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Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Vasily Gorbik , Christian Borntraeger , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , the arch/x86 maintainers , "H. Peter Anvin" , Al Viro , "Eric W. Biederman" , Christoph Hellwig , Feng Tang , Linux ARM , Linux Kernel Mailing List , "open list:BROADCOM NVRAM DRIVER" , Parisc List , linuxppc-dev , linux-s390 , sparclinux , linux-arch , Linux API , Linux-MM , Christoph Hellwig Subject: Re: [PATCH v5 4/6] mm: simplify compat numa syscalls Message-ID: References: <20210727144859.4150043-1-arnd@kernel.org> <20210727144859.4150043-5-arnd@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-GUID: -XM2aaOHmahf3GNtvPV0YNUK2TjKX7f3 X-Proofpoint-ORIG-GUID: TkiykJPEd5k1niuESQpMFCol9mhqnTsf X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-07-27_13:2021-07-27,2021-07-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 adultscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=984 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2107270113 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 907C43002585 Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=XtVP3aKZ; spf=pass (imf09.hostedemail.com: domain of hca@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=hca@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com X-Stat-Signature: s5jbt51dn8ows9wyuwpgwiwxb97qduq6 X-HE-Tag: 1627413410-875224 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Jul 27, 2021 at 08:49:40PM +0200, Arnd Bergmann wrote: > On Tue, Jul 27, 2021 at 8:38 PM Heiko Carstens wrote: > > > > -268 common mbind sys_mbind compat_sys_mbind > > -269 common get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy > > -270 common set_mempolicy sys_set_mempolicy compat_sys_set_mempolicy > > +268 common mbind sys_mbind sys_mbind > > +269 common get_mempolicy sys_get_mempolicy sys_get_mempolicy > > +270 common set_mempolicy sys_set_mempolicy sys_set_mempolicy > > > > would remove compat_ptr() conversion from nmask above if I'm not mistaken. > > Maybe I'm misremembering how compat syscalls work on s390. Doesn't > SYSCALL_DEFINEx(sys_mbind) still create two entry points __s390x_sys_mbind() > and __s390_sys_mbind() with different argument conversion (__SC_CAST vs > __SC_COMPAT_CAST)? I thought that was the whole point of the macros. You are remembering correctly, probably because you implemented it ;) I totally forgot - sorry for the noise!