From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E1EF18CC12; Tue, 8 Oct 2024 12:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728389134; cv=none; b=BX0UUzX0aMXoVl/QjEX3pWdl+iNJjO8ucAJp9LhY8ZJSgbd6bW2p8kiefaNgN3F7W2q8LLO/VWdRHeDMI+Dk8L0fqNjBgKWgvi1LkeZdFZDzrWiV/wv0KPBturwp2yf4NpAqp+LQ6bv8+ToiEkL9aZzWbiAXbiuTlBnsi1YSznw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728389134; c=relaxed/simple; bh=FzhG8txh91SiqhRWcLB+yGiyTCgay6J723Fzbpcn0Mw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=AzYSxqbHvHd93bq5pgWii6c8Sm7c+oAbJLVkAxpVmgHm5AGpuoLmH2O1ElugjPmPQLUOjv2N9oxuQuhu42JTT4xgN170m84fJcXoctjN7I78oYGqI30TKaFn2fes6J9O+ZHmo9s1odBKMvGyGSIwz4yc6jC1/AcVvC3StkPkYkI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NpPskTmB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NpPskTmB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8591BC4CECC; Tue, 8 Oct 2024 12:05:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728389133; bh=FzhG8txh91SiqhRWcLB+yGiyTCgay6J723Fzbpcn0Mw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NpPskTmBfRKZiyq8Mo4xXyPH7B1kuBMml08LHWtJ7rZ4Ncxwv/0cIFPvuYNvW5tqs ydMVUBs7RAPefxcWtVnTnAlQyu3RvTHhWajB41e4StvfaHzMFze1AoVeYonSSv6DvR 2QxLudM78ZJr4TjX9jSh4i0s9T7FhCd+CwnZTkUE04VjLf6vxHrVcob/KWJKhkJ5pX Sld+gAV5S/TafFm0KKE0eXrkN8VlrP0exJvp8l1+GrU3Ud6x/90qKpAPeIV64S9crk lNjhRxCiYJS1G7SwtMqnvG1lHMi2e+oyEGi2SM308B8eGlV4B9pzm9X+1hT9f/6W0V FSkMScWUe2vGg== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1sy8y3-001LZr-Aa; Tue, 08 Oct 2024 13:05:31 +0100 From: Marc Zyngier To: Oliver Upton , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon , Joey Gouly , Mark Brown Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] KVM: arm64: Expose S1PIE to guests Date: Tue, 8 Oct 2024 13:05:06 +0100 Message-Id: <172838909377.2973199.1800004411282271028.b4-ty@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241005-kvm-arm64-fix-s1pie-v1-1-5901f02de749@kernel.org> References: <20241005-kvm-arm64-fix-s1pie-v1-1-5901f02de749@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: oliver.upton@linux.dev, james.morse@arm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org, joey.gouly@arm.com, broonie@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Sat, 05 Oct 2024 00:19:37 +0100, Mark Brown wrote: > Prior to commit 70ed7238297f ("KVM: arm64: Sanitise ID_AA64MMFR3_EL1") > we just exposed the santised view of ID_AA64MMFR3_EL1 to guests, meaning > that they saw both TCRX and S1PIE if present on the host machine. That > commit added VMM control over the contents of the register and exposed > S1POE but removed S1PIE, meaning that the extension is no longer visible > to guests. Reenable support for S1PIE with VMM control. > > [...] Applied to fixes, thanks! [1/1] KVM: arm64: Expose S1PIE to guests commit: d4a89e5aee23eaebdc45f63cb3d6d5917ff6acf4 Cheers, M. -- Without deviation from the norm, progress is not possible.