From patchwork Wed Jul 31 19:40:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 13749125 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 38FE816CD25; Wed, 31 Jul 2024 19:40:58 +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=1722454858; cv=none; b=jwCznpKre2QrH2BxrUQLabg0wGFvaCynlWs9Jw5+mI2kDBi0Q6XFX5pI3EQMM2rxyHGA2ufI2URt4gVNEhVEGnPbVNmbQy1DiqDgiM9rq6lnUQqRW0UyDzJIqzY+u17Jjs7YFJxlMAtRAFHDD3p0l+9Pk4vjQEsOHLdjWweftig= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722454858; c=relaxed/simple; bh=TuS/6cRtmtNveKfMTQt2TRlXalUYKcoPDKFjEDaud+I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=lNiaNWltI8G+yOaUOMcH3Q+qRn6DXuFThg44scXcEawZZ8bGuq9n/Jinr8iJg0/h77okpUpGTvn+fFdjMShpf0Nw85HGlGKPXHzWwF5JitcoOajc5gFwMABzzxtyExKA1G/6wkwd+wYXxa2QC4QZCjbk4FtTgccinmYie8hdlw4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hvvfd4YV; 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="Hvvfd4YV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18587C4AF14; Wed, 31 Jul 2024 19:40:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722454858; bh=TuS/6cRtmtNveKfMTQt2TRlXalUYKcoPDKFjEDaud+I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hvvfd4YV6du0eH03O769DPR6FeCCM2j6X6kIWBwGDklQ8HoyM5LUMWCEFYtnebhQ1 uKhsp4pDF+ldrCCgFC7r4aQXUenmA52NQ0UXabJN6EMIDIvCSv/fJ81sfVvg4U+9dJ SGaeOtxRsgY76lLv/NojIc+Rez55sPpMnA+YYe9SOwzQiG6OPLoRctsHaVPAFokTiI IDUGEaOB3h9AVgizBKW+l2dsedh4Y71DdvvV8YOi00HQVcXyaZ/mWQ4d9pC51h2R0I lfP2vozglPm08kjy8KxVnqljoArHz9qE+W3Y11sSTYW9q4alqXW8FAa/kzSbwWipP5 4JcWXorBELjYg== 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 1sZFBw-00H6Gh-CR; Wed, 31 Jul 2024 20:40:56 +0100 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 , Joey Gouly , Alexandru Elisei , Anshuman Khandual , Przemyslaw Gaj Subject: [PATCH v2 16/17] KVM: arm64: nv: Plumb handling of AT S1* traps from EL2 Date: Wed, 31 Jul 2024 20:40:29 +0100 Message-Id: <20240731194030.1991237-17-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240731194030.1991237-1-maz@kernel.org> References: <20240731194030.1991237-1-maz@kernel.org> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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, joey.gouly@arm.com, alexandru.elisei@arm.com, anshuman.khandual@arm.com, pgaj@cadence.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Hooray, we're done. Plug the AT traps into the system instruction table, and let it rip. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 45 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index e7e5e0df119e..9f3cf82e5231 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2803,6 +2803,36 @@ static const struct sys_reg_desc sys_reg_descs[] = { EL2_REG(SP_EL2, NULL, reset_unknown, 0), }; +static bool handle_at_s1e01(struct kvm_vcpu *vcpu, struct sys_reg_params *p, + const struct sys_reg_desc *r) +{ + u32 op = sys_insn(p->Op0, p->Op1, p->CRn, p->CRm, p->Op2); + + __kvm_at_s1e01(vcpu, op, p->regval); + + return true; +} + +static bool handle_at_s1e2(struct kvm_vcpu *vcpu, struct sys_reg_params *p, + const struct sys_reg_desc *r) +{ + u32 op = sys_insn(p->Op0, p->Op1, p->CRn, p->CRm, p->Op2); + + __kvm_at_s1e2(vcpu, op, p->regval); + + return true; +} + +static bool handle_at_s12(struct kvm_vcpu *vcpu, struct sys_reg_params *p, + const struct sys_reg_desc *r) +{ + u32 op = sys_insn(p->Op0, p->Op1, p->CRn, p->CRm, p->Op2); + + __kvm_at_s12(vcpu, op, p->regval); + + return true; +} + static bool kvm_supported_tlbi_s12_op(struct kvm_vcpu *vpcu, u32 instr) { struct kvm *kvm = vpcu->kvm; @@ -3065,6 +3095,14 @@ static struct sys_reg_desc sys_insn_descs[] = { { SYS_DESC(SYS_DC_ISW), access_dcsw }, { SYS_DESC(SYS_DC_IGSW), access_dcgsw }, { SYS_DESC(SYS_DC_IGDSW), access_dcgsw }, + + SYS_INSN(AT_S1E1R, handle_at_s1e01), + SYS_INSN(AT_S1E1W, handle_at_s1e01), + SYS_INSN(AT_S1E0R, handle_at_s1e01), + SYS_INSN(AT_S1E0W, handle_at_s1e01), + SYS_INSN(AT_S1E1RP, handle_at_s1e01), + SYS_INSN(AT_S1E1WP, handle_at_s1e01), + { SYS_DESC(SYS_DC_CSW), access_dcsw }, { SYS_DESC(SYS_DC_CGSW), access_dcgsw }, { SYS_DESC(SYS_DC_CGDSW), access_dcgsw }, @@ -3144,6 +3182,13 @@ static struct sys_reg_desc sys_insn_descs[] = { SYS_INSN(TLBI_VALE1NXS, handle_tlbi_el1), SYS_INSN(TLBI_VAALE1NXS, handle_tlbi_el1), + SYS_INSN(AT_S1E2R, handle_at_s1e2), + SYS_INSN(AT_S1E2W, handle_at_s1e2), + SYS_INSN(AT_S12E1R, handle_at_s12), + SYS_INSN(AT_S12E1W, handle_at_s12), + SYS_INSN(AT_S12E0R, handle_at_s12), + SYS_INSN(AT_S12E0W, handle_at_s12), + SYS_INSN(TLBI_IPAS2E1IS, handle_ipas2e1is), SYS_INSN(TLBI_RIPAS2E1IS, handle_ripas2e1is), SYS_INSN(TLBI_IPAS2LE1IS, handle_ipas2e1is),