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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id CC3C4EB64D9 for ; Tue, 27 Jun 2023 09:10:18 +0000 (UTC) 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=fxI/knUJXJGDG9nOpntTgYH0vxJs9Fktfffgw7etT6c=; b=OypJW6LXL3v9Tl kK6kcndh2GEQgn3dWaIIJynm5wmUnqlSp85mPaqPatb0tEQxjQ4D12c8NcKCkhcabPEosRYAT6Rdo n7v/uL2G6OdU3AsZw6ZdWL0ATM19vBQQ4xUOPug8U85ay4xyiP6uifeWgGM0sr206WJmRJii57D3R 2vCGOd4LNOL3ftE2gCrgimcIJbgJgkKt/ktp+ndxhtiCUCQ/Odcb7AL/B9zfh47G98VJOw6k4cmEs F47GxrjfwdEseD4WyUmJjTv7bWzPg3d2J7vKplLqLpz87Ax73LkaUhv7BBZ8s7Hzw/Xn3wylRsGmv 0/wVBFwuUKdGt3d3/Ktw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qE4hq-00CeJX-0p; Tue, 27 Jun 2023 09:09:50 +0000 Received: from mail-ed1-x534.google.com ([2a00:1450:4864:20::534]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qE4ho-00CeFn-0n for linux-arm-kernel@lists.infradead.org; Tue, 27 Jun 2023 09:09:49 +0000 Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-51d7f4c1cfeso4373275a12.0 for ; Tue, 27 Jun 2023 02:09:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1687856970; x=1690448970; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=R0dPPN6kCxjJ5erU6C8GI2QpZR2Odnb/ktBK6lqyvdY=; b=eZMzvYYkDo8EfR7GYZC2UEnZSGriHw1BzLCiOfGra3b2gqub9gEyeftBpgrsE1Us2o 6JFZLDMOSh92+JS5MZ8TD+vn5oJrWDH9kD7RhVcSTc6pdjTmRzo/XgWxOHvGQ1NE1lbk jj1kvNlyxa+p46PiIy/BuVrkH2bfc9U3Xil7zkB2GQ93+HVIkPsktCI+rx8rlNQ1hDrs l946asInJqI5DBhG9fmf0hvBTKRlMttnOpX2bZ7N0+OIzUcF4Voh365nwihT8sINjk9D XYiSnoYfIaGsCm8wmUxhO/obTZwOD/O99AOzfjGeeM9upJVj16dWxdKE1bixlQt8yXsG kl5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687856970; x=1690448970; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=R0dPPN6kCxjJ5erU6C8GI2QpZR2Odnb/ktBK6lqyvdY=; b=bVY9J8M/HOsT9PkMYiUc1QI9ckU1+ObNWOxGQrGiGvgSFfmWJ4ZxQXyZirWhAbS7oL 1oM/9FCLPvEYITLUPLs5TW/Y2Q8CWVtVdmvKp7MQrT0B3kICGAuwWGasHT5Ihd/g7GDG daZxQFKpxoUzy6yDLR9RYq+vhuXB047cPVYnuHRYrGbXXaOsUU64nKPQORxDjdESk/q5 Mv2XMuKlhjbQxWEEinGoqNeCPNQosugBHRVE7Pv4z47BG40t+Ho2J7oeo5WGszcYqA4F nXyYh5ILiHI8K/siQ+G5hpW8ohSHm2oFjhkNltsO4+XHNdFr0ZoCLsWESma4qTdvRNO8 zCAQ== X-Gm-Message-State: AC+VfDz3MoSqZnXCfHgIlEL8w3YHqqM1oFCbX8sDjPTIvcf2ivSSOC0T 7njgg9qp8L70fqqZgpAtUytyRQ== X-Google-Smtp-Source: ACHHUZ4JTx2HNgMrDX8zs9F7AE78EPk6RMDfso94B/r0ax0vwcVieNX1DoGrYahuA+FJpIr1APh3ag== X-Received: by 2002:aa7:d784:0:b0:51b:d49c:8c36 with SMTP id s4-20020aa7d784000000b0051bd49c8c36mr15262930edq.16.1687856970460; Tue, 27 Jun 2023 02:09:30 -0700 (PDT) Received: from localhost (2001-1ae9-1c2-4c00-20f-c6b4-1e57-7965.ip6.tmcz.cz. [2001:1ae9:1c2:4c00:20f:c6b4:1e57:7965]) by smtp.gmail.com with ESMTPSA id y19-20020aa7d513000000b0051d8a512472sm3133032edq.51.2023.06.27.02.09.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jun 2023 02:09:29 -0700 (PDT) Date: Tue, 27 Jun 2023 11:09:28 +0200 From: Andrew Jones To: Haibo Xu Cc: xiaobo55x@gmail.com, maz@kernel.org, oliver.upton@linux.dev, seanjc@google.com, Paolo Bonzini , Jonathan Corbet , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Shuah Khan , James Morse , Suzuki K Poulose , Zenghui Yu , David Matlack , Ben Gardon , Ricardo Koller , Vishal Annapurve , Vipin Sharma , Colton Lewis , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Subject: Re: [PATCH v4 08/12] KVM: arm64: selftests: Move reject_set check logic to a function Message-ID: <20230627-4d207186c4ef81be43c9d874@orel> References: <341feff384c9f8a20ed4aac6e2dda0440d6b84f2.1687515463.git.haibo1.xu@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <341feff384c9f8a20ed4aac6e2dda0440d6b84f2.1687515463.git.haibo1.xu@intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230627_020948_283243_DA7F5123 X-CRM114-Status: GOOD ( 26.52 ) 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 Fri, Jun 23, 2023 at 06:40:10PM +0800, Haibo Xu wrote: > No functional changes. Just move the reject_set check logic to a > function so we can check for specific errno for specific register. > This is a preparation for support reject_set in riscv. > > Suggested-by: Andrew Jones > Signed-off-by: Haibo Xu > --- > tools/testing/selftests/kvm/aarch64/get-reg-list.c | 8 ++++++++ > tools/testing/selftests/kvm/get-reg-list.c | 7 ++++++- > 2 files changed, 14 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c > index aaf035c969ec..4e2e1fe833eb 100644 > --- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c > +++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c > @@ -27,6 +27,14 @@ bool filter_reg(__u64 reg) > return false; > } > > +bool reject_set_fail(__u64 reg) > +{ > + if (reg == KVM_REG_ARM64_SVE_VLS) > + return (errno != EPERM); > + > + return false; > +} I think we should pass errno in as a parameter and I prefer positive predicate functions, so I'd name this check_reject_set() and reverse the logic. Also, we don't want to check for KVM_REG_ARM64_SVE_VLS, because that duplicates the rejects set. I see in a later patch that riscv needs to check reg because different errors are used for different registers, but that's because KVM_REG_RISCV_TIMER_REG(state) was erroneously added to the rejects set. KVM_REG_RISCV_TIMER_REG(state) doesn't belong there. That register can be set, but it only supports certain input, otherwise, it correctly, results in EINVAL. We'll need the concept of a "skip set" to avoid tripping over that one. So, I think arm's function should be bool check_reject_set(int errno) { return errno == EPERM; } and riscv's should be bool check_reject_set(int errno) { return errno == EOPNOTSUPP; } > + > #define REG_MASK (KVM_REG_ARCH_MASK | KVM_REG_SIZE_MASK | KVM_REG_ARM_COPROC_MASK) > > #define CORE_REGS_XX_NR_WORDS 2 > diff --git a/tools/testing/selftests/kvm/get-reg-list.c b/tools/testing/selftests/kvm/get-reg-list.c > index f6ad7991a812..b956ee410996 100644 > --- a/tools/testing/selftests/kvm/get-reg-list.c > +++ b/tools/testing/selftests/kvm/get-reg-list.c > @@ -98,6 +98,11 @@ void __weak print_reg(const char *prefix, __u64 id) > printf("\t0x%llx,\n", id); > } > > +bool __weak reject_set_fail(__u64 reg) > +{ > + return false; > +} > + > #ifdef __aarch64__ > static void prepare_vcpu_init(struct vcpu_reg_list *c, struct kvm_vcpu_init *init) > { > @@ -216,7 +221,7 @@ static void run_test(struct vcpu_reg_list *c) > if (s->rejects_set && find_reg(s->rejects_set, s->rejects_set_n, reg.id)) { > reject_reg = true; > ret = __vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); > - if (ret != -1 || errno != EPERM) { > + if (ret != -1 || reject_set_fail(reg.id)) { > printf("%s: Failed to reject (ret=%d, errno=%d) ", config_name(c), ret, errno); > print_reg(config_name(c), reg.id); > putchar('\n'); > -- > 2.34.1 > Thanks, drew _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel