From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4D86A472531; Tue, 21 Jul 2026 20:12:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784664724; cv=none; b=SI1JDsDmcVHOMBm/sKRVcf12kdRN9AkPp0JLxRefH8kvpJF1cGMFlUmibJEVZGC+O94Yzi9vZivyyf0hpPXgFzQgQ5o1tvjPXRhnFu0OKkkAWzBEHYcmykypreMEoq9mNXAvkIPp4qLxGhX7D6SGBTgUSVOQYUtE6TVHM9owS14= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784664724; c=relaxed/simple; bh=OgegJIAodpym/AYW4WR7zSTxosj4X8LUj+bOE7mpQgg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pw8JmHHjssk4qXfDHGEGJLXiszLB5T0Rs/seGAulYovNo8DTnbP11t2w5c50zf62Sp03PKIl5Fx3aF0xVC1zLaxdjjK72sO5O5JkpKVkU0ixMANZTgvb2yRqBA6FXWfIMM6Jx2FRNaHcILBxgHrhUfOV5WcjVfVekw8oms6RWwI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=nbMx/SN+; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="nbMx/SN+" Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id B572420B716E; Tue, 21 Jul 2026 13:11:50 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B572420B716E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1784664710; bh=SQu+X8yGMFJ886Y/6SkzpbvtTHqaWWFjdm8ySRmrIgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nbMx/SN+1OwJBtSN4jVHReLeoKxQfb25mw1vi2YN+4ZxgqcBN8E7WjYyd9g/i4+lS bHBvGZJOdfTgniOEWqSqeTzCZXyQaAHav6G3Gvgetz4DxwiEZXaGO3RGzP3shrdfks WNvEVPvKgbCHdP5Pf4Jf54mZhUo86iWMQ+qI5U2g= 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 v3 6/6] arm64: hyperv: Implement hv_is_isolation_supported() for CCA Realms Date: Tue, 21 Jul 2026 13:11:48 -0700 Message-ID: <20260721201148.1441143-7-kameroncarr@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260721201148.1441143-1-kameroncarr@linux.microsoft.com> References: <20260721201148.1441143-1-kameroncarr@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. 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 8519f694f2897..e28612255a970 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