From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F398FCA5FDE for ; Thu, 1 Oct 2026 22:07:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uvnZ0OjFgR11f2LC6cFgEePrdPVXvRkOeEjzH8YB4Ps=; b=Rj7KHKK5MHrGTHrLy9oc0Z4ZZ4 HJbBC/VNeCmfcvtDkykOTRdmPHDgJ83Ag2ZXT1/COYvBv7+ZztDh/ECr6qbhKnYE/ZwntnEjavoBu qOfo7X9LFj0GDzWbsBa2raoXMAFyONhlxKhERpMtWkVnlA/Nv72prrlPWJQNjdDT6SBtVLUD+TQgI jxxBYNu6s99sIFbUIvCPx813IHKkZVB8hh7d3kTMyljplj658GuBi5RXNOPHOMJ2Zo6QEae0IoNEm QiZDMdtaJot27LR2kSikOWTKm7ILNBwBua2pNCNN+lafIiH8Ar6UxcwpXNYfK1nZKl3JPaNs9WWX4 JNlYmnrg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCOvi-0000000AK8u-1lWN; Thu, 01 Oct 2026 22:07:06 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCOve-0000000AK6f-2m6P for linux-arm-kernel@lists.infradead.org; Thu, 01 Oct 2026 22:07:03 +0000 Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id ED74020B716C; Thu, 1 Oct 2026 15:06:08 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com ED74020B716C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1790892369; bh=uvnZ0OjFgR11f2LC6cFgEePrdPVXvRkOeEjzH8YB4Ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j+MR8HoDv1hDNZn7dGKEK4FxM0UyLhJcBGuPBlh0oeVq8Nf9XWVN0J0YFkLTDsFi2 X3pLj2x3hC1SPaIBKCY2y4sMJpEG6HzsALfZQkswJB/A9D7XvDiWnIzu6Y7HXM/PE1 xwejRyfE+sShtFvU8irW4xRqxJfKmpJEhJk5wakU= From: Kameron Carr To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, mhklinux@outlook.com Cc: catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, lpieralisi@kernel.org, sudeep.holla@kernel.org, arnd@arndb.de, thuth@redhat.com, linux-hyperv@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH v4 6/6] arm64: hyperv: Implement hv_is_isolation_supported() for CCA Realms Date: Thu, 1 Oct 2026 15:05:52 -0700 Message-ID: <20261001220552.1793471-7-kameroncarr@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20261001220552.1793471-1-kameroncarr@linux.microsoft.com> References: <20261001220552.1793471-1-kameroncarr@linux.microsoft.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_150702_725931_57B636B3 X-CRM114-Status: UNSURE ( 7.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Provide an arm64 implementation of hv_is_isolation_supported() that overrides the __weak default in drivers/hv/hv_common.c. The implementation deliberately does not depend on hv_is_hyperv_initialized() because hv_common_init() consults hv_is_isolation_supported() before hyperv_initialized is set. Reviewed-by: Michael Kelley Signed-off-by: Kameron Carr --- arch/arm64/hyperv/mshyperv.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c index 45ca8e2..c41188a 100644 --- a/arch/arm64/hyperv/mshyperv.c +++ b/arch/arm64/hyperv/mshyperv.c @@ -163,3 +163,8 @@ bool hv_isolation_type_cca(void) { return is_realm_world(); } + +bool hv_is_isolation_supported(void) +{ + return is_realm_world(); +} -- 2.45.4