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=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 856B8C4338F for ; Thu, 29 Jul 2021 13:29:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D60060EBC for ; Thu, 29 Jul 2021 13:29:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237853AbhG2N3x (ORCPT ); Thu, 29 Jul 2021 09:29:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237824AbhG2N3I (ORCPT ); Thu, 29 Jul 2021 09:29:08 -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 DC17FC06179E for ; Thu, 29 Jul 2021 06:29:04 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id m15-20020a0cbf0f0000b02902e60d75210eso3857158qvi.19 for ; Thu, 29 Jul 2021 06:29:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=A6q+k/2f/nOWcbFbtJvlk6wu0j4PPp7j4DV+/ij7+Zw=; b=U+oEmrVLnRO5V5rONRO0VKkB4yMJ0XwNC+Wadxfk9wVCif0pHoVVmUyACeRqDl5cT8 iQtuPQbYUIUYzlz/k/h7LrQi6rNfsMDLFZDTD7w1BxGSkHw2M2YPTBdizP8VYY8URChE GdIKsr9cTjF9zrFWvoVXioJeyRFqpLWSjXwOIfqsXN6g22j11Xpdy/Rtrec4jMivVFFx T9Xg2/+/lnugsqkF2REruk8Zj1inz37KO5rKfbqRo0dfJDJnCc4nWiugczgDYzxcRI6o an4yLEw/JNRfUQDFYtsJ3a0nLfJ3RJ5LuT6H38+qCUbAS9I53lQV+mIA26I33QdTRd9j asrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=A6q+k/2f/nOWcbFbtJvlk6wu0j4PPp7j4DV+/ij7+Zw=; b=oT0BKsb8nNhv7B1Bo67rsq1c/mkUof4Vcg7c/bbyREKqKzraT/6HjQuTuRGcLTwfq3 y4jE4tNsg38oG2BQy0qr2PJr2AtVJ0i20S+RDxR0o9sTCL+1XkdaLMgaSSmCYFIcp+Tt 2/yPeGCKC8Tpf/7k8dkKuLUf0MsNdUb2JbGSlG5Ks58+LB6Mp63+c8iGYWpy9w+ettZr kSKi2nm9PJZMRWplmU7HCOZhtC2XeEHAxItUVR7UORFhhmRoLh/DB3WfTsoPRZ2KAGTu 2XmXPdTtJy8mAOdlaXUPZD+77iD3m2LsnGvdGH19NamJqubUmmA1Rsrsd3YLKeK7v3xB fXZA== X-Gm-Message-State: AOAM533ytANonMnde/48upE6EvpXQKAtRZKtN8m7mw0OVYITzS/0BR8f 3XkW9VTmsaHrQSaqZfRXmgf0d9zYH0qd X-Google-Smtp-Source: ABdhPJwMN8hM+c5sxer4Dc5eWhx+y84XlkDTVvbjFRmJISZp4KIimDXCzxS3TTTTLggakeATNucSln2y70gM X-Received: from luke.lon.corp.google.com ([2a00:79e0:d:210:293a:bc89:7514:5218]) (user=qperret job=sendgmr) by 2002:a05:6214:d1:: with SMTP id f17mr5275922qvs.12.1627565343999; Thu, 29 Jul 2021 06:29:03 -0700 (PDT) Date: Thu, 29 Jul 2021 14:28:15 +0100 In-Reply-To: <20210729132818.4091769-1-qperret@google.com> Message-Id: <20210729132818.4091769-19-qperret@google.com> Mime-Version: 1.0 References: <20210729132818.4091769-1-qperret@google.com> X-Mailer: git-send-email 2.32.0.432.gabb21c7263-goog Subject: [PATCH v3 18/21] KVM: arm64: Remove __pkvm_mark_hyp From: Quentin Perret To: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, ardb@kernel.org, qwandor@google.com, tabba@google.com, dbrazdil@google.com, kernel-team@android.com, Quentin Perret Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we mark memory owned by the hypervisor in the host stage-2 during __pkvm_init(), we no longer need to rely on the host to explicitly mark the hyp sections later on. Remove the __pkvm_mark_hyp() hypercall altogether. Signed-off-by: Quentin Perret --- arch/arm64/include/asm/kvm_asm.h | 3 +- arch/arm64/kvm/arm.c | 46 ------------------- arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 - arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 ---- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 19 -------- 5 files changed, 1 insertion(+), 77 deletions(-) diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 9f0bf2109be7..432a9ea1f02e 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -63,8 +63,7 @@ #define __KVM_HOST_SMCCC_FUNC___pkvm_create_private_mapping 17 #define __KVM_HOST_SMCCC_FUNC___pkvm_cpu_set_vector 18 #define __KVM_HOST_SMCCC_FUNC___pkvm_prot_finalize 19 -#define __KVM_HOST_SMCCC_FUNC___pkvm_mark_hyp 20 -#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 21 +#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 20 #ifndef __ASSEMBLY__ diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e9a2b8f27792..2f378482471b 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1954,57 +1954,11 @@ static void _kvm_host_prot_finalize(void *discard) WARN_ON(kvm_call_hyp_nvhe(__pkvm_prot_finalize)); } -static inline int pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - return kvm_call_hyp_nvhe(__pkvm_mark_hyp, start, end); -} - -#define pkvm_mark_hyp_section(__section) \ - pkvm_mark_hyp(__pa_symbol(__section##_start), \ - __pa_symbol(__section##_end)) - static int finalize_hyp_mode(void) { - int cpu, ret; - if (!is_protected_kvm_enabled()) return 0; - ret = pkvm_mark_hyp_section(__hyp_idmap_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_rodata); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_bss); - if (ret) - return ret; - - ret = pkvm_mark_hyp(hyp_mem_base, hyp_mem_base + hyp_mem_size); - if (ret) - return ret; - - for_each_possible_cpu(cpu) { - phys_addr_t start = virt_to_phys((void *)kvm_arm_hyp_percpu_base[cpu]); - phys_addr_t end = start + (PAGE_SIZE << nvhe_percpu_order()); - - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - - start = virt_to_phys((void *)per_cpu(kvm_arm_hyp_stack_page, cpu)); - end = start + PAGE_SIZE; - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - } - /* * Flip the static key upfront as that may no longer be possible * once the host stage 2 is installed. diff --git a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h index 5968fbbb3514..7ce36fbf5158 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h +++ b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h @@ -49,7 +49,6 @@ extern struct host_kvm host_kvm; extern const u8 pkvm_hyp_id; int __pkvm_prot_finalize(void); -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end); bool addr_is_memory(phys_addr_t phys); int host_stage2_idmap_locked(u64 start, u64 end, enum kvm_pgtable_prot prot); diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index 1632f001f4ed..7900d5b66ba3 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -163,14 +163,6 @@ static void handle___pkvm_prot_finalize(struct kvm_cpu_context *host_ctxt) { cpu_reg(host_ctxt, 1) = __pkvm_prot_finalize(); } - -static void handle___pkvm_mark_hyp(struct kvm_cpu_context *host_ctxt) -{ - DECLARE_REG(phys_addr_t, start, host_ctxt, 1); - DECLARE_REG(phys_addr_t, end, host_ctxt, 2); - - cpu_reg(host_ctxt, 1) = __pkvm_mark_hyp(start, end); -} typedef void (*hcall_t)(struct kvm_cpu_context *); #define HANDLE_FUNC(x) [__KVM_HOST_SMCCC_FUNC_##x] = (hcall_t)handle_##x @@ -196,7 +188,6 @@ static const hcall_t host_hcall[] = { HANDLE_FUNC(__pkvm_create_mappings), HANDLE_FUNC(__pkvm_create_private_mapping), HANDLE_FUNC(__pkvm_prot_finalize), - HANDLE_FUNC(__pkvm_mark_hyp), }; static void handle_host_hcall(struct kvm_cpu_context *host_ctxt) diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 4532f3d55a1a..0ccea58df7e0 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -338,25 +338,6 @@ static int host_stage2_idmap(u64 addr) return ret; } -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - int ret; - - /* - * host_stage2_unmap_dev_all() currently relies on MMIO mappings being - * non-persistent, so don't allow changing page ownership in MMIO range. - */ - if (!range_is_memory(start, end)) - return -EINVAL; - - hyp_spin_lock(&host_kvm.lock); - ret = host_stage2_try(kvm_pgtable_stage2_set_owner, &host_kvm.pgt, - start, end - start, &host_s2_pool, pkvm_hyp_id); - hyp_spin_unlock(&host_kvm.lock); - - return ret != -EAGAIN ? ret : 0; -} - void handle_host_mem_abort(struct kvm_cpu_context *host_ctxt) { struct kvm_vcpu_fault_info fault; -- 2.32.0.432.gabb21c7263-goog 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=-16.6 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,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 1829EC4338F for ; Thu, 29 Jul 2021 13:29:10 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id C1B2860F42 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Now that we mark memory owned by the hypervisor in the host stage-2 during __pkvm_init(), we no longer need to rely on the host to explicitly mark the hyp sections later on. Remove the __pkvm_mark_hyp() hypercall altogether. Signed-off-by: Quentin Perret --- arch/arm64/include/asm/kvm_asm.h | 3 +- arch/arm64/kvm/arm.c | 46 ------------------- arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 - arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 ---- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 19 -------- 5 files changed, 1 insertion(+), 77 deletions(-) diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 9f0bf2109be7..432a9ea1f02e 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -63,8 +63,7 @@ #define __KVM_HOST_SMCCC_FUNC___pkvm_create_private_mapping 17 #define __KVM_HOST_SMCCC_FUNC___pkvm_cpu_set_vector 18 #define __KVM_HOST_SMCCC_FUNC___pkvm_prot_finalize 19 -#define __KVM_HOST_SMCCC_FUNC___pkvm_mark_hyp 20 -#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 21 +#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 20 #ifndef __ASSEMBLY__ diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e9a2b8f27792..2f378482471b 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1954,57 +1954,11 @@ static void _kvm_host_prot_finalize(void *discard) WARN_ON(kvm_call_hyp_nvhe(__pkvm_prot_finalize)); } -static inline int pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - return kvm_call_hyp_nvhe(__pkvm_mark_hyp, start, end); -} - -#define pkvm_mark_hyp_section(__section) \ - pkvm_mark_hyp(__pa_symbol(__section##_start), \ - __pa_symbol(__section##_end)) - static int finalize_hyp_mode(void) { - int cpu, ret; - if (!is_protected_kvm_enabled()) return 0; - ret = pkvm_mark_hyp_section(__hyp_idmap_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_rodata); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_bss); - if (ret) - return ret; - - ret = pkvm_mark_hyp(hyp_mem_base, hyp_mem_base + hyp_mem_size); - if (ret) - return ret; - - for_each_possible_cpu(cpu) { - phys_addr_t start = virt_to_phys((void *)kvm_arm_hyp_percpu_base[cpu]); - phys_addr_t end = start + (PAGE_SIZE << nvhe_percpu_order()); - - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - - start = virt_to_phys((void *)per_cpu(kvm_arm_hyp_stack_page, cpu)); - end = start + PAGE_SIZE; - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - } - /* * Flip the static key upfront as that may no longer be possible * once the host stage 2 is installed. diff --git a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h index 5968fbbb3514..7ce36fbf5158 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h +++ b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h @@ -49,7 +49,6 @@ extern struct host_kvm host_kvm; extern const u8 pkvm_hyp_id; int __pkvm_prot_finalize(void); -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end); bool addr_is_memory(phys_addr_t phys); int host_stage2_idmap_locked(u64 start, u64 end, enum kvm_pgtable_prot prot); diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index 1632f001f4ed..7900d5b66ba3 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -163,14 +163,6 @@ static void handle___pkvm_prot_finalize(struct kvm_cpu_context *host_ctxt) { cpu_reg(host_ctxt, 1) = __pkvm_prot_finalize(); } - -static void handle___pkvm_mark_hyp(struct kvm_cpu_context *host_ctxt) -{ - DECLARE_REG(phys_addr_t, start, host_ctxt, 1); - DECLARE_REG(phys_addr_t, end, host_ctxt, 2); - - cpu_reg(host_ctxt, 1) = __pkvm_mark_hyp(start, end); -} typedef void (*hcall_t)(struct kvm_cpu_context *); #define HANDLE_FUNC(x) [__KVM_HOST_SMCCC_FUNC_##x] = (hcall_t)handle_##x @@ -196,7 +188,6 @@ static const hcall_t host_hcall[] = { HANDLE_FUNC(__pkvm_create_mappings), HANDLE_FUNC(__pkvm_create_private_mapping), HANDLE_FUNC(__pkvm_prot_finalize), - HANDLE_FUNC(__pkvm_mark_hyp), }; static void handle_host_hcall(struct kvm_cpu_context *host_ctxt) diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 4532f3d55a1a..0ccea58df7e0 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -338,25 +338,6 @@ static int host_stage2_idmap(u64 addr) return ret; } -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - int ret; - - /* - * host_stage2_unmap_dev_all() currently relies on MMIO mappings being - * non-persistent, so don't allow changing page ownership in MMIO range. - */ - if (!range_is_memory(start, end)) - return -EINVAL; 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Thu, 29 Jul 2021 06:29:03 -0700 (PDT) Date: Thu, 29 Jul 2021 14:28:15 +0100 In-Reply-To: <20210729132818.4091769-1-qperret@google.com> Message-Id: <20210729132818.4091769-19-qperret@google.com> Mime-Version: 1.0 References: <20210729132818.4091769-1-qperret@google.com> X-Mailer: git-send-email 2.32.0.432.gabb21c7263-goog Subject: [PATCH v3 18/21] KVM: arm64: Remove __pkvm_mark_hyp From: Quentin Perret To: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, ardb@kernel.org, qwandor@google.com, tabba@google.com, dbrazdil@google.com, kernel-team@android.com, Quentin Perret X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_062905_697137_D2116AFD X-CRM114-Status: GOOD ( 15.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that we mark memory owned by the hypervisor in the host stage-2 during __pkvm_init(), we no longer need to rely on the host to explicitly mark the hyp sections later on. Remove the __pkvm_mark_hyp() hypercall altogether. Signed-off-by: Quentin Perret --- arch/arm64/include/asm/kvm_asm.h | 3 +- arch/arm64/kvm/arm.c | 46 ------------------- arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 1 - arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 ---- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 19 -------- 5 files changed, 1 insertion(+), 77 deletions(-) diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 9f0bf2109be7..432a9ea1f02e 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -63,8 +63,7 @@ #define __KVM_HOST_SMCCC_FUNC___pkvm_create_private_mapping 17 #define __KVM_HOST_SMCCC_FUNC___pkvm_cpu_set_vector 18 #define __KVM_HOST_SMCCC_FUNC___pkvm_prot_finalize 19 -#define __KVM_HOST_SMCCC_FUNC___pkvm_mark_hyp 20 -#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 21 +#define __KVM_HOST_SMCCC_FUNC___kvm_adjust_pc 20 #ifndef __ASSEMBLY__ diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e9a2b8f27792..2f378482471b 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1954,57 +1954,11 @@ static void _kvm_host_prot_finalize(void *discard) WARN_ON(kvm_call_hyp_nvhe(__pkvm_prot_finalize)); } -static inline int pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - return kvm_call_hyp_nvhe(__pkvm_mark_hyp, start, end); -} - -#define pkvm_mark_hyp_section(__section) \ - pkvm_mark_hyp(__pa_symbol(__section##_start), \ - __pa_symbol(__section##_end)) - static int finalize_hyp_mode(void) { - int cpu, ret; - if (!is_protected_kvm_enabled()) return 0; - ret = pkvm_mark_hyp_section(__hyp_idmap_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_text); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_rodata); - if (ret) - return ret; - - ret = pkvm_mark_hyp_section(__hyp_bss); - if (ret) - return ret; - - ret = pkvm_mark_hyp(hyp_mem_base, hyp_mem_base + hyp_mem_size); - if (ret) - return ret; - - for_each_possible_cpu(cpu) { - phys_addr_t start = virt_to_phys((void *)kvm_arm_hyp_percpu_base[cpu]); - phys_addr_t end = start + (PAGE_SIZE << nvhe_percpu_order()); - - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - - start = virt_to_phys((void *)per_cpu(kvm_arm_hyp_stack_page, cpu)); - end = start + PAGE_SIZE; - ret = pkvm_mark_hyp(start, end); - if (ret) - return ret; - } - /* * Flip the static key upfront as that may no longer be possible * once the host stage 2 is installed. diff --git a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h index 5968fbbb3514..7ce36fbf5158 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h +++ b/arch/arm64/kvm/hyp/include/nvhe/mem_protect.h @@ -49,7 +49,6 @@ extern struct host_kvm host_kvm; extern const u8 pkvm_hyp_id; int __pkvm_prot_finalize(void); -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end); bool addr_is_memory(phys_addr_t phys); int host_stage2_idmap_locked(u64 start, u64 end, enum kvm_pgtable_prot prot); diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index 1632f001f4ed..7900d5b66ba3 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -163,14 +163,6 @@ static void handle___pkvm_prot_finalize(struct kvm_cpu_context *host_ctxt) { cpu_reg(host_ctxt, 1) = __pkvm_prot_finalize(); } - -static void handle___pkvm_mark_hyp(struct kvm_cpu_context *host_ctxt) -{ - DECLARE_REG(phys_addr_t, start, host_ctxt, 1); - DECLARE_REG(phys_addr_t, end, host_ctxt, 2); - - cpu_reg(host_ctxt, 1) = __pkvm_mark_hyp(start, end); -} typedef void (*hcall_t)(struct kvm_cpu_context *); #define HANDLE_FUNC(x) [__KVM_HOST_SMCCC_FUNC_##x] = (hcall_t)handle_##x @@ -196,7 +188,6 @@ static const hcall_t host_hcall[] = { HANDLE_FUNC(__pkvm_create_mappings), HANDLE_FUNC(__pkvm_create_private_mapping), HANDLE_FUNC(__pkvm_prot_finalize), - HANDLE_FUNC(__pkvm_mark_hyp), }; static void handle_host_hcall(struct kvm_cpu_context *host_ctxt) diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 4532f3d55a1a..0ccea58df7e0 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -338,25 +338,6 @@ static int host_stage2_idmap(u64 addr) return ret; } -int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end) -{ - int ret; - - /* - * host_stage2_unmap_dev_all() currently relies on MMIO mappings being - * non-persistent, so don't allow changing page ownership in MMIO range. - */ - if (!range_is_memory(start, end)) - return -EINVAL; - - hyp_spin_lock(&host_kvm.lock); - ret = host_stage2_try(kvm_pgtable_stage2_set_owner, &host_kvm.pgt, - start, end - start, &host_s2_pool, pkvm_hyp_id); - hyp_spin_unlock(&host_kvm.lock); - - return ret != -EAGAIN ? ret : 0; -} - void handle_host_mem_abort(struct kvm_cpu_context *host_ctxt) { struct kvm_vcpu_fault_info fault; -- 2.32.0.432.gabb21c7263-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel