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[175.34.8.244]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f0c52cf05sm3839795b3a.61.2026.04.10.13.50.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Apr 2026 13:50:40 -0700 (PDT) Message-ID: <36a332d2-2963-438d-8d3c-0738ec1a799f@redhat.com> Date: Sat, 11 Apr 2026 06:50:34 +1000 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 1/1] virt: arm-cca-guest: fix error check for RSI_INCOMPLETE To: Sami Mujawar , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, steven.price@arm.com, suzuki.poulose@arm.com, YeoReum.Yun@arm.com, Jagdish Gediya References: <20260410163636.259443-1-sami.mujawar@arm.com> Content-Language: en-US From: Gavin Shan In-Reply-To: <20260410163636.259443-1-sami.mujawar@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/11/26 2:36 AM, Sami Mujawar wrote: > The RSI interface can return RSI_INCOMPLETE when a report spans > multiple granules. This is an expected condition and should not be > treated as a fatal error. > > Currently, arm_cca_report_new() checks for `info.result != RSI_SUCCESS` > and bails out, which incorrectly flags RSI_INCOMPLETE as a failure. > Fix the check to only break out on results other than RSI_SUCCESS or > RSI_INCOMPLETE. > > This ensures partial reports are handled correctly and avoids spurious > -ENXIO errors when generating attestation reports. > > Fixes: 7999edc484ca ("virt: arm-cca-guest: TSM_REPORT support for realms") > Signed-off-by: Sami Mujawar > Reported-by: Jagdish Gediya > --- > drivers/virt/coco/arm-cca-guest/arm-cca-guest.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > Reviewed-by: Gavin Shan