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 E8BEB3B2B6; Mon, 12 Feb 2024 14:47:52 +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=1707749273; cv=none; b=hmcAoU5+30lnmUmFW/UBDb9+o0qlu3IGGKsWKhDbxXHPqKR+gg43m6x5YCJ0ChKt1un3pnE5ZYG0Af3fOAi9rVEJ5UzseiqfPvcfKUbpPu7iihQ5qPSGKbwOvQrW5sK/+O6wVaxLrdtLANAohfX8Ni0zstyD5ZSzK1JA1wV9BtE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707749273; c=relaxed/simple; bh=e/tWxSOkmw6htrhwgmxgeclP5tKG6yp5OWGwNwdixWg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=NzaDSJ/hqvYp62Tb6qXr5MF14krtnjCor9BToyhValp7qzb2d/sk6lqDiKnsoiPKYd1vG9TwJHFssjdR+MMMI1IO3dW1Bmxw57ttSSFxNZ7K29qfqS0SFQJfCAgc60x4TYHD35AY3T7kLh9qG6Fa6CQby/L0Lh5L54cIsFfAH/M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=be8tDfyA; 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="be8tDfyA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89688C433C7; Mon, 12 Feb 2024 14:47:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707749272; bh=e/tWxSOkmw6htrhwgmxgeclP5tKG6yp5OWGwNwdixWg=; h=From:To:Cc:Subject:Date:From; b=be8tDfyAPs4RBfXpCJMaVeDrEo0197DTqvmpTzQEEAkB0YjCl5Bkqgd5y134Ko+R1 IR8iNdRuQK+IQvLZMePTdfPp6iL4uevAYsMyHqSBRwlPUO6yqujzD3Zy7OAEcv0HI7 37ZExq41ciTRS8EzaYvAh4Qo72Vjj4VtkhM7sA4Ep7I5hvCf+FI3AEtwgirYxOHjhp oXuGAClU3zWE1oytTmTzDQaQKhueo6qhW+3T7CTMtDykNe5qEySBhltIfFgN3cbuTE mskMW/n7iwgZdwMtJcpGX8fFyKLsXRYVMeVAS/+2vPcYxZpyBLxdU3tQShXp1mgSE+ Z0YYEnIqcDDBA== 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 1rZXb4-002SFp-4p; Mon, 12 Feb 2024 14:47:50 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Catalin Marinas , Will Deacon , Marek Szyprowski Subject: [PATCH 0/2] ARM64: Fixes for FEAT_E2H0 handling Date: Mon, 12 Feb 2024 14:47:34 +0000 Message-Id: <20240212144736.1933112-1-maz@kernel.org> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, m.szyprowski@samsung.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false As the FEAT_E2H0 handling series has made it to -next, some of its shortcomings are becoming apparent: - A missing ID register in __read_sysreg_by_encoding() is causing CPU hotplug to explode (reported by Marek) - NV1 is getting advertised on HW that doesn't have FEAT_NV, which is fairly harmless, but still annoying These fixes should directly apply on the feat_e2h0 branch that Oliver has pushed to kvmarm/next. Marc Zyngier (2): arm64: cpufeatures: Add missing ID_AA64MMFR4_EL1 to __read_sysreg_by_encoding() arm64: cpufeatures: Only check for NV1 if NV is present arch/arm64/kernel/cpufeature.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) -- 2.39.2