From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 357D51C330E; Wed, 21 Aug 2024 15:40:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724254849; cv=none; b=EdFqkFnCW+mj+Gikile0l0/EhdBCg5Br/nzAENJPwxwHvk6QgFjUbMXbwZCSkNZtI1oXce12UK6wKlnPbd6Tw5KhFmQu7sXUnKvbUesc46pQosdVKD8E/fCYyIN9uFjWqtLp1t0izyxTvUAKjYQut4iRv9PN7OZy9wQIa03dP2s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724254849; c=relaxed/simple; bh=hmDkcRmffdx2dEYCxN/tyZ+CbfHY6WKH0OsV4sTvbJo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=DGXvruSXxm94863NNkZpzb7lVMlCknS8CFkow9/F8Sqgi1Qlz1o5N2IOrxTEOTBDDYHcCw0+EJuuNdzWFbrS3AzewuT18jzbwSRAWYtqikf3aeXCK7g8ayNWFuhUa6G6bH2y2k8gG2l9OmdUwA02np1ny2hzI0E5KAqO0k/D1uY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E832C152B; Wed, 21 Aug 2024 08:41:13 -0700 (PDT) Received: from e122027.cambridge.arm.com (e122027.cambridge.arm.com [10.1.37.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 060793F73B; Wed, 21 Aug 2024 08:40:44 -0700 (PDT) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Joey Gouly , Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Gavin Shan , Shanker Donthineni , Alper Gun , Steven Price Subject: [PATCH v4 28/43] arm64: rme: support RSI_HOST_CALL Date: Wed, 21 Aug 2024 16:38:29 +0100 Message-Id: <20240821153844.60084-29-steven.price@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240821153844.60084-1-steven.price@arm.com> References: <20240821153844.60084-1-steven.price@arm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Joey Gouly Forward RSI_HOST_CALLS to KVM's HVC handler. Signed-off-by: Joey Gouly Signed-off-by: Steven Price --- arch/arm64/kvm/rme-exit.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/kvm/rme-exit.c b/arch/arm64/kvm/rme-exit.c index 03ed147f7926..0940575b0a14 100644 --- a/arch/arm64/kvm/rme-exit.c +++ b/arch/arm64/kvm/rme-exit.c @@ -117,6 +117,29 @@ static int rec_exit_ripas_change(struct kvm_vcpu *vcpu) return 0; } +static int rec_exit_host_call(struct kvm_vcpu *vcpu) +{ + int ret, i; + struct realm_rec *rec = &vcpu->arch.rec; + + vcpu->stat.hvc_exit_stat++; + + for (i = 0; i < REC_RUN_GPRS; i++) + vcpu_set_reg(vcpu, i, rec->run->exit.gprs[i]); + + ret = kvm_smccc_call_handler(vcpu); + + if (ret < 0) { + vcpu_set_reg(vcpu, 0, ~0UL); + ret = 1; + } + + for (i = 0; i < REC_RUN_GPRS; i++) + rec->run->enter.gprs[i] = vcpu_get_reg(vcpu, i); + + return ret; +} + static void update_arch_timer_irq_lines(struct kvm_vcpu *vcpu) { struct realm_rec *rec = &vcpu->arch.rec; @@ -178,6 +201,8 @@ int handle_rme_exit(struct kvm_vcpu *vcpu, int rec_run_ret) return rec_exit_psci(vcpu); case RMI_EXIT_RIPAS_CHANGE: return rec_exit_ripas_change(vcpu); + case RMI_EXIT_HOST_CALL: + return rec_exit_host_call(vcpu); } kvm_pr_unimpl("Unsupported exit reason: %u\n", -- 2.34.1