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[2001:1c00:c32:7800:518e:e42f:e83f:43ae]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bfdb4420179sm712199366b.8.2026.06.16.13.40.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Jun 2026 13:40:11 -0700 (PDT) Message-ID: <829fa641-dbd4-4319-90a2-99a24934e0df@oss.qualcomm.com> Date: Tue, 16 Jun 2026 22:40:10 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Hans de Goede Subject: Re: [PATCH 1/2] arm64: dts: qcom: hamoa: Fix xbl_tmp_buffer_mem size To: Konrad Dybcio , Bjorn Andersson , Konrad Dybcio Cc: Krzysztof Kozlowski , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org References: <20260525114749.5939-1-johannes.goede@oss.qualcomm.com> <20260525114749.5939-2-johannes.goede@oss.qualcomm.com> <7d2aedb2-4bcd-4453-80be-5c7ca6bdff95@oss.qualcomm.com> <7ebbddb0-175b-4023-91ee-93d23e5162ba@oss.qualcomm.com> <21a97c4b-293f-435c-91fe-ca7394b5a2b0@oss.qualcomm.com> Content-Language: en-US, nl In-Reply-To: <21a97c4b-293f-435c-91fe-ca7394b5a2b0@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: HE469UKbbYUnb2NCraXzvSHWZHTYtMnE X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE2MDIxMCBTYWx0ZWRfXzVZvAjSEyO+J C1xyXP2/YcpGaMbveyLLhZS8mqI4xIQLJ0RsFcFtkuGYPZl3mSHGPDVDBvWJgt5oJq6Cj66Gw/8 1G/pdfjYz3wo+QAQE8SpVfPjORh6LoU= X-Authority-Analysis: v=2.4 cv=WNdPmHsR c=1 sm=1 tr=0 ts=6a31b4af cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=Vsc-HiIW_TZ0MqiB9scA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE2MDIxMCBTYWx0ZWRfX/+ZX9zboBMwc 8JLyv/5wSwL/naz+QzKNOsqNoPpX+QSFUaL0ZDtig4QGKv6m5ZxtZDMbT6DxmrNwBIfmnTBG4wG assjGUWb7lWfo134QViG1jdLMcstGbBDSudXQG+98+OydouMClyeGhx6ZW9mQ7hU1Qwm3kG+C/w k/FK7A22j3u6vpT+I+W2kwiCRICwkfTiAhk228KE4kchUtzx69NLUBqYtkwpSpEocIlWrKE+r1n P/asHqGgSLJ2hxoISSqTn6b6TBEc05IC5H41sQvMBGbG9T3fOqrHuyYWsqOnNpsnH3oeiGd6HCB BN+6PfY5PygIiBNUqOUJU0UamAujyZY6gDBc8xKgGLkoSGAR/Oq1+OxRJEsYIAgFImpfCNfwjCI JGZ4rFhCyC/Hr2VE+pnONQaXrC7LAMsQ8wGMQ8hBjrlaZc+3GzNvx606wSVenNgZ5pQdRgxMIJo mlkn4Kd+8jxa+nazU9w== X-Proofpoint-ORIG-GUID: HE469UKbbYUnb2NCraXzvSHWZHTYtMnE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-16_05,2026-06-16_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 bulkscore=0 malwarescore=0 clxscore=1015 suspectscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606160210 Hi konrad, On 16-Jun-26 1:04 PM, Konrad Dybcio wrote: > On 5/25/26 2:46 PM, Hans de Goede wrote: >> Hi, >> >> On 25-May-26 14:29, Konrad Dybcio wrote: >>> On 5/25/26 1:47 PM, Hans de Goede wrote: >>>> The EFI memtable (shown when booting with efi=debug) shows that the >>>> xbl_tmp_buffer_mem region size is 0x1c0000 bytes large not 0xc00000 bytes: >>>> >>>> efi: 0x000082800000-0x0000829bffff [Reserved | >>>> efi: 0x0000829c0000-0x000083efffff [Conventional| >>>> >>>> This fix aligns the size with the EFI reported size and makes /proc/iomem >>>> correctly show mem blocks matching the EFI memmap: >>>> >>>> 82800000-829bffff : reserved >>>> 829c0000-83efffff : System RAM >>>> >>>> Instead of: >>>> >>>> 82800000-833fffff : reserved >>>> 83400000-83efffff : System RAM >>>> >>>> before this change >>>> >>>> Signed-off-by: Hans de Goede >>>> --- >>>> arch/arm64/boot/dts/qcom/hamoa.dtsi | 2 +- >>>> 1 file changed, 1 insertion(+), 1 deletion(-) >>>> >>>> diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi >>>> index de0f2346cb38..5a2e84365901 100644 >>>> --- a/arch/arm64/boot/dts/qcom/hamoa.dtsi >>>> +++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi >>>> @@ -582,7 +582,7 @@ tz_stat_mem: tz-stat@82700000 { >>>> }; >>>> >>>> xbl_tmp_buffer_mem: xbl-tmp-buffer@82800000 { >>>> - reg = <0x0 0x82800000 0x0 0xc00000>; >>>> + reg = <0x0 0x82800000 0x0 0x1c0000>; >>> >>> FWIW the reference memory map shows a contiguous block of: >>> >>> 0x8280_0000 -> "no reclaim XBL scratch_buffer2" >>> 0x829c_0000 -> "reclaimable XBL scratch_buffer" >>> 0x83f0_0000-0x8400_0000 -> "no reclaim xbl scratch_buffer1" >> >> Thanks, so the first part here 0x8280_0000 - 0x829c_0000 >> aligns with the EFI reservation and with the dts reservation >> after my patch. >> >> 0x829c_0000 - 0x83f0_0000 being reclaimable matches with >> both EFI + the dts (old and new with a different start) >> having this as usable RAM. >> >> The 0x83f0_0000-0x8400_0000 area seems to be marked as >> reserved by neither EFI nor the current dts... >> >> With the first part of the reference memory map aligning >> with what EFI shows, I think this patch is correct. >> >> I wonder if we should do anything about the 0x83f0_0000-0x8400_0000 >> range though ? > > The logs in your commit message suggest the UEFI ahd already taken care > of reserving that bit > > Could you post the full output of `memmap` in uefi shell on your device? I find just booting with efi=debug easier. Here is the EFI memmap as seen/printed by Linux when booting with efi=debug: [ 0.000000] efi: Processing EFI memory map: [ 0.000000] efi: 0x000080800000-0x000080dfffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000815a0000-0x0000819fffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000081a00000-0x000081a3ffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000081d00000-0x000081dfffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000081f20000-0x000081f2ffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000081f38000-0x0000826fffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000829c0000-0x000083efffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000084000000-0x000084afffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000085380000-0x0000866bffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000091480000-0x0000a67fffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a6800000-0x0000a7f00fff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a7f01000-0x0000a7f01fff [Runtime Data|RUN| | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a7f02000-0x0000a7f04fff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a7f05000-0x0000a7f0cfff [Runtime Data|RUN| | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a7f0d000-0x0000a7f18fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a7f19000-0x0000a7ffffff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000a8000000-0x0000bbc0ffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000bbc10000-0x0000c177ffff [Loader Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c1780000-0x0000c178afff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c178b000-0x0000c3933fff [Loader Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c3934000-0x0000c4c76fff [Loader Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c4c77000-0x0000c50aafff [Loader Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c50ab000-0x0000c54fcfff [Loader Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c54fd000-0x0000c5b12fff [Boot Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c5b13000-0x0000c5b21fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c5b22000-0x0000c5b23fff [Loader Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c5b24000-0x0000c5b34fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c5b35000-0x0000c62e3fff [Boot Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c62e4000-0x0000c62e4fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c62e5000-0x0000c62edfff [Loader Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c62ee000-0x0000c65f6fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c65f7000-0x0000c66d5fff [Loader Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000c66d6000-0x0000cf6ecfff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000cf6ed000-0x0000cfbb9fff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000cfbba000-0x0000d0020fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d0021000-0x0000d5135fff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d5136000-0x0000d5136fff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d5137000-0x0000d5cedfff [Boot Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d5cee000-0x0000d5e7dfff [Runtime Code|RUN| | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d5e7e000-0x0000d6c8dfff [Runtime Data|RUN| | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6c8e000-0x0000d6c9dfff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6c9e000-0x0000d6d02fff [ACPI Mem NVS| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6d03000-0x0000d6ddefff [ACPI Reclaim| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6ddf000-0x0000d6ddffff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6de0000-0x0000d6e0ffff [Boot Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000d6e10000-0x0000d7ffffff [Boot Data | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000de5b0000-0x0000e46fffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000e69c0000-0x0000f84fffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000880000000-0x000cc236ffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000cc2370000-0x000cc6bdffff [Loader Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000cc6be0000-0x000ffdffffff [Conventional| | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000ffe000000-0x000fffffffff [Loader Code | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x00000c264000-0x00000c264fff [MMIO |RUN| | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x000081a40000-0x000081cfffff [Reserved | | | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x000081e00000-0x000081efffff [Reserved | | | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x000081f00000-0x000081f1ffff [Reserved | | | | | | | | | | | | | |WC| ] [ 0.000000] efi: 0x000081f30000-0x000081f37fff [Reserved | | | | | | | | | | | | | |WC| ] [ 0.000000] efi: 0x000082700000-0x0000827fffff [Reserved | | | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x000082800000-0x0000829bffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000083f00000-0x000083ffffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x000084b00000-0x00008537ffff [Reserved | | | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x0000866c0000-0x00009137ffff [Reserved | | | | | | | | | | | | | | |UC] [ 0.000000] efi: 0x0000e4700000-0x0000e47fffff [Reserved | | | | | | | | | | | | | |WC| ] [ 0.000000] efi: 0x0000e4800000-0x0000e69bffff [Reserved | | | | | | | | |WP| | |WB|WT|WC|UC] [ 0.000000] efi: 0x0000ff800000-0x0000ffffffff [Reserved | | | | | | | | | | | | | | |UC] Let me know if you want the efi shell output instead of this. Regards, Hans