From patchwork Fri Sep 24 12:53:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fuad Tabba X-Patchwork-Id: 12515449 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=unavailable 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 64478C433F5 for ; Fri, 24 Sep 2021 13:24:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DA3361076 for ; Fri, 24 Sep 2021 13:24:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345963AbhIXNZp (ORCPT ); Fri, 24 Sep 2021 09:25:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346079AbhIXNZB (ORCPT ); Fri, 24 Sep 2021 09:25:01 -0400 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7A43C0612AB for ; Fri, 24 Sep 2021 05:54:50 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id e8-20020a0cf348000000b0037a350958f2so30929693qvm.7 for ; Fri, 24 Sep 2021 05:54:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=ah9gXDd6fJvOzz9kx2O2leuWRmK2UF+FaL+3WFxvTJ8=; b=VWQcPIt1vlcNarP43ow3DnD94RzA9qM31BLx/7ufU7rLlWKPLscbJUa1hwytIvKECH KyGv1/cyYZsNUp9XXYgMuaT4w7wRqyZE7Xvr9gKadfTjAGm2B3nnm29Lrhl4Hc93kE0D +ntHaq8stYGqAO/6okY/E+mBNRenkNvqh244JfNr3K1Rc2gURhFJjsUO3h5RHXIHv1b4 8rkalsaPpIIU8Yd5QdW9R93ZSOemAGnVlhMTDGw+ZPnykoTrW8jBQ4FokcJo3BvXf2xL hJEk/ZFdtu2bW35QN2sNABKsx62NpxxXmJsrGk8eO6dl3UOR2lzX34pgJUTeLH59Smjp Lr4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=ah9gXDd6fJvOzz9kx2O2leuWRmK2UF+FaL+3WFxvTJ8=; b=aCwgpau1gQr2y3rexaV0OX/JGIGj0+nyUXiGHivIFrMgdxQ99aYkuf7rzNOFWF3uPr o6V4y+WMBzZTiwvRHf4HFQi5yZCWWMU7qFzcMQayTLwzWsYR68EpqaScLdy1zRoHaS+T Vj/IM1xS/3cUx7mPRi3IBiFQT91pl2vO2XlaCbvSnIipkam+H7Q0bHn1U7qqikHWAAOE bmTsfeOScE3dAmDpxMYRFYXuoRsngBwCoDvUy/ON+MvxkCliLwPlAT6iBhMHUJnj88Bk PDTdWv+Q3JUbck/8zviFYPjaJrGn1n7ArY2Yx620WsPw2JoMRcGc7lLUUfoLeHT4hNa6 3YsA== X-Gm-Message-State: AOAM531FGTMswtEI1qRx8J34qXmu6IB/YJrrFzlOd0Hdl3CqBJbD2U6g pQ3yLfitC6NcyDdOi3i0WCbeph5b9w== X-Google-Smtp-Source: ABdhPJx0MGh1esHygyGmugyNFtFbLjJ17xcPDf/Zl3jsEQ9VM2CtXd7GdNQW4w6TBVnK0kcjEDJ2MCAADA== X-Received: from tabba.c.googlers.com ([fda3:e722:ac3:cc00:28:9cb1:c0a8:482]) (user=tabba job=sendgmr) by 2002:a0c:914f:: with SMTP id q73mr9847672qvq.39.1632488089835; Fri, 24 Sep 2021 05:54:49 -0700 (PDT) Date: Fri, 24 Sep 2021 13:53:52 +0100 In-Reply-To: <20210924125359.2587041-1-tabba@google.com> Message-Id: <20210924125359.2587041-24-tabba@google.com> Mime-Version: 1.0 References: <20210924125359.2587041-1-tabba@google.com> X-Mailer: git-send-email 2.33.0.685.g46640cef36-goog Subject: [RFC PATCH v1 23/30] KVM: arm64: COCCI: remove_unused.cocci: remove unused ctxt and hypstate variables From: Fuad Tabba To: kvmarm@lists.cs.columbia.edu Cc: maz@kernel.org, will@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, mark.rutland@arm.com, christoffer.dall@arm.com, drjones@redhat.com, qperret@google.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-team@android.com, tabba@google.com Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org These local variables were added aggressively. Remove the ones that ended up not being used. Also, some of the added variables are missing a new line after their definition. Insert that for the remaining ones. This applies the semantic patch with the following command: spatch --sp-file cocci_refactor/remove_unused.cocci --dir arch/arm64/kvm/hyp --in-place --include-headers --force-diff Signed-off-by: Fuad Tabba --- arch/arm64/kvm/hyp/exception.c | 5 ----- arch/arm64/kvm/hyp/include/hyp/switch.h | 9 ++++----- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 2 ++ arch/arm64/kvm/hyp/nvhe/switch.c | 1 - arch/arm64/kvm/hyp/vhe/switch.c | 3 --- arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 3 --- 6 files changed, 6 insertions(+), 17 deletions(-) diff --git a/arch/arm64/kvm/hyp/exception.c b/arch/arm64/kvm/hyp/exception.c index a08806efe031..bb0bc1f5568c 100644 --- a/arch/arm64/kvm/hyp/exception.c +++ b/arch/arm64/kvm/hyp/exception.c @@ -59,31 +59,26 @@ static void __ctxt_write_spsr_und(struct kvm_cpu_context *vcpu_ctxt, u64 val) static inline u64 __vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg) { - const struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); return __ctxt_read_sys_reg(&vcpu_ctxt(vcpu), reg); } static inline void __vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); __ctxt_write_sys_reg(&vcpu_ctxt(vcpu), val, reg); } static void __vcpu_write_spsr(struct kvm_vcpu *vcpu, u64 val) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); __ctxt_write_spsr(&vcpu_ctxt(vcpu), val); } static void __vcpu_write_spsr_abt(struct kvm_vcpu *vcpu, u64 val) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); __ctxt_write_spsr_abt(&vcpu_ctxt(vcpu), val); } static void __vcpu_write_spsr_und(struct kvm_vcpu *vcpu, u64 val) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); __ctxt_write_spsr_und(&vcpu_ctxt(vcpu), val); } diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h index 44e76993a9b4..433601f79b94 100644 --- a/arch/arm64/kvm/hyp/include/hyp/switch.h +++ b/arch/arm64/kvm/hyp/include/hyp/switch.h @@ -37,6 +37,7 @@ extern struct exception_table_entry __stop___kvm_ex_table; static inline bool update_fp_enabled(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); + /* * When the system doesn't support FP/SIMD, we cannot rely on * the _TIF_FOREIGN_FPSTATE flag. However, we always inject an @@ -55,8 +56,8 @@ static inline bool update_fp_enabled(struct kvm_vcpu *vcpu) /* Save the 32-bit only FPSIMD system register state */ static inline void __fpsimd_save_fpexc32(struct kvm_vcpu *vcpu) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); + if (!vcpu_el1_is_32bit(vcpu)) return; @@ -65,8 +66,6 @@ static inline void __fpsimd_save_fpexc32(struct kvm_vcpu *vcpu) static inline void __activate_traps_fpsimd32(struct kvm_vcpu *vcpu) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); /* * We are about to set CPTR_EL2.TFP to trap all floating point * register accesses to EL2, however, the ARM ARM clearly states that @@ -220,8 +219,8 @@ static inline void __hyp_sve_save_host(struct kvm_vcpu *vcpu) static inline void __hyp_sve_restore_guest(struct kvm_vcpu *vcpu) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); + sve_cond_update_zcr_vq(vcpu_sve_max_vq(vcpu) - 1, SYS_ZCR_EL2); __sve_restore_state(vcpu_sve_pffr(vcpu), &ctxt_fp_regs(vcpu_ctxt)->fpsr); @@ -395,7 +394,6 @@ DECLARE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt); static inline bool __hyp_handle_ptrauth(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); struct kvm_cpu_context *ctxt; u64 val; @@ -428,6 +426,7 @@ static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, struct vgic_dist *vgi { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); + if (ARM_EXCEPTION_CODE(*exit_code) != ARM_EXCEPTION_IRQ) hyp_state_fault(vcpu_hyps).esr_el2 = read_sysreg_el2(SYS_ESR); diff --git a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h index df9cd2177e71..b750ff40a604 100644 --- a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h +++ b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h @@ -160,6 +160,7 @@ static inline void __sysreg32_save_state(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); + if (!vcpu_el1_is_32bit(vcpu)) return; @@ -179,6 +180,7 @@ static inline void __sysreg32_restore_state(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); + if (!vcpu_el1_is_32bit(vcpu)) return; diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c index d9a69e66158c..b90ec8db5864 100644 --- a/arch/arm64/kvm/hyp/nvhe/switch.c +++ b/arch/arm64/kvm/hyp/nvhe/switch.c @@ -37,7 +37,6 @@ DEFINE_PER_CPU(unsigned long, kvm_hyp_vector); static void __activate_traps(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); u64 val; ___activate_traps(vcpu_hyps); diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c index 5039910a7c80..7f926016cebe 100644 --- a/arch/arm64/kvm/hyp/vhe/switch.c +++ b/arch/arm64/kvm/hyp/vhe/switch.c @@ -34,7 +34,6 @@ DEFINE_PER_CPU(unsigned long, kvm_hyp_vector); static void __activate_traps(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); u64 val; ___activate_traps(vcpu_hyps); @@ -168,8 +167,6 @@ NOKPROBE_SYMBOL(__kvm_vcpu_run_vhe); int __kvm_vcpu_run(struct kvm_vcpu *vcpu) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); int ret; local_daif_mask(); diff --git a/arch/arm64/kvm/hyp/vhe/sysreg-sr.c b/arch/arm64/kvm/hyp/vhe/sysreg-sr.c index 1571c144e9b0..1ded8be83c5a 100644 --- a/arch/arm64/kvm/hyp/vhe/sysreg-sr.c +++ b/arch/arm64/kvm/hyp/vhe/sysreg-sr.c @@ -64,7 +64,6 @@ NOKPROBE_SYMBOL(sysreg_restore_guest_state_vhe); void kvm_vcpu_load_sysregs_vhe(struct kvm_vcpu *vcpu) { struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); struct kvm_cpu_context *guest_ctxt = &vcpu->arch.ctxt; struct kvm_cpu_context *host_ctxt; @@ -99,8 +98,6 @@ void kvm_vcpu_load_sysregs_vhe(struct kvm_vcpu *vcpu) */ void kvm_vcpu_put_sysregs_vhe(struct kvm_vcpu *vcpu) { - struct vcpu_hyp_state *vcpu_hyps = &hyp_state(vcpu); - struct kvm_cpu_context *vcpu_ctxt = &vcpu_ctxt(vcpu); struct kvm_cpu_context *guest_ctxt = &vcpu->arch.ctxt; struct kvm_cpu_context *host_ctxt;