessor for the percpu value kvm_host_data->host_ctxt.__hyp_running_vcpu. kern_hyp_va only applies to nVHE however __hyp_running_vcpu is always assigned a pointer that has already had kern_hyp_va applied in __kvm_vcpu_run_nvhe. kern_hyp_va is currently idempotent as it just masks and inserts the tag, but this could change in future and the second application is unnecessary. Signed-off-by: Andrew Scull Signed-off-by: Marc Zyngier Reviewed-by: James Morse Link: https://lore.kernel.org/r/20200618093616.164413-1-ascull@google.com --- arch/arm64/include/asm/kvm_asm.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 352aaebf4198..ac71d0939f2e 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -143,7 +143,6 @@ extern char __smccc_workaround_1_smc[__SMCCC_WORKAROUND_1_SMC_SZ]; .macro get_vcpu_ptr vcpu, ctxt get_host_ctxt \ctxt, \vcpu ldr \vcpu, [\ctxt, #HOST_CONTEXT_VCPU] - kern_hyp_va \vcpu .endm #endif