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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8cb2b2346dasm125436385a.48.2026.02.11.07.04.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Feb 2026 07:04:44 -0800 (PST) Date: Wed, 11 Feb 2026 10:04:41 -0500 From: Gregory Price To: Alison Schofield Cc: Vishal Aslot , Davidlohr Bueso , Jonathan Cameron , Dave Jiang , Vishal Verma , Ira Weiny , Dan Williams , Li Ming , Peter Zijlstra , "open list:COMPUTE EXPRESS LINK (CXL)" , open list Subject: Re: [PATCH v1 1/2] cxl_test: enable zero sized decoders under hb0 Message-ID: References: <20251015024019.1189713-1-vaslot@nvidia.com> <20251015024019.1189713-2-vaslot@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Oct 21, 2025 at 10:03:22AM -0400, Gregory Price wrote: > > Re commit order - Vishal said they do post-lock order > https://lore.kernel.org/linux-cxl/aOP3Kr3jHLWOydRp@gourry-fedora-PF4VCD3F/ > > Post-lock order > [programmable] [zero-lock] [zero-lock] ... [zero-lock] > > Pre-lock order: > [zero-lock] [zero-lock] ... [zero-lock] [programmable] > > My reading of the spec suggests that Post-lock ordering is *not legal*, > and would suggest the software has deviated from the spec - which does > not allow for size-zero decoders to ignore commit order. > Revisiting this - it might be reasonable to allow post-lock ordering if *all* decoders in beyond the programmable one are zero-locked. Seems ok? Thoughts? ~Gregory