From nobody Mon Jan 10 19:47:59 2022 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 5A8801953EC1; Mon, 10 Jan 2022 19:48:02 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JXkrf0g8tz3N62; Mon, 10 Jan 2022 19:48:02 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from [10.0.1.4] (ralph.baldwin.cx [66.234.199.215]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: jhb) by smtp.freebsd.org (Postfix) with ESMTPSA id 774472C304; Mon, 10 Jan 2022 19:48:01 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Message-ID: <45275428-75e2-aaae-bed3-e5e84b39e17c@FreeBSD.org> Date: Mon, 10 Jan 2022 11:47:59 -0800 List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Content-Language: en-US To: Warner Losh , src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org References: <202201071627.207GRsGX062055@gitrepo.freebsd.org> From: John Baldwin Subject: Re: git: d6c0538dae8d - main - ddb: Remove SOFTWARE_SSTEP support In-Reply-To: <202201071627.207GRsGX062055@gitrepo.freebsd.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1641844082; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ii6VLVQg//AV/w2YsRnTTd6xQwXJ/vRP2WhQqmJsqug=; b=mM9gwhgV9+ty0YKWwBqMHj07WEuBAKpwb+TR83bKABJJAOCUHa/lY9Lm+tqxCrqGNj0ylS JBIPo4e1jwAx7MUHji6yhQnWAAq944u4GpMLN+vMMt4uNwQp3h0CpFfqZEv/j1qu5Gd2AO gMO7lohCJ6TK3QO4N6rYddZHi//0hhOuLLu6Z3p9i0gJGKiJyTA5EcTqHc1t8WOAmLCNl/ MF2oiuM4errW/QlQAV/2FEIVysg79g3iWsPePUWogEvfaNQT+ZHDEYABcLRUmAqDD8VBHv tr5w2bf9r1agp+TU0C+V9USzXGlAgTMYEeTufo0RC1DLaantBN8zHLLG7j4Nyw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1641844082; a=rsa-sha256; cv=none; b=JkbsX4lfBD5l0e3xC68+/s5uSkZj8OzshfryNGYYflb9q3M8+lcb3utC2ReePerIk4yMa+ OKl9uR8rshB2kcXLgh6Ew3unkOEzmCnEBvYoHNnHBF/dSFdrOwtae5mqoRfuFnL95fv2am BVuv8tRgV2L8ta4N3vuApAjzILgKKM5UnjCzJ5iisONTKrWR+NWRVuW5Q2GugkZ14xZaZ9 1/u1UysNKk48ii0ajLfLKpkOIQr1a2pbHgpodjU3D+JQU7hJFLiv43C07EWrFh4VrTHJj6 59n3rN+k/1aPwL1g6SfsvGqxbXE++6rSmK6zUiiR2LSSu8A5jRFP/Gmnq2+d7A== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N On 1/7/22 8:27 AM, Warner Losh wrote: > The branch main has been updated by imp: > > URL: https://cgit.FreeBSD.org/src/commit/?id=d6c0538dae8d138219dfd051994a44c50e741212 > > commit d6c0538dae8d138219dfd051994a44c50e741212 > Author: Warner Losh > AuthorDate: 2022-01-07 16:25:33 +0000 > Commit: Warner Losh > CommitDate: 2022-01-07 16:25:33 +0000 > > ddb: Remove SOFTWARE_SSTEP support > > It was needed for mips only, and only kinda sorta worked for mips. It > can be brought back if we grow another architecture that need it. > > Sponsored by: Netflix RISC-V would need it in theory (no hardware single step), but no one has felt the need to implement the backend support for it. I think 32-bit arm doesn't support hardware single step either (but again, no one has bothered to add the backend support). -- John Baldwin