From nobody Mon Feb 9 19:37:34 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1562048692; cv=none; d=zoho.com; s=zohoarc; b=UhJiad8emBPSj3OTYcGB5SSYIgXUJCMoIMFGPM06TU5MTNuw6zj6XV2zBqjebo02tXps+jQ/mRpvasrj4mRrGLE8u36HqJf5f3wdOQsfYcKDY3Yv8E0hb8wilrBgGRZ65VOAm5WWOtmLdPwi4Uf1OTBddkoeH3PvkwkyrPo6ws4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1562048692; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=giAmJ0kYDtt07Lg9gIGUorD8WhGDGCHFfHYjtNa6Fig=; b=CNJsT+LjepqrUoZoKIuJZ2pj0nLEQR4C590MvHh8RxY7/3v2ZK6lLg8rVGeoIg8uGiXKNaOobYrkt6UaoxUzoLpiq4dcdyGBOG0BWVlsN9pEaXxhvVXi0YCU+oAbO9T/NUBUoxom/Se9oWp6HgYAP0pdVZMWwbuJeSNKW4LXc+8= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1562048682301699.97922804617; Mon, 1 Jul 2019 23:24:42 -0700 (PDT) Received: from localhost ([::1]:49464 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiCDZ-0001qS-2d for importer@patchew.org; Tue, 02 Jul 2019 02:24:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58454) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiByl-000514-GK for qemu-devel@nongnu.org; Tue, 02 Jul 2019 02:09:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hiByj-0002w3-TO for qemu-devel@nongnu.org; Tue, 02 Jul 2019 02:09:23 -0400 Received: from bilbo.ozlabs.org ([203.11.71.1]:49323 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hiByj-0002sv-5x; Tue, 02 Jul 2019 02:09:21 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 45dDMj59B1z9sPc; Tue, 2 Jul 2019 16:09:03 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1562047745; bh=XL9rUUuoMrbbedAD0CK7JXtj492z57BZhCOuHxR3UNQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NcC01rF03GK0dgXZjHJXcu6hlvEVss7YMsPpzNPSd2Tc8Vz4GFSGy1vG+EvN7UOaj NslDPrSvcu8VI3DsF1HmututNZ8C3KLRmAR1Nk8OuGPwDZX+TkpCNoM4DKsmAl04qB z8mQrE8K3kJGUw7Ex8NBtj4KJkgxcw4RN6IFgt/M= From: David Gibson To: peter.maydell@linaro.org Date: Tue, 2 Jul 2019 16:08:23 +1000 Message-Id: <20190702060857.3926-16-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190702060857.3926-1-david@gibson.dropbear.id.au> References: <20190702060857.3926-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 203.11.71.1 Subject: [Qemu-devel] [PULL 15/49] xics/spapr: Only emulated XICS should use RTAS/hypercalls emulation X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, David Gibson , rth@twiddle.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Greg Kurz Checking that we're not using the in-kernel XICS is ok with the "xics" interrupt controller mode, but it is definitely not enough with the other modes since the guest could be using XIVE. Ensure XIVE is not in use when emulated XICS RTAS/hypercalls are called. Signed-off-by: Greg Kurz Message-Id: <156077253666.424706.6104557911104491047.stgit@bahia.lan> Reviewed-by: C=C3=A9dric Le Goater Signed-off-by: David Gibson --- hw/intc/xics_spapr.c | 53 ++++++++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 26 deletions(-) diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c index 8d605b68a7..7cd3c93d71 100644 --- a/hw/intc/xics_spapr.c +++ b/hw/intc/xics_spapr.c @@ -41,22 +41,23 @@ * Guest interfaces */ =20 -static bool check_in_kernel_xics(const char *func) +static bool check_emulated_xics(SpaprMachineState *spapr, const char *func) { - if (kvm_irqchip_in_kernel()) { - error_report("pseries: %s must never be called for in-kernel XICS", + if (spapr_ovec_test(spapr->ov5_cas, OV5_XIVE_EXPLOIT) || + kvm_irqchip_in_kernel()) { + error_report("pseries: %s must only be called for emulated XICS", func); - return true; + return false; } =20 - return false; + return true; } =20 -#define CHECK_IN_KERNEL_XICS_HCALL \ - do { \ - if (check_in_kernel_xics(__func__)) { \ - return H_HARDWARE; \ - } \ +#define CHECK_EMULATED_XICS_HCALL(spapr) \ + do { \ + if (!check_emulated_xics((spapr), __func__)) { \ + return H_HARDWARE; \ + } \ } while (0) =20 static target_ulong h_cppr(PowerPCCPU *cpu, SpaprMachineState *spapr, @@ -64,7 +65,7 @@ static target_ulong h_cppr(PowerPCCPU *cpu, SpaprMachineS= tate *spapr, { target_ulong cppr =3D args[0]; =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 icp_set_cppr(spapr_cpu_state(cpu)->icp, cppr); return H_SUCCESS; @@ -76,7 +77,7 @@ static target_ulong h_ipi(PowerPCCPU *cpu, SpaprMachineSt= ate *spapr, target_ulong mfrr =3D args[1]; ICPState *icp =3D xics_icp_get(XICS_FABRIC(spapr), args[0]); =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 if (!icp) { return H_PARAMETER; @@ -91,7 +92,7 @@ static target_ulong h_xirr(PowerPCCPU *cpu, SpaprMachineS= tate *spapr, { uint32_t xirr =3D icp_accept(spapr_cpu_state(cpu)->icp); =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 args[0] =3D xirr; return H_SUCCESS; @@ -102,7 +103,7 @@ static target_ulong h_xirr_x(PowerPCCPU *cpu, SpaprMach= ineState *spapr, { uint32_t xirr =3D icp_accept(spapr_cpu_state(cpu)->icp); =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 args[0] =3D xirr; args[1] =3D cpu_get_host_ticks(); @@ -114,7 +115,7 @@ static target_ulong h_eoi(PowerPCCPU *cpu, SpaprMachine= State *spapr, { target_ulong xirr =3D args[0]; =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 icp_eoi(spapr_cpu_state(cpu)->icp, xirr); return H_SUCCESS; @@ -127,7 +128,7 @@ static target_ulong h_ipoll(PowerPCCPU *cpu, SpaprMachi= neState *spapr, uint32_t mfrr; uint32_t xirr; =20 - CHECK_IN_KERNEL_XICS_HCALL; + CHECK_EMULATED_XICS_HCALL(spapr); =20 if (!icp) { return H_PARAMETER; @@ -141,12 +142,12 @@ static target_ulong h_ipoll(PowerPCCPU *cpu, SpaprMac= hineState *spapr, return H_SUCCESS; } =20 -#define CHECK_IN_KERNEL_XICS_RTAS(rets) \ - do { \ - if (check_in_kernel_xics(__func__)) { \ - rtas_st((rets), 0, RTAS_OUT_HW_ERROR); \ - return; \ - } \ +#define CHECK_EMULATED_XICS_RTAS(spapr, rets) \ + do { \ + if (!check_emulated_xics((spapr), __func__)) { \ + rtas_st((rets), 0, RTAS_OUT_HW_ERROR); \ + return; \ + } \ } while (0) =20 static void rtas_set_xive(PowerPCCPU *cpu, SpaprMachineState *spapr, @@ -157,7 +158,7 @@ static void rtas_set_xive(PowerPCCPU *cpu, SpaprMachine= State *spapr, ICSState *ics =3D spapr->ics; uint32_t nr, srcno, server, priority; =20 - CHECK_IN_KERNEL_XICS_RTAS(rets); + CHECK_EMULATED_XICS_RTAS(spapr, rets); =20 if ((nargs !=3D 3) || (nret !=3D 1)) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); @@ -192,7 +193,7 @@ static void rtas_get_xive(PowerPCCPU *cpu, SpaprMachine= State *spapr, ICSState *ics =3D spapr->ics; uint32_t nr, srcno; =20 - CHECK_IN_KERNEL_XICS_RTAS(rets); + CHECK_EMULATED_XICS_RTAS(spapr, rets); =20 if ((nargs !=3D 1) || (nret !=3D 3)) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); @@ -224,7 +225,7 @@ static void rtas_int_off(PowerPCCPU *cpu, SpaprMachineS= tate *spapr, ICSState *ics =3D spapr->ics; uint32_t nr, srcno; =20 - CHECK_IN_KERNEL_XICS_RTAS(rets); + CHECK_EMULATED_XICS_RTAS(spapr, rets); =20 if ((nargs !=3D 1) || (nret !=3D 1)) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); @@ -257,7 +258,7 @@ static void rtas_int_on(PowerPCCPU *cpu, SpaprMachineSt= ate *spapr, ICSState *ics =3D spapr->ics; uint32_t nr, srcno; =20 - CHECK_IN_KERNEL_XICS_RTAS(rets); + CHECK_EMULATED_XICS_RTAS(spapr, rets); =20 if ((nargs !=3D 1) || (nret !=3D 1)) { rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); --=20 2.21.0