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 326EF247290; Mon, 14 Jul 2025 12:26:43 +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=1752496004; cv=none; b=BCeZbiFEYR7MQgJUCmsKVxdq/J6xnQYp3cxFQ3Ltfy0rof15aXdy0Wqiq14dFJm+31/cfPs9heBS18r6KtLi1UcZ1Nm/owya6mFyQqlxlsv+TV3GnFY0AAoUMwLP04AwJsj925OK/gmVXxUVKAnzCfhfM6BXkcuVYv+O+EZ1vHM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752496004; c=relaxed/simple; bh=XJ3TrLkRrj+mRM4a05rezAW0AfRDUsAnmqyYGIp/zo4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=PRRrvdyBOVQK9SbAijzv8m8Rzrbe1/cMGWWJKBY9sBK0hBtWPzOT/aUb+Oz/cRYEh/DUeA00/nmse7zcvlHnD/HSrTE4utQshLK0CxGRfr8ZUuNUoHKhH7ajU2F+AzkAM+SzfbkIWFI6WWgxLZ1dlBP0MqWzNp3sPoBoE/DAtzE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VGf8nvMI; 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="VGf8nvMI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B829CC4CEF4; Mon, 14 Jul 2025 12:26:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752496003; bh=XJ3TrLkRrj+mRM4a05rezAW0AfRDUsAnmqyYGIp/zo4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VGf8nvMIT1Y+ULXRFOQtOVCAZOMDYpRBBzwunh1brBIxQr77cyJ4kREqBg7KuS6wu 539OvS8hhG5l95dNZrOSg3lOfITd/XOmbkcmwGe/Do30+83JWcYJsHdXe3luBFxoUm MarVEmngnl9xHyuaATBqH2wUvjq5nujk0rxU4QcpCD4CW4sBeKi9CQg0c79P5Mf03z puoFhUXFbnKn13feK61ypmFBF4pgTB+ST8X13RBA8t8P+DNZpbnJPNanSqhgpHOMun LSVnWKUlbL+2R8utE1JiQ1aGf8g52kjey7wWD9BcNrc7ZiRhAoPudw4z761nH8k+9L BEtTiFkx0GdZw== 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 1ubIGX-00FW7V-Qh; Mon, 14 Jul 2025 13:26:41 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Eric Auger , Peter Maydell Subject: [PATCH 01/11] KVM: arm64: Make RVBAR_EL2 accesses UNDEF Date: Mon, 14 Jul 2025 13:26:24 +0100 Message-Id: <20250714122634.3334816-2-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250714122634.3334816-1-maz@kernel.org> References: <20250714122634.3334816-1-maz@kernel.org> 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, joey.gouly@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, eric.auger@redhat.com, peter.maydell@linaro.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false We always expose a virtual CPU that has EL3 when NV is enabled, irrespective of EL3 being actually implemented in HW. Therefore, as per the architecture, RVBAR_EL2 must UNDEF, since EL2 is not the highest implemented exception level. This is consistent with RMR_EL2 also triggering an UNDEF. Adjust the handling of RVBAR_EL2 accordingly. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 76c2f0da821f8..3f226cd5b502e 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -108,7 +108,6 @@ static bool get_el2_to_el1_mapping(unsigned int reg, PURE_EL2_SYSREG( HACR_EL2 ); PURE_EL2_SYSREG( VTTBR_EL2 ); PURE_EL2_SYSREG( VTCR_EL2 ); - PURE_EL2_SYSREG( RVBAR_EL2 ); PURE_EL2_SYSREG( TPIDR_EL2 ); PURE_EL2_SYSREG( HPFAR_EL2 ); PURE_EL2_SYSREG( HCRX_EL2 ); @@ -3370,7 +3369,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_MPAMVPM7_EL2), undef_access }, EL2_REG(VBAR_EL2, access_rw, reset_val, 0), - EL2_REG(RVBAR_EL2, access_rw, reset_val, 0), + { SYS_DESC(SYS_RVBAR_EL2), undef_access }, { SYS_DESC(SYS_RMR_EL2), undef_access }, EL2_REG_VNCR(ICH_AP0R0_EL2, reset_val, 0), -- 2.39.2