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 0F54FCF8860 for ; Thu, 20 Nov 2025 13:32:36 +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=UvsnOCyzN4LpczEh4//zPJYkbcLLNoJ6YTsG55obw4U=; b=UsMt1FzPzUGAhUjn3VxfsUrnwS 4DQUFdcPe7ZEuArnyv7BylDBg18izZiPdYaR8kEupC3x0lRwiww2HXsPh2W1BtN/u+CO9a+83f4OQ 8CBEY8SIziv4YpEjZbpIKC2U9SwK/BfZoaiGThVoNCBzs2ZdqpALvwD00DsmSCeTYdKMPBdFwQmJp ZXm8gEvExzT7vUAmrLMSQZXw6Mvu3KnajjnGYf1wsDitti93NnpODhjda5YoR6Sw9MuOIbp7vc+8n dHduHn4nH6KuTiQFX/4frtH+Tb8iuA5MPO03GuL1129cTnCEsZmxELDFA0CXYVuXOJePXrP3wVCf1 Yl+msHcA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vM4lr-00000006jW3-24p9; Thu, 20 Nov 2025 13:32:23 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vM4lp-00000006jUI-0v4E for linux-arm-kernel@lists.infradead.org; Thu, 20 Nov 2025 13:32:22 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 2E9B9443BA; Thu, 20 Nov 2025 13:32:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0D2ACC113D0; Thu, 20 Nov 2025 13:32:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763645540; bh=wlKEE5GiVsbHV+gUnHjwyZRW7fH0p33E9YQIzRx9NlI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Wyxl4vDfAT0G8/LxgrZQ7tG4LrFLc0D54CBGU+1wS5g78GSsQzxkwcYmDoVqx8YfJ 9cnC/M5k/hXFt1wz+WmYCd+aGr5NFGKRav2ebLMnXfdFR71hhxP7ek/fELzYFalGzm CLLcKLZ1qeg0LZ3SCJMmXQRl7uo+z+Wb/NmbxecWYwdNf2G8ufXpcXcWu5eFLna03W 77LCDi3aL7st132vInX9xQWCsEHt5rIsJZlRCa7EjjAOUMBBOiMwkFrt0WtZiKjdPl PwOQ9MRL++gADNhykU+Av5PWUnvqBSJ8RfPIpC0Z3GF+n4Df1u1OiUCPGyvM+hesCL PfDGup1vyZPrA== 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 4.98.2) (envelope-from ) id 1vM4ll-00000006tUG-45LY; Thu, 20 Nov 2025 13:32:18 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH 1/5] KVM: arm64: Add routing/handling for GMID_EL1 Date: Thu, 20 Nov 2025 13:31:58 +0000 Message-ID: <20251120133202.2037803-2-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251120133202.2037803-1-maz@kernel.org> References: <20251120133202.2037803-1-maz@kernel.org> 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, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oupton@kernel.org, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251120_053221_297218_1F9AFB56 X-CRM114-Status: GOOD ( 12.14 ) 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 HCR_EL2.TID5 is currently ignored by the trap routing infrastructure, and we currently don't handle GMID_EL1 either (the only register trapped by TID5). Wire both the trap bit and a default UNDEF handler. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/emulate-nested.c | 8 ++++++++ arch/arm64/kvm/sys_regs.c | 1 + 2 files changed, 9 insertions(+) diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c index 834f13fb1fb7d..616eb6ad68701 100644 --- a/arch/arm64/kvm/emulate-nested.c +++ b/arch/arm64/kvm/emulate-nested.c @@ -70,6 +70,7 @@ enum cgt_group_id { CGT_HCR_ENSCXT, CGT_HCR_TTLBIS, CGT_HCR_TTLBOS, + CGT_HCR_TID5, CGT_MDCR_TPMCR, CGT_MDCR_TPM, @@ -308,6 +309,12 @@ static const struct trap_bits coarse_trap_bits[] = { .mask = HCR_TTLBOS, .behaviour = BEHAVE_FORWARD_RW, }, + [CGT_HCR_TID5] = { + .index = HCR_EL2, + .value = HCR_TID5, + .mask = HCR_TID5, + .behaviour = BEHAVE_FORWARD_RW, + }, [CGT_MDCR_TPMCR] = { .index = MDCR_EL2, .value = MDCR_EL2_TPMCR, @@ -665,6 +672,7 @@ static const struct encoding_to_trap_config encoding_to_cgt[] __initconst = { SR_TRAP(SYS_CCSIDR2_EL1, CGT_HCR_TID2_TID4), SR_TRAP(SYS_CLIDR_EL1, CGT_HCR_TID2_TID4), SR_TRAP(SYS_CSSELR_EL1, CGT_HCR_TID2_TID4), + SR_TRAP(SYS_GMID_EL1, CGT_HCR_TID5), SR_RANGE_TRAP(SYS_ID_PFR0_EL1, sys_reg(3, 0, 0, 7, 7), CGT_HCR_TID3), SR_TRAP(SYS_ICC_SGI0R_EL1, CGT_HCR_IMO_FMO_ICH_HCR_TC), diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index e67eb39ddc118..84e6f04220589 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -3397,6 +3397,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_CLIDR_EL1), access_clidr, reset_clidr, CLIDR_EL1, .set_user = set_clidr, .val = ~CLIDR_EL1_RES0 }, { SYS_DESC(SYS_CCSIDR2_EL1), undef_access }, + { SYS_DESC(SYS_GMID_EL1), undef_access }, { SYS_DESC(SYS_SMIDR_EL1), undef_access }, IMPLEMENTATION_ID(AIDR_EL1, GENMASK_ULL(63, 0)), { SYS_DESC(SYS_CSSELR_EL1), access_csselr, reset_unknown, CSSELR_EL1 }, -- 2.47.3