From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63141A93A for ; Wed, 12 Apr 2023 21:35:24 +0000 (UTC) Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-54f8b46f399so40043257b3.10 for ; Wed, 12 Apr 2023 14:35:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1681335323; x=1683927323; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=uHo5QQHeSuM2EtVp0WZkAVQAlrFLxra0Ir0r+Emw+q4=; b=sa+XBYOkX2d/Tu87yvD3UhP5nhC7As51Olcx+W/RSEY/FGJuNDurfGxnX//1FqsoM2 PJTt3/hUG7FrXNKJiVjFgxDx7oahgt4JlSXSeXB7SuChwWitdUEUlqC13KbMvt9pAe5b zArqJRTUKp7mKE6YJmU9VTtlAuOdBuED2zJNjYiJQGU4IdX1hTel0j5u28jgfcUoLPuM UcSNN40jmwOi2rQ3p+pwHCL+Lzc4bweXDCbWWTR7hgoE/VkKJ3GoZ07ZMgQq8SUMudLk dwcDtmojhM9j6Jpn97L/vupf06dWUHVzfFDZhSr5ygLVJGg8y2SUDVOmW1Ps1ad3Wrad 9zGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681335323; x=1683927323; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uHo5QQHeSuM2EtVp0WZkAVQAlrFLxra0Ir0r+Emw+q4=; b=YSjNbX1kj0AB2xf+S6zdPdEnsRj/BW8Y+UzkKCh+ui/jD+RxvRLpMgc/CW9rK10kG8 AbvbURHeDM3+sl8jOeln67usH/H3neWcq8QrspVe+UIwGRXcwvhqTtlthtaNaBc99Nhg lwjXuPxOF4oerxoJxC5L7Bd7kwBc0QEbaPFW3jxm67/nHZTkwmX4d8MIGcGIHs/trj8G rVt1ismmoBZWjb/yU91yu2hLnfJd5f90ok18tzr95MCp5vIuc3dsWDb9nFuhOxAcfJQU WVWLACT0Zw5grSvbCBAC6LRJJJAnXyj5qj8MLkTeJ9cElClpPuwWh1/0S8cm0P8GeV18 Zevg== X-Gm-Message-State: AAQBX9ezYxh8Ooqve6naQLcaM7ByuE9rfXv8ZQvaDN9/4c93IIyl9DGL aO68Zg6lCGfMk0cMGsGU+ye08geYqzOgzQ== X-Google-Smtp-Source: AKy350Z2PC9zVB+t1rGgWRL74ikHOAYhj1EdKpabNbisfi4nEhLfjYbZhgRy3U2heOy2zhj+WgIR06d2qDQXMQ== X-Received: from laogai.c.googlers.com ([fda3:e722:ac3:cc00:2b:7d90:c0a8:2c9]) (user=amoorthy job=sendgmr) by 2002:a25:6c07:0:b0:b8b:eea7:525a with SMTP id h7-20020a256c07000000b00b8beea7525amr9848148ybc.7.1681335323435; Wed, 12 Apr 2023 14:35:23 -0700 (PDT) Date: Wed, 12 Apr 2023 21:34:57 +0000 In-Reply-To: <20230412213510.1220557-1-amoorthy@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230412213510.1220557-1-amoorthy@google.com> X-Mailer: git-send-email 2.40.0.577.gac1e443424-goog Message-ID: <20230412213510.1220557-10-amoorthy@google.com> Subject: [PATCH v3 09/22] KVM: Annotate -EFAULTs from kvm_vcpu_map() From: Anish Moorthy To: pbonzini@redhat.com, maz@kernel.org Cc: oliver.upton@linux.dev, seanjc@google.com, jthoughton@google.com, amoorthy@google.com, bgardon@google.com, dmatlack@google.com, ricarkol@google.com, axelrasmussen@google.com, peterx@redhat.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Implement KVM_CAP_MEMORY_FAULT_INFO for efaults generated by kvm_vcpu_map(). Signed-off-by: Anish Moorthy --- virt/kvm/kvm_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 572adba9ad8ed..f3be5aa49829a 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2843,8 +2843,10 @@ int kvm_vcpu_map(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map) #endif } - if (!hva) + if (!hva) { + kvm_populate_efault_info(vcpu, gfn * PAGE_SIZE, PAGE_SIZE); return -EFAULT; + } map->page = page; map->hva = hva; -- 2.40.0.577.gac1e443424-goog