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h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=WPyHj2sa0JjXbqK2SzXu3+JHgwsxLcIsMfyvFhve4yTFjWMiOXScxZIFVzCNCgAK4 hUNBa/Vo7E0c/m1DIuj022yHk0R7+WXKz8+pTi8Ipmgs8kANu9TTSyAk6UBFIWgGLH qRzCNFCBDX9M1XEHAUZIWPCwbevV3GEWh0zEQJN8bVewnaaxSO/VFzF8Ac9/O3xGWm 1vo1ZkQzYdJrdw7uvdRVPh6hd+3wTRcxXZbEIK11j+LpyUOyYv3Bm/h0lIzFhMkgHC KsINiEWRRBYdqEmoJam++cv/VGHGsyJSz8/KS3JN90Iu3b65jqx6VFAe+wAWQ36/kd 15vdc4fzJ3SeA== Message-ID: <037c6541-a50b-445f-a82d-1cbcc94a3244@zytor.com> Date: Thu, 22 May 2025 10:26:52 -0700 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 v2 1/1] x86/fred/signal: Prevent single-step upon ERETU completion To: Dave Hansen , linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, peterz@infradead.org, andrew.cooper3@citrix.com, stable@vger.kernel.org References: <20250522171754.3082061-1-xin@zytor.com> Content-Language: en-US From: Xin Li Autocrypt: addr=xin@zytor.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/22/2025 10:22 AM, Dave Hansen wrote: > On 5/22/25 10:17, Xin Li (Intel) wrote: >> Clear the software event flag in the augmented SS to prevent infinite >> SIGTRAP handler loop if TF is used without an external debugger. > > Do you have a test case for this? It seems like the kind of thing we'd > want in selftests/. Ah, good point! The issue was found during an internal LASS test, I will convert it to a selftest. Thanks! Xin