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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493be82fd71sm77510895e9.15.2026.07.01.00.47.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 01 Jul 2026 00:47:42 -0700 (PDT) Message-ID: <0d210cc9-5565-47e9-904f-3e8dbd910d6f@oss.qualcomm.com> Date: Wed, 1 Jul 2026 09:47:32 +0200 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 2/9] vdso/gettimeofday: Validate system call existence for time() and gettimeofday() Content-Language: en-US To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Russell King , Catalin Marinas , Will Deacon , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Thomas Bogendoerfer , Vincenzo Frascino , John Stultz , Stephen Boyd , "David S. Miller" , Andreas Larsson Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, Arnd Bergmann , linux-api@vger.kernel.org, sparclinux@vger.kernel.org References: <20260630-vdso-compat_32bit_time-v2-0-520d194640dd@linutronix.de> <20260630-vdso-compat_32bit_time-v2-2-520d194640dd@linutronix.de> From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: <20260630-vdso-compat_32bit_time-v2-2-520d194640dd@linutronix.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: BJjhhKKkwksmxk3FBbRdXgcoQxwro67a X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAxMDA3NyBTYWx0ZWRfXxtfFOLiQ0q89 KciDoCmPplj5s3yJNwMqKSl0bTE1GPwKCrZMxi0K0aZyKQAt6Xmqt94GfBD3uHdEvOBfuHa8ygc R01xqbCnGCw0tcdz9lQ0qbtVB37wHT7/HUjU/wxwUqvuQ6SIcmiXAPEZCbLGefEc7ojjsnDwIXV pfxBowSjXWLK6uP09Vp7Mk3IaBgTYGpbQQlosnud9CDeonpflfYdTw0dZmYW8fMfZCcni/3csGL SMnhQ9w9boKPOu6NoIubgBxllApGq2aFc7Irn2nqsN4X+FvlxuLSkUwo/o+ek+qszSEfrCrHCJj mTeWb4M+24j8uCWhHMrU54B1nRtzw/ZKmyXPWDfE4UQ4VLTzuUqLDARMOTRI3lNshL/UhZvitzD 5r9HqRNXSlNixNf+gHGBbk7YqgZqmjzbCKugdQ987nAdf9mcO0WrOrNtOcOflve8nSlqmwbqjxK wQb2flqZEXw/0BNDvTw== X-Proofpoint-GUID: BJjhhKKkwksmxk3FBbRdXgcoQxwro67a X-Authority-Analysis: v=2.4 cv=LIZWhpW9 c=1 sm=1 tr=0 ts=6a44c623 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=4s3hRJSeHn4rkQlkrse1kQ==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=M51BFTxLslgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=nV7M3V7dV4ZlPVs255YA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAxMDA3NyBTYWx0ZWRfX8f/TKVdZ3Y6e vc1mVxanJ73N7Np8odXzlVfEYUAUIF7Anqq0UfLfz0fUFeOzoxcHQhHzNZ7BqqQVQYS7ROjaKBr zrvlxLF5uizCdQLnQ3FmNsIOiuWyN2s= 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=2026-07-01_01,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 bulkscore=0 adultscore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607010077 On 30/6/26 09:38, Thomas WeiÃschuh wrote: > Not all architectures have the system calls for time() and > gettimeofday(). When the system call is missing, the vDSO function > should also not be present. > > Validate that. > > Signed-off-by: Thomas Weißschuh > --- > lib/vdso/gettimeofday.c | 10 ++++++++++ > 1 file changed, 10 insertions(+) Reviewed-by: Philippe Mathieu-Daudé