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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6765C433FE for ; Thu, 7 Oct 2021 23:35:18 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 5443B61076 for ; Thu, 7 Oct 2021 23:35:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5443B61076 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E93864B259; Thu, 7 Oct 2021 19:35:17 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u9byWwQCTe0c; Thu, 7 Oct 2021 19:35:16 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3DD5A4B26A; Thu, 7 Oct 2021 19:35:15 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 29DBF4B25C for ; Thu, 7 Oct 2021 19:35:14 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Tv6ZpxXnRWs3 for ; Thu, 7 Oct 2021 19:35:12 -0400 (EDT) Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 6054B4B238 for ; Thu, 7 Oct 2021 19:35:12 -0400 (EDT) Received: by mail-pl1-f202.google.com with SMTP id n15-20020a170902e54f00b0013ed08c1bacso3925836plf.20 for ; Thu, 07 Oct 2021 16:35:12 -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=nkCzPFgOJztBJ0PQFO3yLXxYkMFo6+sOQFUA9flKBVo=; b=qIEp/mw1Fg8Yf1raio1KjNBQpvMThqVC27jDw7TFFKUVwmSmxIf9kcfbMtMb4xLuh1 TqxDv3zeD7163ziETqd4Nlc/1v7wdrVWClnSpICosTfIwTLVD3nobC2rWO6b2BNvUePO gnLdM09pNNi21tdLYufksj4K1u4PWwI/PNtH9OS4gfhVoKR+//msDWyrzzE61xZUE8Vv RsmVezCne62HXXTub3gBKuC6dIRxtVonEv2VKxAu2YqQSARZ5UxP560D3vhniSVtIQSY UzxexI3EPgtXuHRYrn4pCwLA+GforI1Dd0poR8lm8m3+4iq/rs1m8m9cwZ8KEbgf+t8o x8kA== 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=nkCzPFgOJztBJ0PQFO3yLXxYkMFo6+sOQFUA9flKBVo=; b=yd3yyD1QXvcJF89TYl+pDC7aPtHdvlYmarDgEehGY0jDmdGGv0NOSQh4gvuf703cVt 7l/AvgmwCDqVxPUj06rBlSSmSXBeX6Wx5OL3MVtCRH9oQcx6KlOtnK4FEZFcFsl/Z6Qj IURsrxsib3e5OVlRZ2BWtkMbuLzdRNzr+h1OQsCADAUq9Us8q97ky9bycsT768E7Ea3F hlw+QlxMi3qJY0HoJ1tqiWoGFDfeu763TLhrs6pa0YQsOe9obRLzNA2NyWypygcqLk9H PKmp1Z3GWGhjp1gy1vP42U07Rb3YPvaFd9fv0L5D1Wbz7UFrKVAHtToDi0haN1Yiv/Pj tz4w== X-Gm-Message-State: AOAM531Y4o+rFVJwfg2vggKTCgo004gTPhYm33ey4J6tzyul17wO8zRL 4n3DeWsxXzYxy0xQFCLAm5skCWfGDv1U X-Google-Smtp-Source: ABdhPJyF285C27p4CHJ8ZoPVE07j8+batfUwCNrzEr36gltXnfaZXtP8+IsE/rtmvNVJDMCV0IKk2/DYj4uR X-Received: from rananta-virt.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1bcc]) (user=rananta job=sendgmr) by 2002:a17:902:b188:b029:11b:1549:da31 with SMTP id s8-20020a170902b188b029011b1549da31mr6330570plr.7.1633649711389; Thu, 07 Oct 2021 16:35:11 -0700 (PDT) Date: Thu, 7 Oct 2021 23:34:34 +0000 In-Reply-To: <20211007233439.1826892-1-rananta@google.com> Message-Id: <20211007233439.1826892-11-rananta@google.com> Mime-Version: 1.0 References: <20211007233439.1826892-1-rananta@google.com> X-Mailer: git-send-email 2.33.0.882.g93a45727a2-goog Subject: [PATCH v8 10/15] KVM: arm64: selftests: Add guest support to get the vcpuid From: Raghavendra Rao Ananta To: Paolo Bonzini , Marc Zyngier , Andrew Jones , James Morse , Alexandru Elisei , Suzuki K Poulose Cc: kvm@vger.kernel.org, Catalin Marinas , Peter Shier , linux-kernel@vger.kernel.org, Will Deacon , 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 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 Reviewed-by: Ricardo Koller Reviewed-by: Reiji Watanabe Reviewed-by: Andrew Jones --- 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..bcf05f5381ed 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); +uint32_t 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 34f6bd47661f..b4eeeafd2a70 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, uint32_t vcpuid, struct kvm_vcpu_init 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; } + +uint32_t guest_get_vcpuid(void) +{ + return read_sysreg(tpidr_el1); +} -- 2.33.0.882.g93a45727a2-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm