From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794064381; b=LBS8NRQFv30XLIsBMYWZ6FP8jnlSh6zUiTlFHTzBAoZzLyHt16NC4mn+Ve1DM5SLvc+d Z6ecgw1D57AGOZJpZkxdtgdbuwL/PqdrGL+cXkNrLgbBMfA88dZj14tWYgEbSWgSeHh9p x9Xi9apxDM5EeGOqXZ6xBN+rFMBW9/4nMmfj66e1j6MD6iRRqml+qVHaA4HLVlzd32oy6 BkugzxRXhs3ndTyTBOZpD4NLlneH0fWr/AJo8kVY5I4y0r3mJPKd+Z+dptiiur/JzH7Ve hkKfaaHC6jXs2xBtY8zyvkIlmfQ7F51FHktKnqE76SjWaKwKJB6IE62kN0TKpz6/sgw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064381; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=WanRMcD8w8o1wl7mf+yo0gqk7dZw6YZF38rOCfjUx7M=; b=OMxozgx6aWUtS58Z6MwB6ChRvfoRs2fDlQxL4+vBQ1HG2vcZA6YhJT/tYKUwenq5WQSz wMYQtV4i4X1kH6gUgqTwSx2kUz5Gi0Y6V06CjDbERawoimI07jqSLD7qRw44exwlwtkoE eZOZbtzbD7J6KlX6SkxglqGt4l4xkaCgsLhP47O5DasD1s8wUuxQZYb5zmlMNI3Gma4Xz SGHdjbGszUqfHukTuO3h5cVgYQko0ZttE1hk7yMShrFXgRXTdx5waQwfJfDvadvbE6zqI 99OE9AJbFbFxOOsMBGkklT7BYZ85XAnoQbjp+FYIk3GVlJ6T8ebbLYdDY9aqWiKrOng== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=1cKZH32o; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0FA01606D811; Sat, 7 Nov 2026 15:13:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=1cKZH32o Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1CDE1F008A3; Sat, 7 Nov 2026 15:13:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064380; bh=WanRMcD8w8o1wl7mf+yo0gqk7dZw6YZF38rOCfjUx7M=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=1cKZH32oKasYYcFZ7j4yRoUzv91P3KSWacQQK44+N2mj47IdFf6Lo19XRmi1L2aTi Lsy7PdkloX4UQbuh6MK9VCAWJJEqgzcWdXPSSqN+n1lzo3WqivpPaLUx4HxfjChscV /frOX2DnK/R6qka/0IEAMenD5A8bqMagdtF8pO+U= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Vincent Donnefort , Fuad Tabba , Fuad Tabba , Marc Zyngier , Sasha Levin Subject: [PATCH 7.3 0422/1257] KVM: arm64: Fix MMFR0 TGRAN advertisement for pVMs Date: Sat, 7 Nov 2026 08:45:18 -0500 Message-ID: <20261107134951.155738193@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vincent Donnefort [ Upstream commit 6c29285e78b5e4811145ebda382ac0ba732ce56a ] Protected VM ID register emulation leaves unlisted fields at 0. This creates two issues for TGRAN: * TGRAN16: 0 means non-implemented. It prevents 16KB protected VMs from booting even when the hardware supports it. * TGRAN4|TGRAN64: 0 means implemented. This may falsely advertise the feature even when the hardware does not support it. Advertise all the TGRAN fields in pvmid_aa64mmfr0 so that the hardware support is properly propagated. Cc: stable@vger.kernel.org Fixes: 6c30bfb18d0b ("KVM: arm64: Add handlers for protected VM System Registers") Signed-off-by: Vincent Donnefort Tested-by: Fuad Tabba Reviewed-by: Fuad Tabba Tested-by: Fuad Tabba Reviewed-by: Fuad Tabba Link: https://patch.msgid.link/20260928095454.3255918-2-vdonnefort@google.com Signed-off-by: Marc Zyngier Signed-off-by: Sasha Levin --- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index 8758c68017765..ec469d96516a5 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -121,6 +121,9 @@ static const struct pvm_ftr_bits pvmid_aa64mmfr0[] = { MAX_FEAT(ID_AA64MMFR0_EL1, SNSMEM, IMP), MAX_FEAT(ID_AA64MMFR0_EL1, BIGENDEL0, IMP), MAX_FEAT(ID_AA64MMFR0_EL1, EXS, IMP), + MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN4, IMP), + MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN16, IMP), + MAX_FEAT(ID_AA64MMFR0_EL1, TGRAN64, IMP), FEAT_END }; -- 2.53.0