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=-16.5 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,URIBL_BLOCKED,USER_AGENT_GIT 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 2B30AC433E0 for ; Wed, 3 Mar 2021 00:22:44 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9784064E58 for ; Wed, 3 Mar 2021 00:22:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9784064E58 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=soleen.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 99B8A8D0104; Tue, 2 Mar 2021 19:22:40 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 95A368D0101; Tue, 2 Mar 2021 19:22:40 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6361E8D0104; Tue, 2 Mar 2021 19:22:40 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0174.hostedemail.com [216.40.44.174]) by kanga.kvack.org (Postfix) with ESMTP id A9EC48D0101 for ; Tue, 2 Mar 2021 19:22:39 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 6BD581EFD for ; Wed, 3 Mar 2021 00:22:39 +0000 (UTC) X-FDA: 77876662038.24.D817DE7 Received: from mail-qt1-f169.google.com (mail-qt1-f169.google.com [209.85.160.169]) by imf09.hostedemail.com (Postfix) with ESMTP id 649796000104 for ; Wed, 3 Mar 2021 00:22:38 +0000 (UTC) Received: by mail-qt1-f169.google.com with SMTP id o1so11849773qta.13 for ; Tue, 02 Mar 2021 16:22:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=t5r+nQTDiOBjAcARZmxYD2C/XCnn3pF+1dbE/Rdt76g=; b=SwKTL4eCvkIvgxU6lGAV//PLN7/clkFuLLU3DXUzK1tQP8M45hnpri8l5cR3f1+Ylp sMpfdEfEz+Et5fTiJRblDRcFcdDME1BtQOImc3LBxmY2ee/EnHXeyesUtIl0vD64exx+ VcRzv+DTWT/hDHKT9/XTJeTMiBflR4d/CWf1PPm9mvSFV7yUEEIVgbmppDsdR6CWOocz V0blw/3FCGwiuLgjQvSQ/B5NmZjurWUX6kzX83Lt5n0pSVAHFZPPAh+CUnOKE143JiH9 EaWCHQ+48dXFnyzY6WGGo0svwQnyOB1kX9/+fl90p2Ln1YIFMmaJnFRL2kdEe5kov6l2 jBiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=t5r+nQTDiOBjAcARZmxYD2C/XCnn3pF+1dbE/Rdt76g=; b=tTB55aexR8WhUqI038V5ChC2clAsGZNcTdFX0rbxC1wF+Sx+f/FsX/u//MLu4/30jz FmnBJTcCBf4D/NTvsthtPClkY6R8t89iLFENc0dCTBSfr92zWQOIABM46Ftdv+ArFU6s tYaJlPTvXU9RDkgrKhhz+bVmWjnqvRwMsZGu6+/1ksVwubsvsGqkaKDfEI263FEU8e05 XFCggKWupEWf7MGtJuxSECaoM3ovPa4yblJRM+mjc83MreDbHbWlyeLltuVVDwWUQ6aI XSP68//gns55KsIPm5e3yrdw0XwRgILb9w1xB2/oSSjqHw8QrKZM+ozIsg7DHzm+jyPV n7bg== X-Gm-Message-State: AOAM531bzmO21HgKlrBQZDaW+k+NYHbK/m6GWfczv3bCA05DVrFLIq6L bkCQyVsRQo5S7bIMvVCvpyxzIg== X-Google-Smtp-Source: ABdhPJzO9otEd6iJTRYqtDhi+XwWHgyDvgnqwPpNWgOkK7byt0RQkwHr9BNXQF6YdGG3LDA/I4eZOQ== X-Received: by 2002:ac8:d44:: with SMTP id r4mr19942609qti.7.1614730958326; Tue, 02 Mar 2021 16:22:38 -0800 (PST) Received: from localhost.localdomain (c-73-69-118-222.hsd1.nh.comcast.net. [73.69.118.222]) by smtp.gmail.com with ESMTPSA id r3sm16690512qkm.129.2021.03.02.16.22.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Mar 2021 16:22:37 -0800 (PST) From: Pavel Tatashin To: pasha.tatashin@soleen.com, jmorris@namei.org, sashal@kernel.org, ebiederm@xmission.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, maz@kernel.org, james.morse@arm.com, vladimir.murzin@arm.com, matthias.bgg@gmail.com, linux-mm@kvack.org, mark.rutland@arm.com, steve.capper@arm.com, rfontana@redhat.com, tglx@linutronix.de, selindag@gmail.com, tyhicks@linux.microsoft.com Subject: [PATCH v12 04/17] arm64: kernel: add helper for booted at EL2 and not VHE Date: Tue, 2 Mar 2021 19:22:17 -0500 Message-Id: <20210303002230.1083176-5-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210303002230.1083176-1-pasha.tatashin@soleen.com> References: <20210303002230.1083176-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 649796000104 X-Stat-Signature: g5gyfrgqmi71s875z9hmc54qa3qxnwy6 Received-SPF: none (soleen.com>: No applicable sender policy available) receiver=imf09; identity=mailfrom; envelope-from=""; helo=mail-qt1-f169.google.com; client-ip=209.85.160.169 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614730958-820781 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Replace places that contain logic like this: is_hyp_mode_available() && !is_kernel_in_hyp_mode() With a dedicated boolean function is_hyp_callable(). This will be needed later in kexec in order to sooner switch back to EL2. Suggested-by: James Morse Signed-off-by: Pavel Tatashin --- arch/arm64/include/asm/virt.h | 5 +++++ arch/arm64/kernel/cpu-reset.h | 3 +-- arch/arm64/kernel/hibernate.c | 9 +++------ arch/arm64/kernel/sdei.c | 2 +- 4 files changed, 10 insertions(+), 9 deletions(-) diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.= h index 7379f35ae2c6..4216c8623538 100644 --- a/arch/arm64/include/asm/virt.h +++ b/arch/arm64/include/asm/virt.h @@ -128,6 +128,11 @@ static __always_inline bool is_protected_kvm_enabled= (void) return cpus_have_final_cap(ARM64_KVM_PROTECTED_MODE); } =20 +static inline bool is_hyp_callable(void) +{ + return is_hyp_mode_available() && !is_kernel_in_hyp_mode(); +} + #endif /* __ASSEMBLY__ */ =20 #endif /* ! __ASM__VIRT_H */ diff --git a/arch/arm64/kernel/cpu-reset.h b/arch/arm64/kernel/cpu-reset.= h index ed50e9587ad8..1922e7a690f8 100644 --- a/arch/arm64/kernel/cpu-reset.h +++ b/arch/arm64/kernel/cpu-reset.h @@ -20,8 +20,7 @@ static inline void __noreturn cpu_soft_restart(unsigned= long entry, { typeof(__cpu_soft_restart) *restart; =20 - unsigned long el2_switch =3D !is_kernel_in_hyp_mode() && - is_hyp_mode_available(); + unsigned long el2_switch =3D is_hyp_callable(); restart =3D (void *)__pa_symbol(__cpu_soft_restart); =20 cpu_install_idmap(); diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.= c index b1cef371df2b..c764574a1acb 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -48,9 +48,6 @@ */ extern int in_suspend; =20 -/* Do we need to reset el2? */ -#define el2_reset_needed() (is_hyp_mode_available() && !is_kernel_in_hyp= _mode()) - /* temporary el2 vectors in the __hibernate_exit_text section. */ extern char hibernate_el2_vectors[]; =20 @@ -125,7 +122,7 @@ int arch_hibernation_header_save(void *addr, unsigned= int max_size) hdr->reenter_kernel =3D _cpu_resume; =20 /* We can't use __hyp_get_vectors() because kvm may still be loaded */ - if (el2_reset_needed()) + if (is_hyp_callable()) hdr->__hyp_stub_vectors =3D __pa_symbol(__hyp_stub_vectors); else hdr->__hyp_stub_vectors =3D 0; @@ -387,7 +384,7 @@ int swsusp_arch_suspend(void) dcache_clean_range(__idmap_text_start, __idmap_text_end); =20 /* Clean kvm setup code to PoC? */ - if (el2_reset_needed()) { + if (is_hyp_callable()) { dcache_clean_range(__hyp_idmap_text_start, __hyp_idmap_text_end); dcache_clean_range(__hyp_text_start, __hyp_text_end); } @@ -482,7 +479,7 @@ int swsusp_arch_resume(void) * * We can skip this step if we booted at EL1, or are running with VHE. */ - if (el2_reset_needed()) { + if (is_hyp_callable()) { phys_addr_t el2_vectors =3D (phys_addr_t)hibernate_exit; el2_vectors +=3D hibernate_el2_vectors - __hibernate_exit_text_start; /* offset */ diff --git a/arch/arm64/kernel/sdei.c b/arch/arm64/kernel/sdei.c index 2c7ca449dd51..af0ac2f920cf 100644 --- a/arch/arm64/kernel/sdei.c +++ b/arch/arm64/kernel/sdei.c @@ -200,7 +200,7 @@ unsigned long sdei_arch_get_entry_point(int conduit) * dropped to EL1 because we don't support VHE, then we can't support * SDEI. */ - if (is_hyp_mode_available() && !is_kernel_in_hyp_mode()) { + if (is_hyp_callable()) { pr_err("Not supported on this hardware/boot configuration\n"); goto out_err; } --=20 2.25.1