From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 08D673597B; Mon, 17 Aug 2026 08:53:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786956782; cv=none; b=bJsxmdqeZW+r4IxWu8mWsVl2TeXMIBQAlnIXMRBq35IZVTqBSRbJCIPnJc4LDqms35JFp3s8EHQJkaCWZNUdsX32ft5dFNfkfl2IXmeSk7w332WBPjCoOhUoopaz/g3NPTzAE4jMe855+rg/Yym5koTE/J3aBlRcnpwlDuYnzMc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786956782; c=relaxed/simple; bh=hlArnnRBlxvFxienYxvUPq5zg8b6uZlS1r5dFcXNOUs=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=bicK5IZSQZMI6yIlz9Lx+EXNglD0o9DiVmYA4SPdN5o9gTRrapmveIQBEyW/k97c21GspoA6ZwdUaiEKV9mo1AHhL8SKVtZQEVoOwtuh0ASp6Kza8HN8oMpF6WAb+966nfeG9Xaq5E+clZ12oCwLSimhQI0ExN955WqzNfm5gvk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oVAsPwUG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="oVAsPwUG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91AED1F000E9; Mon, 17 Aug 2026 08:53:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786956780; bh=zZavtv5iKk4G+rubVn2CbRlhboRCftd+KV1d+zlJox4=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=oVAsPwUGV4rgDgDfnEl8zJ4cpHX6o3lNLvLMxxKzmfS5tM/s47Jum+fHCuBrvqdwz FzOYS13ZZ5OgjM91h1GrYxwwGu6b7zrF7gHGwklQBE42D2qbTwNJUyDyFbwxgLIiL1 PnXA6wAuKNFKSUVwWd42mis4QuZXbmkNbXwjb9Y1erV4JZB8Hwc0l54gKNd2TAQX9b HEh5pmJNLEK6GYQq17rNC93caUazgNsdilEg9Ik7kotOJh3NV7wPBnnX6Jx6dWQpJN 9Cr7kntYhNI6razMah8YrtvT9aKAO71U4YQmknhnwkGevvg+38quSCtNuSgzVkS7ma WizxBoeRQUfUw== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wvt5W-0000000GD03-1gGx; Mon, 17 Aug 2026 08:52:58 +0000 Date: Mon, 17 Aug 2026 09:52:58 +0100 Message-ID: <86qzjxyvpx.wl-maz@kernel.org> From: Marc Zyngier To: Like Xu Cc: Oliver Upton , kvmarm@lists.linux.dev, Paolo Bonzini , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Jiaqi Yan Subject: Re: [PATCH] KVM: selftests: arm64: Skip sea_to_user without 1GB hugepages In-Reply-To: <20260817080759.25601-1-likexu@tencent.com> References: <20260817080759.25601-1-likexu@tencent.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: like.xu.linux@gmail.com, oupton@kernel.org, kvmarm@lists.linux.dev, pbonzini@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, jiaqiyan@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false + Jiaqi. On Mon, 17 Aug 2026 09:07:59 +0100, Like Xu wrote: > > sea_to_user backs guest memory with 1GB hugepages but never checks any > are reserved, aborting instead of skipping when the host has none: > > kvm_syscalls.h:68: mem != MAP_FAILED, errno=12 (ENOMEM) > not ok 1 selftests: kvm: sea_to_user # exit=254 > > Check for enough free hugepages up front so the test skips cleanly. See my comments at [1]. This test is totally borked, and Jiaqi stopped replying. It is a liability, and I'd like it *removed*. But if you want to fix it, please go ahead. M. [1] https://lore.kernel.org/all/86y0le9cvz.wl-maz@kernel.org/ -- Without deviation from the norm, progress is not possible.