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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 C3568C433E9 for ; Tue, 2 Mar 2021 17:22:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A6B064F35 for ; Tue, 2 Mar 2021 17:22:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349699AbhCBRTX (ORCPT ); Tue, 2 Mar 2021 12:19:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1384504AbhCBPFT (ORCPT ); Tue, 2 Mar 2021 10:05:19 -0500 Received: from mail-wm1-x34a.google.com (mail-wm1-x34a.google.com [IPv6:2a00:1450:4864:20::34a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F5D5C0698C2 for ; Tue, 2 Mar 2021 07:00:39 -0800 (PST) Received: by mail-wm1-x34a.google.com with SMTP id s192so1311281wme.6 for ; Tue, 02 Mar 2021 07:00:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=84bkslXA7Qi7zlX0xHNbjR4XGFTrfSQqHB0l+SkjRTk=; b=aEyIjsz9Q39OmQlGKhPsdWMeCxwA+8gfzAIcUr3vtuH7vJkQ/TC8zCkBwOeeBT65tq UvSouJ8Birgm8kdd91FSgiyZCYROychF8+9Sg1dSYXCER9zOEopyAV4P/kgm4Ysxeidy 7ft7SR+/KlrHCJgsZMEZ51u1Cmk9vBYllJNwbmgZ1ompvmxQEqTIg6O0Ypw4YW+TiLNY Bdfy60xclmeqbqcp8GDWtDDVvsqYWew2CdzBsipN3fqfz7oI3broHa+hdFZwgg01rnPc IAtkChQhjHl8hf9R0x8GkU6smUb+gwabjgaL22vSTdg2PoB4sWRTIVOgQBrjdOfDE6Mh olZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=84bkslXA7Qi7zlX0xHNbjR4XGFTrfSQqHB0l+SkjRTk=; b=mBMSQIEi9mkkRl+jSaagfguDIEBLNRWW6iM6shqO+uXPTG0Prz/LjkoLimffwU4IPx qr+dMYQGofXjkuomyouwCuox5TIaZXDkIhbyQfaJJqw9fqJ7/SWPRMn6oUAb78qWH5VB XH0wok88ZA2NpnApI8gfCQwaKdjxR3ic7EqoPr2i7x0ToRUoB/QEf6npBQqiJQ7SSwYo Cxs6mS468i5hc3Lk3TwlnKVoi0+2DiXgOv+GsX6bka2UDs1UC9C6M1shplHQIxFybScj ivL3iLxx1eEDVoD6qdV0o2BLuOEuK9jvIKvN8IuHUQ3QKqLUgfpH7j0S+bmKHACE6Cs4 uqYA== X-Gm-Message-State: AOAM532gwnuvPssA+e8oQRFvQ57CFZdlgg1dgExm6O5FrO22Zh7mxQ0s 096qLoMJiJ37GKJcAzHYsOB2HBJP6QGl X-Google-Smtp-Source: ABdhPJwFUzBVYVUNUz65kgYHvUCXtvq4NXrt8gCrlNsOFSMTng7gs+AjbNDT7VknGe5P7PaLfd9Y7549RF9U Sender: "qperret via sendgmr" X-Received: from r2d2-qp.c.googlers.com ([fda3:e722:ac3:10:28:9cb1:c0a8:1652]) (user=qperret job=sendgmr) by 2002:a1c:2e90:: with SMTP id u138mr496527wmu.0.1614697237854; Tue, 02 Mar 2021 07:00:37 -0800 (PST) Date: Tue, 2 Mar 2021 14:59:44 +0000 In-Reply-To: <20210302150002.3685113-1-qperret@google.com> Message-Id: <20210302150002.3685113-15-qperret@google.com> Mime-Version: 1.0 References: <20210302150002.3685113-1-qperret@google.com> X-Mailer: git-send-email 2.30.1.766.gb4fecdf3b7-goog Subject: [PATCH v3 14/32] KVM: arm64: Factor out vector address calculation From: Quentin Perret To: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com Cc: android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, tabba@google.com, mark.rutland@arm.com, dbrazdil@google.com, mate.toth-pal@arm.com, seanjc@google.com, qperret@google.com, robh+dt@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to re-map the guest vectors at EL2 when pKVM is enabled, refactor __kvm_vector_slot2idx() and kvm_init_vector_slot() to move all the address calculation logic in a static inline function. Acked-by: Will Deacon Signed-off-by: Quentin Perret --- arch/arm64/include/asm/kvm_mmu.h | 8 ++++++++ arch/arm64/kvm/arm.c | 9 +-------- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index 90873851f677..5c42ec023cc7 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -168,6 +168,14 @@ phys_addr_t kvm_mmu_get_httbr(void); phys_addr_t kvm_get_idmap_vector(void); int kvm_mmu_init(void); +static inline void *__kvm_vector_slot2addr(void *base, + enum arm64_hyp_spectre_vector slot) +{ + int idx = slot - (slot != HYP_VECTOR_DIRECT); + + return base + (idx * SZ_2K); +} + struct kvm; #define kvm_flush_dcache_to_poc(a,l) __flush_dcache_area((a), (l)) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 3f8bcf8db036..26e573cdede3 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1345,16 +1345,9 @@ static unsigned long nvhe_percpu_order(void) /* A lookup table holding the hypervisor VA for each vector slot */ static void *hyp_spectre_vector_selector[BP_HARDEN_EL2_SLOTS]; -static int __kvm_vector_slot2idx(enum arm64_hyp_spectre_vector slot) -{ - return slot - (slot != HYP_VECTOR_DIRECT); -} - static void kvm_init_vector_slot(void *base, enum arm64_hyp_spectre_vector slot) { - int idx = __kvm_vector_slot2idx(slot); - - hyp_spectre_vector_selector[slot] = base + (idx * SZ_2K); + hyp_spectre_vector_selector[slot] = __kvm_vector_slot2addr(base, slot); } static int kvm_init_vector_slots(void) -- 2.30.1.766.gb4fecdf3b7-goog