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 E2CB0C636CD for ; Fri, 10 Feb 2023 06:48:37 +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=iEVrLW2v4XarvfwbesXNYVHPDw8wcCcq6+ts2M8fGe8=; b=T+gVEjXk15DKqM uci3e0Tm6ksMKvN1zcx9Hsqb+bbFy9x5whPPV1AQX60YQwFpkk5Z+h1aLXT+8vbL/KAIfFV1/gGMh sf9H03J09OIxc/reD72X8XJK/TxqcVEaMib713RU8IEMSl3XZtDGvlPQiQndLBJlg903dqP0JGfx3 bLv8hn1LeOaWj7+1p4qAIlhg40RWI0CP8d1JyXMRmWSPw94C6KcoO6n38daYqxRL5SntopNCG5pIr rSV8ynrd19PMPzENBna4/IRznWNVHcw+kttlE63yOOGSumVSBcOlFGjIowV9xatM+G373u0hPMMic EyNCRfdO9tDycz7BkqxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pQNCs-004VtE-UE; Fri, 10 Feb 2023 06:48:26 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pQNCp-004Vs9-LC for linux-riscv@lists.infradead.org; Fri, 10 Feb 2023 06:48:25 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AF38061CBB; Fri, 10 Feb 2023 06:48:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E180C433D2; Fri, 10 Feb 2023 06:48:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1676011702; bh=b6Oc5ZzVG7nkvmdk4QiD1WgVKwZk2maRbTIji6Y1fRs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=E/mNkwkhzmWnBepo6lLnMq2Hy8LeFdqTjsvG9JKYOHiE3I/OTk2GACwE/E1kBhDwQ SsexiB9LjVzuhFVNyP232bjlM6QwapGkfcBJ6shtGvQWoQIQb/oyi1re+7V5Rinbrx 4PZpgtZNXiGKHAaG4ZW91ELrOP7LaTvQkDp4gW0w= Date: Fri, 10 Feb 2023 07:48:18 +0100 From: Greg KH To: Jessica Clarke Cc: Evan Green , Conor Dooley , Palmer Dabbelt , Vineet Gupta , Heiko Stuebner , slewis@rivosinc.com, Albert Ou , Andrew Bresticker , Andrew Jones , Anup Patel , Arnd Bergmann , Atish Patra , Bagas Sanjaya , Celeste Liu , Conor Dooley , Dao Lu , Guo Ren , Jonathan Corbet , Palmer Dabbelt , Paul Walmsley , Randy Dunlap , Ruizhe Pan , Sunil V L , Tobias Klauser , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH v2 2/6] RISC-V: Add a syscall for HW probing Message-ID: References: <20230206201455.1790329-1-evan@rivosinc.com> <20230206201455.1790329-3-evan@rivosinc.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230209_224823_809763_1CCEB7F2 X-CRM114-Status: GOOD ( 40.21 ) X-BeenThere: linux-riscv@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="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gVGh1LCBGZWIgMDksIDIwMjMgYXQgMDU6MjI6MDlQTSArMDAwMCwgSmVzc2ljYSBDbGFya2Ug d3JvdGU6Cj4gT24gOSBGZWIgMjAyMywgYXQgMTc6MTMsIEdyZWcgS0ggPGdyZWdraEBsaW51eGZv dW5kYXRpb24ub3JnPiB3cm90ZToKPiA+IE9uIFRodSwgRmViIDA5LCAyMDIzIGF0IDA5OjA5OjE2 QU0gLTA4MDAsIEV2YW4gR3JlZW4gd3JvdGU6Cj4gPj4gT24gTW9uLCBGZWIgNiwgMjAyMyBhdCAx MDozMiBQTSBDb25vciBEb29sZXkgPGNvbm9yQGtlcm5lbC5vcmc+IHdyb3RlOgo+ID4+PiAKPiA+ Pj4gSGV5IEV2YW4sIEdyZWcsCj4gPj4+IAo+ID4+PiAKPiA+Pj4gT24gNyBGZWJydWFyeSAyMDIz IDA2OjEzOjM5IEdNVCwgR3JlZyBLSCA8Z3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5vcmc+IHdyb3Rl Ogo+ID4+Pj4gT24gTW9uLCBGZWIgMDYsIDIwMjMgYXQgMTI6MTQ6NTFQTSAtMDgwMCwgRXZhbiBH cmVlbiB3cm90ZToKPiA+Pj4+PiBXZSBkb24ndCBoYXZlIGVub3VnaCBzcGFjZSBmb3IgdGhlc2Ug YWxsIGluIEVMRl9IV0NBUHssMn0gYW5kIHRoZXJlJ3Mgbm8KPiA+Pj4+PiBzeXN0ZW0gY2FsbCB0 aGF0IHF1aXRlIGRvZXMgdGhpcywgc28gbGV0J3MganVzdCBwcm92aWRlIGFuIGFyY2gtc3BlY2lm aWMKPiA+Pj4+PiBvbmUgdG8gcHJvYmUgZm9yIGhhcmR3YXJlIGNhcGFiaWxpdGllcy4gIFRoaXMg Y3VycmVudGx5IGp1c3QgcHJvdmlkZXMKPiA+Pj4+PiBte2FyY2gsaW1wLHZlbmRvcn1pZCwgYnV0 IHdpdGggdGhlIGtleS12YWx1ZSBwYWlycyB3ZSBjYW4gcGFzcyBtb3JlIGluCj4gPj4+Pj4gdGhl IGZ1dHVyZS4KPiA+Pj4+IAo+ID4+Pj4gSWNrLCB0aGlzIGlzIGV4YWN0bHkgd2hhdCBzeXNmcyBp cyBkZXNpZ25lZCB0byBleHBvcnQgaW4gYSBzYW5lIHdheS4KPiA+Pj4+IFdoeSBub3QganVzdCB1 c2UgdGhhdCBpbnN0ZWFkPyAgVGhlICJrZXkiIHdvdWxkIGJlIHRoZSBmaWxlbmFtZSwgYW5kIHRo ZQo+ID4+Pj4gdmFsdWUgdGhlIHZhbHVlIHJlYWQgZnJvbSB0aGUgZmlsZW5hbWUuICBJZiB0aGUg a2V5IGlzIG5vdCBwcmVzZW50LCB0aGUKPiA+Pj4+IGZpbGUgaXMgbm90IHByZXNlbnQgYW5kIGl0 J3Mgb2J2aW91cyB3aGF0IGlzIGhhcHBlbmluZywgbm8gZmFuY3kgcGFyc2luZwo+ID4+Pj4gYW5k IEFCSSBpc3N1ZXMgYXQgYWxsLgo+ID4+PiAKPiA+Pj4gaHR0cHM6Ly9sb3JlLmtlcm5lbC5vcmcv bGludXgtcmlzY3YvMjAyMjEyMDExNjA2MTQueHBvbWxxcTJmenB6Zm1jbUBrYW16aWsvCj4gPj4+ IAo+ID4+PiBUaGlzIGlzIHRoZSBzeXNmcyBpbnRlcmZhY2UgdGhhdCBJIG1lbnRpb25lZCBkcmV3 Cj4gPj4+IHN1Z2dlc3RlZCBvbiB0aGUgdjEuCj4gPj4+IEkgdGhpbmsgaXQgZml0cyB+cGVyZmVj dGx5IHdpdGggd2hhdCBHcmVnIGlzIHN1Z2dlc3RpbmcgdG9vLgo+ID4+IAo+ID4+IFdob29wcywg SSdsbCBhZG1pdCBJIG1pc3NlZCB0aGF0IGNvbW1lbnQgd2hlbiBJIHJldmlld2VkIHRoZSBmZWVk YmFjawo+ID4+IGZyb20gdjEuIEkgc3BlbnQgc29tZSB0aW1lIHRoaW5raW5nIGFib3V0IHN5c2Zz LiBUaGUgcHJvYmxlbSBpcyB0aGlzCj4gPj4gaW50ZXJmYWNlIHdpbGwgYmUgbmVlZGVkIGluIHBs YWNlcyBsaWtlIHZlcnkgZWFybHkgcHJvZ3JhbSBzdGFydHVwLiBJZgo+ID4+IHdlJ3JlIHRyeWlu ZyB0byB1c2UgdGhpcyBpbiBwbGFjZXMgbGlrZSB0aGUgaWZ1bmMgc2VsZWN0b3IgdG8gZGVjaWRl Cj4gPj4gd2hpY2ggbWVtY3B5IHRvIHVzZSwgaGF2aW5nIHRvIGdvIG9wZW4gYW5kIHJlYWQgYSBm aXN0ZnVsIG9mIGZpbGVzIGlzCj4gPj4gZ29pbmcgdG8gYmUgY29tcGxleCB0aGF0IGVhcmx5LCBh bmQgcm91Z2ggb24gcGVyZm9ybWFuY2UuCj4gPiAKPiA+IEhvdyBpcyBpdCBnb2luZyB0byBiZSBh bnkgZGlmZmVyZW50IG9uICJwZXJmb3JtYW5jZSIgdGhhbiBhIHN5c2NhbGw/ICBPcgo+ID4gY29t cGxleD8gIEl0IHNob3VsZCBiZSBhbG1vc3QgaWRlbnRpY2FsIG92ZXJhbGwgYXMgdGhpcyBpcyBh bGwgaW4tcmFtCj4gPiBhbmQgbm90IGFueSByZWFsIEkvbyBpcyBoYXBwZW5pbmcuICBZb3UgYXJl IGxpbWl0ZWQgb25seSBieSB0aGUgc3BlZWQgb2YKPiA+IHlvdXIgY3B1Lgo+ID4gCj4gPj4gUmVh bGx5IHRoaXMgaXMgZGF0YSB0aGF0IHdvdWxkIGdvIGdyZWF0IGluIHRoZSBhdXggdmVjdG9yLCBl eGNlcHQKPiA+PiB0aGVyZSdzIHByb2JhYmx5IHRvbyBtdWNoIG9mIGl0IHRvIGp1c3RpZnkgcHJl cGFyaW5nIGFuZCBjb3B5aW5nIGludG8KPiA+PiBldmVyeSBuZXcgcHJvY2Vzcy4gWW91IGNvdWxk IHBvaW50IHRoZSBhdXggdmVjdG9yIGludG8gYSB2RFNPIGRhdGEKPiA+PiBhcmVhLiBUaGlzIGhh cyB0aGUgYWR2YW50YWdlIG9mIGdyZWF0IHBlcmZvcm1hbmNlIGFuZCBubyBzeXNjYWxsLCBidXQK PiA+PiBoYXMgdGhlIGRpc2FkdmFudGFnZXMgb2YgbWFraW5nIHRoYXQgZGF0YSBBQkksIGFuZCBy ZXF1aXJpbmcgaXQgYWxsIHRvCj4gPj4gYmUga25vd24gdXAgZnJvbnQgKGVnIHRoZSBrZXJuZWwg Y2FuJ3QgY29tcHV0ZSBhbnkgYW5zd2VycyBvbiB0aGUKPiA+PiBmbHkpLgo+ID4+IAo+ID4+IEFm dGVyIGRpc2N1c3Npb25zIHdpdGggUGFsbWVyLCBteSBwbGFuIGZvciB0aGUgbmV4dCB2ZXJzaW9u IGlzIHRvIG1vdmUKPiA+PiB0aGlzIGludG8gYSB2RFNPIGZ1bmN0aW9uIHBsdXMgYSBzeXNjYWxs LiBQcml2YXRlIHZEU08gZGF0YSB3aWxsIGJlCj4gPj4gcHJlcHBlZCB3aXRoIGNvbW1vbiBhbnN3 ZXJzIGZvciB0aGUgImFsbCBDUFVzIiBjYXNlLCBhdm9pZGluZyB0aGUgbmVlZAo+ID4+IGZvciBh IHN5c2NhbGwgaW4gbW9zdCBjYXNlcyBhbmQgbWFraW5nIHRoaXMgZmFzdC4gU2luY2UgdGhlIGRh dGEgaXMKPiA+PiBoaWRkZW4gYmVoaW5kIHRoZSB2ZHNvIGZ1bmN0aW9uLCBpdCdzIG5vdCBBQkks IHdoaWNoIGlzIGEgcGx1cy4gVGhlbgo+ID4+IHRoZSB2ZHNvIGZ1bmN0aW9uIGNhbiBmYWxsIGJh Y2sgdG8gdGhlIHN5c2NhbGwgZm9yIGNhc2VzIHdpdGggZXhvdGljCj4gPj4gQ1BVIG1hc2tzIG9y IGtleXMgdGhhdCBhcmUgdW5rbm93bi9leHBlbnNpdmUgdG8gY29tcHV0ZSBhdCBydW50aW1lLgo+ ID4gCj4gPiBJIHN0aWxsIHRoaW5rIHRoYXQncyB3cm9uZywgYXMgeW91IGFyZSB3YW50aW5nIGEg c2V0IG9mIGtleS92YWx1ZXMgaGVyZSwKPiA+IHdoaWNoIGlzIGV4YWN0bHkgd2hhdCBzeXNmcyBp cyBkZXNpZ25lZCBmb3IuCj4gCj4gQnV0IHRoaXMgbmVlZHMgdG8gYmUgYSBSSVNDLVYgc3RhbmRh cmQgaW50ZXJmYWNlIHRoYXQgY2FuIGJlIHByb2dyYW1tZWQKPiBhZ2FpbnN0LCBub3Qgc29tZXRo aW5nIHRpZWQgdG8gaGlnaGx5IExpbnV4LXNwZWNpZmljIHRoaW5ncyBsaWtlIHN5c2ZzLgo+IFlv deKAmXJlIGZyZWUgdG8gaW1wbGVtZW50IHRoYXQgaW50ZXJmYWNlIHdpdGggc3lzZnMsIGJ1dCBl eHBvc2luZyB0aGF0Cj4gYXMgKnRoZSogaW50ZXJmYWNlIHRvIHVzZSB3b3VsZCBiZSB0ZXJyaWJs ZSBmb3IgcG9ydGFiaWxpdHkuCgpBIHZkc28gYW5kIGEgbmV3IGtlcm5lbCBzeXNjYWxsIGlzIGFs c28gYSBoaWdobHkgTGludXgtc3BlY2lmaWMgdGhpbmcsCnNvIEkgZG8gbm90IHVuZGVyc3RhbmQg dGhlIG9iamVjdGlvbiBoZXJlIGF0IGFsbC4gIFlvdSdyZSBnb2luZyB0byBoYXZlCnRvIHdyYXAg YWxsIG9mIHRoaXMgdXAgaW4gc29tZSBzb3J0IG9mIGNvbW1vbiB1c2Vyc3BhY2UgbGlicmFyeSBj b2RlCmFueXdheSwgYW5kIHRoYXQgd2lsbCBoYXZlIHRvIGhhbmRsZSBhbGwgb2YgdGhlIGRpZmZl cmVudCBvcGVyYXRpbmcKc3lzdGVtIGltcGxlbWVudGF0aW9ucy4KCkFsc28sIGZyYW5rbHksIEkg ZG9uJ3QgY2FyZSBhYm91dCBub24tTGludXggaW1wbGVtZW50YXRpb25zLCBzbyB0aGF0Cmlzbid0 IGEgdmFsaWQgYXJndW1lbnQgaGVyZSA6KQoKdGhhbmtzLAoKZ3JlZyBrLWgKCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcg bGlzdApsaW51eC1yaXNjdkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRl YWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcmlzY3YK