From nobody Wed Dec 17 12:06:30 2025 Received: from mail-vs1-f74.google.com (mail-vs1-f74.google.com [209.85.217.74]) (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 0DC4F16CD16 for ; Wed, 10 Jul 2024 23:42:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.217.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720654978; cv=none; b=q4PgXiBKRwZw6XDAhtmHi9U31waoaVllEzD6w/8DO4yMRHbRtOf48xlstwkDaZHn6Ix6fetusMhH789uGOzaPRNKWzJoHExkr8yhG8AGl6ZcIAv7p+uwizFL+7juKKVajpqd80AuWwCGM/S0AI0wZHhWLtvBQfhF+JFzYqLb0D4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720654978; c=relaxed/simple; bh=8593VQW+qY6IG/jYYpHCncdh+HTnZZx/ZSFesd4ewL0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=djvVN03B6xljQnhPKXpxuZnx5UpJPl3EnM2bpk19nmkEl62ozjrMfKcZmmiorIWJXQj18ozXHgNyIk+6dJ8sMP3eczWwzGIjL0/hfmN8s9Ep/OvFDA+k9ltbXs13cphEpK+H7k3iv5hqICIsseiENdGFoeFGS1T9uD/juwYCVAQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthoughton.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Xxpa8ncT; arc=none smtp.client-ip=209.85.217.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jthoughton.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Xxpa8ncT" Received: by mail-vs1-f74.google.com with SMTP id ada2fe7eead31-48feb0d1abdso103703137.0 for ; Wed, 10 Jul 2024 16:42:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1720654974; x=1721259774; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=KrWHeRDFVlfzCLm2guf0VTYM9h/W1rUjUnfwvHRBaDY=; b=Xxpa8ncTdgyuNQ996Gw0ta5/yYEut2AJIhDg3+yQwm/UPIA274rODqe0+bAvn++daV z7pi3hj55R3y+anqcc1egnqgM1VMRqWyqqUXTzM8b04EKorwb2qPzLgmC2S0VOer6rEM uvewnx3ThRcFoOhqtBy9P74tgDmnyIlu+hRI9NiGwBP3hx2dD1l2Kf4MkfoiA9nkMdmy b2EUeR3mUD+MdNVZ5jpEZ4S4W/XYdjha7U1FQuxb1YxTdERolyRmzr5+yCz8Y+9tXEO+ jYEPOhQ6Xq/JHeaih7VRmfmZJsmkJdH122A6LrAUVw5ULn81szmZKaXUkiwNmeAhOaJH r09w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720654974; x=1721259774; 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=KrWHeRDFVlfzCLm2guf0VTYM9h/W1rUjUnfwvHRBaDY=; b=xAblK57fghjbfQtYLrflhwuDvtCgKInEBte0UlbfJl/w2/wMc795CfX5ik7mHg6I1e f3ZpWntutXvaTWJpmmLw7r7qUcu/+EZWgU4X8HEJZOlfanMUCpih4xLwIfFICPpx3Lbv w2g9WXg3rkSLtbNGfjANw6tutdL98rG3qQ7U0NfJrYXZQxlSF1UalG5e/pDRGCeL7jxo qxiWPeUbbvQ78SOuVaaEUxp4FpjYXByxl5cg6l62tbnnW1FrKQEu+fO5+SgiOIFhZ8FZ m1YaAz5LRRyOtxatBGLFbfLITc/xLQVWETM6brNj6MS6oA/GDvMKJnEus2vsmrWZHxNv eJFg== X-Forwarded-Encrypted: i=1; AJvYcCWAXf7JS161SAlbFjrJpQKWMRD9mXW9O1g6lIJS1hREdKvz4xcTsQXsVNwIRfmmvfv2BbRIPfJws07gZ1Gtr/oAZwrxYc6Mcjmqqxt0 X-Gm-Message-State: AOJu0YzMBRbXPdUseZWZE2X0YnvpGBw6NW5mSjlXHihnPekaUL1QzMHR 4NqkAU5PBEeCUvRYtQEPofT/k3OTa7Ypd5dAGrPCYu+gBgUdQRae8EhJQCC7ZKzJ+AqJpow1vDx eCC5d88dvZSi0+Sgmag== X-Google-Smtp-Source: AGHT+IEk1FL65vqiK6UE5KirHXI/3mEOw3BUqoQ0HFsCZaEXrmaSc1CqWM95u18pik8VbBJeKyVeyhW9FRI1OD+8 X-Received: from jthoughton.c.googlers.com ([fda3:e722:ac3:cc00:14:4d90:c0a8:2a4f]) (user=jthoughton job=sendgmr) by 2002:a05:6102:5490:b0:48d:89b6:85d2 with SMTP id ada2fe7eead31-49031dbea2dmr435474137.0.1720654973979; Wed, 10 Jul 2024 16:42:53 -0700 (PDT) Date: Wed, 10 Jul 2024 23:42:20 +0000 In-Reply-To: <20240710234222.2333120-1-jthoughton@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240710234222.2333120-1-jthoughton@google.com> X-Mailer: git-send-email 2.45.2.993.g49e7a77208-goog Message-ID: <20240710234222.2333120-17-jthoughton@google.com> Subject: [RFC PATCH 16/18] KVM: Advertise KVM_CAP_USERFAULT in KVM_CHECK_EXTENSION From: James Houghton To: Paolo Bonzini Cc: Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Sean Christopherson , Shuah Khan , Peter Xu , Axel Rasmussen , David Matlack , James Houghton , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Advertise support for KVM_CAP_USERFAULT when CONFIG_KVM_USERFAULT is enabled. Signed-off-by: James Houghton --- virt/kvm/kvm_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index d2ca16ddcaa1..90ce6b8ff0ab 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -4916,6 +4916,10 @@ static int kvm_vm_ioctl_check_extension_generic(stru= ct kvm *kvm, long arg) #ifdef CONFIG_KVM_PRIVATE_MEM case KVM_CAP_GUEST_MEMFD: return !kvm || kvm_arch_has_private_mem(kvm); +#endif +#ifdef CONFIG_KVM_USERFAULT + case KVM_CAP_USERFAULT: + return 1; #endif default: break; --=20 2.45.2.993.g49e7a77208-goog