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[34.83.12.150]) by smtp.gmail.com with ESMTPSA id h4sm9572790pgn.6.2021.09.13.14.21.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Sep 2021 14:21:52 -0700 (PDT) Date: Mon, 13 Sep 2021 14:21:49 -0700 From: Ricardo Koller To: Raghavendra Rao Ananta Subject: Re: [PATCH v5 09/14] KVM: arm64: selftests: Add guest support to get the vcpuid Message-ID: References: <20210913204930.130715-1-rananta@google.com> <20210913204930.130715-10-rananta@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210913204930.130715-10-rananta@google.com> Cc: kvm@vger.kernel.org, Will Deacon , Marc Zyngier , Peter Shier , linux-kernel@vger.kernel.org, Catalin Marinas , Paolo Bonzini , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Mon, Sep 13, 2021 at 08:49:25PM +0000, Raghavendra Rao Ananta wrote: > At times, such as when in the interrupt handler, the guest wants > to get the vcpuid that it's running on to pull the per-cpu private > data. As a result, introduce guest_get_vcpuid() that returns the > vcpuid of the calling vcpu. The interface is architecture > independent, but defined only for arm64 as of now. > > Suggested-by: Reiji Watanabe > Signed-off-by: Raghavendra Rao Ananta > --- > tools/testing/selftests/kvm/include/kvm_util.h | 2 ++ > tools/testing/selftests/kvm/lib/aarch64/processor.c | 6 ++++++ > 2 files changed, 8 insertions(+) > > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index 010b59b13917..5770751a5735 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -400,4 +400,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc); > int vm_get_stats_fd(struct kvm_vm *vm); > int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid); > > +int guest_get_vcpuid(void); > + > #endif /* SELFTEST_KVM_UTIL_H */ > diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c > index db64ee206064..f1255f44dad0 100644 > --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c > +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c > @@ -277,6 +277,7 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TCR_EL1), tcr_el1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_MAIR_EL1), DEFAULT_MAIR_EL1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TTBR0_EL1), vm->pgd); > + set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TPIDR_EL1), vcpuid); > } > > void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent) > @@ -426,3 +427,8 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, > assert(vector < VECTOR_NUM); > handlers->exception_handlers[vector][0] = handler; > } > + > +int guest_get_vcpuid(void) > +{ > + return read_sysreg(tpidr_el1); > +} > -- > 2.33.0.309.g3052b89438-goog > Very nice! Reviewed-by: Ricardo Koller _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 5EF34C433EF for ; Mon, 13 Sep 2021 21:24:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 2942D603E7 for ; Mon, 13 Sep 2021 21:24:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2942D603E7 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CVoA9VE2CRJNVJ0svPkfmQsyPfcqeQN07qXRQhGIN10=; b=fiUg1+ayhh2CYI zG+vUlgtMqP1b+e1w47C/v6+GWNgtmgYUaaDGsf92xXvGLmEtPc55/9DP9rNC4QsiThBn9pKIYK3L oAbzVNYAwbngLn4elO8grhAnxciiAdKdU4V5uTD9q7L04LrUFMd8QfdGhT/8EhNCVqrukwi5GqacC 6zVZu42loLv2lbgJhRNDdQou0sAbaEQ69uxcXQ7BPTaanWd1Rjwvr3c1oUPr2S4XADK4LTAOZc7Gt PFXUdKMiorftyq7G90/P0VCztlyso9gJ0vlEKZZXoHp0MDGFUF3nlNBGhmmT5drHcQW2nBTowvPp5 3A/xnroGJnWPnN+A9oIQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mPtOp-003KLX-BH; Mon, 13 Sep 2021 21:21:59 +0000 Received: from mail-pl1-x635.google.com ([2607:f8b0:4864:20::635]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mPtOm-003KKk-08 for linux-arm-kernel@lists.infradead.org; Mon, 13 Sep 2021 21:21:57 +0000 Received: by mail-pl1-x635.google.com with SMTP id t4so1130021plo.0 for ; Mon, 13 Sep 2021 14:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=fWNyNuWnfBEyX//B3PcmZaO6uYna7uC+39up3Pmvm+8=; b=VNbYPScpWdu/+9kJQYujI627m1cbPd5AK0q3W7rUtsjD+wQqf5uxTRUPkyNLcI+vsQ 95ls9st99bgw1HEG0Lg2EnQtls8De5iWrAA1e8dA6kh+GcSy+cQi+FQaCdfsLKjo25sM vlVpDN7nfXWECP+z3ri6WMc3A2iYS3cqkW6Gppp2HlyhbcyOJVCH8kRBKwlxialjStqK 9CR9Oo1Bmn654iRbxkf5vE6oPSYOMxNOKwU8ABELek1ptfDV3XlL6eDmnWRy3x8yD2ch 2471SYHeslbj40c3FpwZTJgvANBUZxfrTM5K+vimM47ItTxkgOkK3Qd736c7HNwuu2vy gVWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=fWNyNuWnfBEyX//B3PcmZaO6uYna7uC+39up3Pmvm+8=; b=Z1Ewsyie4CNIKWTbDsqCJwu4LTpbFZiQoCQBIBIu5OTm0af2aW9feqKlZ9YsVrTh+C CIF18Hjn9rDrx7gWSBN8CUdkExBWbjX7F1QUCHq3tupwdgj8hgrezBy9mwPX7EPpSjGz 4kd4sUCoW4+pzS8FzRtsjWC56zyhXBC4MOSLbbyQLBkXuUi8goYhyYhMoQKSC9gRcAoS hWdT/Dxhs8V2U940uhOc6DguJUf1/U7HXD8cfiFTM7IqbKftG1TDYrTD13Y9nW6pwOAe Tlh786gCSOCxG9MBz0bLEtPR7UFRBbN7Pi8gb5849/HKMzD2C5FKJRbI/tMxZkhSPHpf od3g== X-Gm-Message-State: AOAM533rEMhxgYUTsoGEe53ywHJqi6GYk+MDkiLNkJYYi/cpTEHhzLFu IjVVmqOgo+KhMrA5oLFqUiz1Nw== X-Google-Smtp-Source: ABdhPJwvIW9IiYxlpkcbkQt8tmAgik541eS8PeQM06VAFcAI9aAjBD1MujGdRq9Puie33WX2z1QICg== X-Received: by 2002:a17:902:a710:b029:12b:9b9f:c461 with SMTP id w16-20020a170902a710b029012b9b9fc461mr12262098plq.59.1631568113182; Mon, 13 Sep 2021 14:21:53 -0700 (PDT) Received: from google.com (150.12.83.34.bc.googleusercontent.com. [34.83.12.150]) by smtp.gmail.com with ESMTPSA id h4sm9572790pgn.6.2021.09.13.14.21.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Sep 2021 14:21:52 -0700 (PDT) Date: Mon, 13 Sep 2021 14:21:49 -0700 From: Ricardo Koller To: Raghavendra Rao Ananta Cc: Paolo Bonzini , Marc Zyngier , Andrew Jones , James Morse , Alexandru Elisei , Suzuki K Poulose , Catalin Marinas , Will Deacon , Peter Shier , Oliver Upton , Reiji Watanabe , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH v5 09/14] KVM: arm64: selftests: Add guest support to get the vcpuid Message-ID: References: <20210913204930.130715-1-rananta@google.com> <20210913204930.130715-10-rananta@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210913204930.130715-10-rananta@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210913_142156_109132_C918E64B X-CRM114-Status: GOOD ( 19.27 ) 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 On Mon, Sep 13, 2021 at 08:49:25PM +0000, Raghavendra Rao Ananta wrote: > At times, such as when in the interrupt handler, the guest wants > to get the vcpuid that it's running on to pull the per-cpu private > data. As a result, introduce guest_get_vcpuid() that returns the > vcpuid of the calling vcpu. The interface is architecture > independent, but defined only for arm64 as of now. > > Suggested-by: Reiji Watanabe > Signed-off-by: Raghavendra Rao Ananta > --- > tools/testing/selftests/kvm/include/kvm_util.h | 2 ++ > tools/testing/selftests/kvm/lib/aarch64/processor.c | 6 ++++++ > 2 files changed, 8 insertions(+) > > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index 010b59b13917..5770751a5735 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -400,4 +400,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc); > int vm_get_stats_fd(struct kvm_vm *vm); > int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid); > > +int guest_get_vcpuid(void); > + > #endif /* SELFTEST_KVM_UTIL_H */ > diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c > index db64ee206064..f1255f44dad0 100644 > --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c > +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c > @@ -277,6 +277,7 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TCR_EL1), tcr_el1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_MAIR_EL1), DEFAULT_MAIR_EL1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TTBR0_EL1), vm->pgd); > + set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TPIDR_EL1), vcpuid); > } > > void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent) > @@ -426,3 +427,8 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, > assert(vector < VECTOR_NUM); > handlers->exception_handlers[vector][0] = handler; > } > + > +int guest_get_vcpuid(void) > +{ > + return read_sysreg(tpidr_el1); > +} > -- > 2.33.0.309.g3052b89438-goog > Very nice! Reviewed-by: Ricardo Koller _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-23.3 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_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 4D496C433F5 for ; Mon, 13 Sep 2021 21:21:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 30F3160EE5 for ; Mon, 13 Sep 2021 21:21:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242742AbhIMVXK (ORCPT ); Mon, 13 Sep 2021 17:23:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230426AbhIMVXK (ORCPT ); Mon, 13 Sep 2021 17:23:10 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAB41C061574 for ; Mon, 13 Sep 2021 14:21:53 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id lb1-20020a17090b4a4100b001993f863df2so1055792pjb.5 for ; Mon, 13 Sep 2021 14:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=fWNyNuWnfBEyX//B3PcmZaO6uYna7uC+39up3Pmvm+8=; b=VNbYPScpWdu/+9kJQYujI627m1cbPd5AK0q3W7rUtsjD+wQqf5uxTRUPkyNLcI+vsQ 95ls9st99bgw1HEG0Lg2EnQtls8De5iWrAA1e8dA6kh+GcSy+cQi+FQaCdfsLKjo25sM vlVpDN7nfXWECP+z3ri6WMc3A2iYS3cqkW6Gppp2HlyhbcyOJVCH8kRBKwlxialjStqK 9CR9Oo1Bmn654iRbxkf5vE6oPSYOMxNOKwU8ABELek1ptfDV3XlL6eDmnWRy3x8yD2ch 2471SYHeslbj40c3FpwZTJgvANBUZxfrTM5K+vimM47ItTxkgOkK3Qd736c7HNwuu2vy gVWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=fWNyNuWnfBEyX//B3PcmZaO6uYna7uC+39up3Pmvm+8=; b=wdDaTFvuJYFsuGr1ghPieTYNugHd6BFx25CgKO51IM9oO8LFU/CRw9oby6wsyP/dUA u3lnnuvlE80V63fxozNJDUCPPtEo5x+co06oNRD5gODAviwQeDWvTTX3X6i5HIQds6Na xQJ+FyxddqSK1ix2noVfonUpnRkGlmWZRyRZwOUxLGOeEASPd9KSDSAN1ElTMg9Q3LrU 03MIX5MYagF8g8OtUuorNy4cingD8LXdBLyH/rwFzlr8Rm8RWs9Tpnd6FOEZ4jkbjkm7 BjaFbwUd4nPIJ5DtD9zSlr/b4/vQhhyFqZFFPuky/8sKn0Y5FuRYNSnwLwX5QQo3r78p itiA== X-Gm-Message-State: AOAM531r58E+dYlgnYe1vail3Q0O8u9bZUAUI83rRZF7W93o+5JepJCK +yrcMed5FZ+71Yo6wFh8Ip1Dzg== X-Google-Smtp-Source: ABdhPJwvIW9IiYxlpkcbkQt8tmAgik541eS8PeQM06VAFcAI9aAjBD1MujGdRq9Puie33WX2z1QICg== X-Received: by 2002:a17:902:a710:b029:12b:9b9f:c461 with SMTP id w16-20020a170902a710b029012b9b9fc461mr12262098plq.59.1631568113182; Mon, 13 Sep 2021 14:21:53 -0700 (PDT) Received: from google.com (150.12.83.34.bc.googleusercontent.com. [34.83.12.150]) by smtp.gmail.com with ESMTPSA id h4sm9572790pgn.6.2021.09.13.14.21.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Sep 2021 14:21:52 -0700 (PDT) Date: Mon, 13 Sep 2021 14:21:49 -0700 From: Ricardo Koller To: Raghavendra Rao Ananta Cc: Paolo Bonzini , Marc Zyngier , Andrew Jones , James Morse , Alexandru Elisei , Suzuki K Poulose , Catalin Marinas , Will Deacon , Peter Shier , Oliver Upton , Reiji Watanabe , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH v5 09/14] KVM: arm64: selftests: Add guest support to get the vcpuid Message-ID: References: <20210913204930.130715-1-rananta@google.com> <20210913204930.130715-10-rananta@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210913204930.130715-10-rananta@google.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Sep 13, 2021 at 08:49:25PM +0000, Raghavendra Rao Ananta wrote: > At times, such as when in the interrupt handler, the guest wants > to get the vcpuid that it's running on to pull the per-cpu private > data. As a result, introduce guest_get_vcpuid() that returns the > vcpuid of the calling vcpu. The interface is architecture > independent, but defined only for arm64 as of now. > > Suggested-by: Reiji Watanabe > Signed-off-by: Raghavendra Rao Ananta > --- > tools/testing/selftests/kvm/include/kvm_util.h | 2 ++ > tools/testing/selftests/kvm/lib/aarch64/processor.c | 6 ++++++ > 2 files changed, 8 insertions(+) > > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index 010b59b13917..5770751a5735 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -400,4 +400,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc); > int vm_get_stats_fd(struct kvm_vm *vm); > int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid); > > +int guest_get_vcpuid(void); > + > #endif /* SELFTEST_KVM_UTIL_H */ > diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c > index db64ee206064..f1255f44dad0 100644 > --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c > +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c > @@ -277,6 +277,7 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TCR_EL1), tcr_el1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_MAIR_EL1), DEFAULT_MAIR_EL1); > set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TTBR0_EL1), vm->pgd); > + set_reg(vm, vcpuid, KVM_ARM64_SYS_REG(SYS_TPIDR_EL1), vcpuid); > } > > void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent) > @@ -426,3 +427,8 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, > assert(vector < VECTOR_NUM); > handlers->exception_handlers[vector][0] = handler; > } > + > +int guest_get_vcpuid(void) > +{ > + return read_sysreg(tpidr_el1); > +} > -- > 2.33.0.309.g3052b89438-goog > Very nice! Reviewed-by: Ricardo Koller