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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39428C433C1 for ; Tue, 23 Mar 2021 02:36:27 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3468B619A9 for ; Tue, 23 Mar 2021 02:36:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3468B619A9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4F4FqX3zglz30gk for ; Tue, 23 Mar 2021 13:36:24 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.a=rsa-sha256 header.s=201602 header.b=Esf5Frie; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org (client-ip=203.11.71.1; helo=ozlabs.org; envelope-from=dgibson@ozlabs.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.a=rsa-sha256 header.s=201602 header.b=Esf5Frie; dkim-atps=neutral Received: from ozlabs.org (ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4F4Fq419XSz30Bp for ; Tue, 23 Mar 2021 13:35:59 +1100 (AEDT) Received: by ozlabs.org (Postfix, from userid 1007) id 4F4Fq30dTwz9sW4; Tue, 23 Mar 2021 13:35:59 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1616466959; bh=aIuuvymdi0TVzASxL/UJIQ31bE22tiQ2QrDrSDMOOWc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Esf5FriergMN/ijUKXtJg2IAxOEOC2sYKYuHOwFk+vETVAXVjovCek28OkuPm3Q9/ RbS6c1sRnmulnNKoPInlNcmWDNLZTL8O5DsGXZVRwzvV/zCyMCqPsywbtXBF7SrF2h mzbviKhKdCHcwBseyMU2Xs6o5pTi9jXoKtRFR1/c= Date: Tue, 23 Mar 2021 13:35:53 +1100 From: David Gibson To: Bharata B Rao Subject: Re: [PATCH v6 6/6] KVM: PPC: Book3S HV: Use H_RPT_INVALIDATE in nested KVM Message-ID: References: <20210311083939.595568-1-bharata@linux.ibm.com> <20210311083939.595568-7-bharata@linux.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="nNWWeyy0OjAtXMD1" Content-Disposition: inline In-Reply-To: <20210311083939.595568-7-bharata@linux.ibm.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: farosas@linux.ibm.com, aneesh.kumar@linux.ibm.com, npiggin@gmail.com, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --nNWWeyy0OjAtXMD1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 11, 2021 at 02:09:39PM +0530, Bharata B Rao wrote: > In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall > H_RPT_INVALIDATE if available. The availability of this hcall > is determined from "hcall-rpt-invalidate" string in ibm,hypertas-functions > DT property. >=20 > Signed-off-by: Bharata B Rao > Reviewed-by: Fabiano Rosas Reviewed-by: David Gibson > --- > arch/powerpc/kvm/book3s_64_mmu_radix.c | 27 +++++++++++++++++++++----- > arch/powerpc/kvm/book3s_hv_nested.c | 12 ++++++++++-- > 2 files changed, 32 insertions(+), 7 deletions(-) >=20 > diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/bo= ok3s_64_mmu_radix.c > index e603de7ade52..1e1e55fd0ee5 100644 > --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c > +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c > @@ -21,6 +21,7 @@ > #include > #include > #include > +#include > =20 > /* > * Supported radix tree geometry. > @@ -318,9 +319,19 @@ void kvmppc_radix_tlbie_page(struct kvm *kvm, unsign= ed long addr, > } > =20 > psi =3D shift_to_mmu_psize(pshift); > - rb =3D addr | (mmu_get_ap(psi) << PPC_BITLSHIFT(58)); > - rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(0, 0, 1), > - lpid, rb); > + > + if (!firmware_has_feature(FW_FEATURE_RPT_INVALIDATE)) { > + rb =3D addr | (mmu_get_ap(psi) << PPC_BITLSHIFT(58)); > + rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(0, 0, 1), > + lpid, rb); > + } else { > + rc =3D pseries_rpt_invalidate(lpid, H_RPTI_TARGET_CMMU, > + H_RPTI_TYPE_NESTED | > + H_RPTI_TYPE_TLB, > + psize_to_rpti_pgsize(psi), > + addr, addr + psize); > + } > + > if (rc) > pr_err("KVM: TLB page invalidation hcall failed, rc=3D%ld\n", rc); > } > @@ -334,8 +345,14 @@ static void kvmppc_radix_flush_pwc(struct kvm *kvm, = unsigned int lpid) > return; > } > =20 > - rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(1, 0, 1), > - lpid, TLBIEL_INVAL_SET_LPID); > + if (!firmware_has_feature(FW_FEATURE_RPT_INVALIDATE)) > + rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(1, 0, 1), > + lpid, TLBIEL_INVAL_SET_LPID); > + else > + rc =3D pseries_rpt_invalidate(lpid, H_RPTI_TARGET_CMMU, > + H_RPTI_TYPE_NESTED | > + H_RPTI_TYPE_PWC, H_RPTI_PAGE_ALL, > + 0, -1UL); > if (rc) > pr_err("KVM: TLB PWC invalidation hcall failed, rc=3D%ld\n", rc); > } > diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3= s_hv_nested.c > index adcc8e26ef22..5601b7eb9b89 100644 > --- a/arch/powerpc/kvm/book3s_hv_nested.c > +++ b/arch/powerpc/kvm/book3s_hv_nested.c > @@ -19,6 +19,7 @@ > #include > #include > #include > +#include > =20 > static struct patb_entry *pseries_partition_tb; > =20 > @@ -444,8 +445,15 @@ static void kvmhv_flush_lpid(unsigned int lpid) > return; > } > =20 > - rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(2, 0, 1), > - lpid, TLBIEL_INVAL_SET_LPID); > + if (!firmware_has_feature(FW_FEATURE_RPT_INVALIDATE)) > + rc =3D plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(2, 0, 1), > + lpid, TLBIEL_INVAL_SET_LPID); > + else > + rc =3D pseries_rpt_invalidate(lpid, H_RPTI_TARGET_CMMU, > + H_RPTI_TYPE_NESTED | > + H_RPTI_TYPE_TLB | H_RPTI_TYPE_PWC | > + H_RPTI_TYPE_PAT, > + H_RPTI_PAGE_ALL, 0, -1UL); > if (rc) > pr_err("KVM: TLB LPID invalidation hcall failed, rc=3D%ld\n", rc); > } --=20 David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. 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