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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cc1beb0f15dsm1281557a12.9.2026.08.26.10.37.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Aug 2026 10:37:41 -0700 (PDT) Message-ID: <315588d8-2a82-406b-a1e5-bcd00128c545@oss.qualcomm.com> Date: Wed, 26 Aug 2026 23:07:32 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 08/12] arm_mpam: propagate MSC access errors for interrupt control To: Andre Przywara , Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , Catalin Marinas , Will Deacon , "Rafael J . Wysocki" , Len Brown , James Morse , Ben Horgan , Reinette Chatre , Fenghua Yu Cc: Jonathan Cameron , Ganapatrao Kulkarni , Trilok Soni , Srinivas Ramana , Niyas Sait , Lee Trager , Ritwick Sharma , Gavin Shan , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260807105451.3728284-1-andre.przywara@arm.com> <20260807105451.3728284-9-andre.przywara@arm.com> Content-Language: en-US From: Srivathsa L Rao In-Reply-To: <20260807105451.3728284-9-andre.przywara@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: ZjVTe6Dn_tCToNyCL4dRFz-uBRXjSUlQ X-Proofpoint-Spam-Info: AW1haW4tMjYwODI2MDE0NyBTYWx0ZWRfX7leTcHZybC6w KS2sF2DXntebA8bTRiQ7fY68VJK66EL2lMvODx2j247NhkQu++2YLUhc8+cg095RnZ4Pv2TbxER VssAZXIwls7/6GEgngOD6E0JCgzNoLY= X-Proofpoint-GUID: ZjVTe6Dn_tCToNyCL4dRFz-uBRXjSUlQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI2MDE0NyBTYWx0ZWRfX+YL3s9aQwSSk IDaakjJIT+wiBNGzg/xbZjG6jBSH6iaa7sRNCg68klq6BvvQSbZxtBfUxYQpdgRa4lzHJ8gi1oK 6xyR3/IY2UNabbX8hMWrufSUl4R9ZT8ptvJsYSBDtDqgg4v1zJoOhCBZyTj0a3NdzsiBFN32iCY 397pl0pUqro4tb2XKshqRf+FHN76fKSxstU10MB3jSnI+fSU2pmIqt98Hld74mzKLVn4pgxd53o uLuYtFs2/XsPiafTz5qxwfkc9cKGPCKtP7FYt54Jp/6iw3LOP9T2aDqpQmPXBI5ZHszeZnQ3SO7 oJpUrPElJAEEbzSKObAi3we0vl4tn+B2FjnRy0oWT/R+Mj98bYWLS7Y9fPcSpSBbmqp3yCGvFG7 DzxbsoC3M33E5ybMlbXGq0QwfgmMZ3k4AEhSKE1KrIjVvKHD2+UAndwM7tUsck4g/iISRvVBOCS tSz35JZrFP2Svc7DF1Q== X-Authority-Analysis: v=2.4 cv=PPQ/P/qC c=1 sm=1 tr=0 ts=6a8f2467 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=7CQSdrXTAAAA:8 a=EUspDBNiAAAA:8 a=JeWy39_HCiB1Np-THXYA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-26_05,2026-08-26_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 impostorscore=0 spamscore=0 adultscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608260147 On 8/7/2026 4:24 PM, Andre Przywara wrote: > Allow the functions dealing with interrupt registration and enablement > to check for and return errors, and propagate MSC read and write errors > from the lower level up. > This does not cover the IRQ handler yet, as this needs some more > attention. > > Signed-off-by: Andre Przywara > --- > drivers/resctrl/mpam_devices.c | 31 +++++++++++++++---------------- > 1 file changed, 15 insertions(+), 16 deletions(-) > > diff --git a/drivers/resctrl/mpam_devices.c b/drivers/resctrl/mpam_devices.c > index 49239b15a27f..1b07f7765f96 100644 > --- a/drivers/resctrl/mpam_devices.c > +++ b/drivers/resctrl/mpam_devices.c Reviewed-by: Srivathsa L Rao