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[135.19.110.125]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-88652b6d7b0sm73513216d6.41.2025.11.30.18.07.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 30 Nov 2025 18:07:56 -0800 (PST) Subject: Re: [PATCH] arm64: dts: qcom: x1e: bus is 40-bits (fix 64GB models) To: Steev Klimaszewski Cc: abel.vesa@linaro.org, andersson@kernel.org, christopher.obbard@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, konradybcio@kernel.org, krzk+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_rjendra@quicinc.com, robh@kernel.org, sibi.sankar@oss.qualcomm.com, stephan.gerhold@linaro.org References: <35615ad4-5b86-577f-4695-c6cd85206334@marek.ca> <20251201001353.9852-1-threeway@gmail.com> From: Jonathan Marek Message-ID: <4e3c1c5d-fee9-d4d8-8b06-d33210c5819e@marek.ca> Date: Sun, 30 Nov 2025 21:06:49 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <20251201001353.9852-1-threeway@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit I was curious about this so I tried booting EL1 - 32GB CRD boots fine - 64GB T14S boots with CONFIG_ARM64_VA_BITS_39 (except display driver didn't probe, because it depends on adsp firmware, lol). without CONFIG_ARM64_VA_BITS_39 it resets Anyway making things worse for "64GB+EL1+broken firmware" shouldn't block this patch, because "64GB+EL1+broken firmware" needs workarounds anyway and this change is needed to use 64GB without issues otherwise. On 11/30/25 7:13 PM, Steev Klimaszewski wrote: > Hi All, > > On my Thinkpad T14S OLED with 64GB, with this patch applied, I am unable to boot > the laptop anymore. It doesn't matter whether I have mem=30GB, nor if I set > CONFIG_ARM64_VA_BITS_39, or not limiting the ram - shortly after loading the > device tree, the laptop just resets. > > I have tried over 20 boots with it applied, as well as trying both booting a > working kernel, and then rebooting as well as cold boots. > > > -- steev > .