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[92.178.7.112]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-45306f76ab3sm97444285e9.14.2025.06.10.08.54.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Jun 2025 08:54:59 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4400e071-4613-11f0-b894-0df219b8e170 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrix.com; s=google; t=1749570900; x=1750175700; darn=lists.xenproject.org; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=U8m9YJLg+99E6gsjvnhPs/q0c77TaqWDCxuVDceHeKE=; b=BS7ZLxamJYgG0bwk2Y3dweoePcpg7UzpK8YoLNUPiTmQIhF78++y5cin+fuIONCA3k On/ZaNNnYWmZ8ijt/f14qLjAAHbMuf0v3mD76oHix/3b+qLrXTDwH9YH5uJhp4PDl7Uz 8qQXyvD2KCTDbN6gfwOy9QgsaSkD9j7pFsYjE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749570900; x=1750175700; h=in-reply-to:content-transfer-encoding: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=U8m9YJLg+99E6gsjvnhPs/q0c77TaqWDCxuVDceHeKE=; b=icNDnJWHEDwvYxSlO9A6tYWqOzAIkpdOyDBq1xFi7yk+LxLPorAb8oZrncFd4wVN4a zcyK+/YUU8Yz3Q/l0KyEgfsKVJeQBWahwxU6ec/qbI65qlF91EHEnmfC/PcnfZmNzhis cJZHWYjtMDOrOktu9Z4FC25rX6aqq7v4UoLChYCAcISVpZG3FWOBkz9+Eftw3PNcPP0n XFVscE0qp1yMpeGVk9T4KNYCJWcU2A2rStLAa7qveOdAqdVIpZ9qOiyFcT617bmSh3+k PDokhTxRIPCa33RZA6u4UiDks2av8QQszt7i/NA2GFiuDXrSZtnAmCb68v95s3uRJ3Vj mEIA== X-Gm-Message-State: AOJu0YzTitBRCGiNITU7q9NJnWbEvvRN4otq9T563DyuZLTk6sEtSBpJ 9G8Lh5MO5y2Agk1bYtPTmvS6vC8DR06FOELA9fF0prksR6jk1RiqjtizMrWT6j7EsTY= X-Gm-Gg: ASbGnct0H7KLDrrkLw6qgOllE3RmC9zaLr0pCV4r9ZJrmiFVjm6hVY7sANjHPR2Yab1 HzU7S7iaSMDEp+GHFS+S3jUdd1VOFlADznzZFD9toWhHQXrpWn/zhgkT+m+bwX4BGaU2Ebngs37 +8C2+AirDEz1eLj4DNgoKy812C+rv3i7hO3Qq98y8GF+Xs11XKxPj90sd3XT3GXceZEmEubAGDx hNgVxv9xXE/ekIPZIO7Lnl2ReSR9TZMjVEi3JIali2QdIGl1jRrevF0xcMoiTsu3TB+JhV9cV0r bBnZs+S0BEiwFWo3vydWXkGK10NxpV00bn91+rRoA11JynmzZJh5QS0D3UkvrAwjBuT3Btih7cl 427W66C/oj7dtOjHpndgyIrTfMqC7PRuZSGs= X-Google-Smtp-Source: AGHT+IHX3fZh8SXwWc9Rzzj68Tf1HCvap96gRTGbYg+Qk6rPEuVjdfRx5txUzADQwvYxF2QaY/+2wQ== X-Received: by 2002:a05:600c:528a:b0:453:dbe:7574 with SMTP id 5b1f17b1804b1-4530efe68f4mr89593305e9.12.1749570900294; Tue, 10 Jun 2025 08:55:00 -0700 (PDT) Date: Tue, 10 Jun 2025 17:54:59 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Jan Beulich Cc: "xen-devel@lists.xenproject.org" , Andrew Cooper Subject: Re: [PATCH v2] x86/HVM: restrict use of pinned cache attributes as well as associated flushing Message-ID: References: <78b3ddeb-4317-4d54-ad52-9eb03bdf7942@suse.com> <6e9e84eb-f98b-4c06-8952-03aecc82c0ea@suse.com> <5f8d694f-e712-4869-879f-80b2c4907a45@suse.com> <3470dcc8-f08a-4a00-8760-b3564d78e638@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <3470dcc8-f08a-4a00-8760-b3564d78e638@suse.com> On Tue, Jun 10, 2025 at 04:13:40PM +0200, Jan Beulich wrote: > On 10.06.2025 15:24, Roger Pau Monné wrote: > > IMO the added complexity here is not worth the performance > > improvement, not without a clear justification that it's needed. > > Well, okay, I'll simply consider the patch in this shape rejected then. > I don't see much value in wasting further time on it. The code is already there, so I think there's value in this patch. Did you see my suggestion in the email yo uare replying to about not needing to add the is_iommu_enabled(d) || cache_flush_permitted(d) checks? With that dropped (if it's indeed OK), I would be fine with Acking the patch. Thanks, Roger.