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Thu, 6 Jul 2023 08:58:32 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org, mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, npiggin@gmail.com, christophe.leroy@csgroup.eu Cc: Oscar Salvador , Mike Kravetz , Dan Williams , Joao Martins , Catalin Marinas , Muchun Song , Will Deacon , "Aneesh Kumar K.V" Subject: [PATCH v3 01/13] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Date: Thu, 6 Jul 2023 14:28:07 +0530 Message-ID: <20230706085819.827761-2-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230706085819.827761-1-aneesh.kumar@linux.ibm.com> References: <20230706085819.827761-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 3IIzO4X39zwkmKxpAzglX5tlHicNfMUx X-Proofpoint-GUID: yXhgcgU-CZmSvaocgdEUuZmGVnoTxV9y X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-06_05,2023-07-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 mlxscore=0 phishscore=0 malwarescore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 priorityscore=1501 adultscore=0 suspectscore=0 clxscore=1015 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307060075 X-Rspamd-Queue-Id: 23D4914000F X-Rspam-User: X-Stat-Signature: anepkf58dbu966jm9yq6homd8fxr3fxm X-Rspamd-Server: rspam03 X-HE-Tag: 1688633939-359458 X-HE-Meta: U2FsdGVkX18OvJ1ue0pegQT8VMjNt2+eclo223girjmjnjrVlTpDFN6Q4h+IlB/dv6XYZw1NiODLLdGMN7p9yASyy+Ynji9wHxJi2iryX9l/Ru1sIjwGrxnLZLkOo2f/yu0dco6KstJCsE33DzwFF6DhOpjZxoNphtExZ29OYVsE7SxeVUM+NAbtZrDy83kYT+bQdYZSsz0e6svLQU+55vy1L4D8nhXxf3ujQ23xCmMe4N06/v18iU7Sg1PJGWMuJj2SVZQzBBB3qcqikd7JxuG2zm6z4ziJjUA/Qs72MLZfSK+7+nK0ikbh6/QdHbKtkcJSirIwkJ+i66ihAX9P/1Q+L4Qq519nTZAxnwL7HjFsQ54dOz5p2qMy37dLr+nhW3nbcdBQn565CLNPmhbRPAvX+xIuE/s33m5LxjIHQARUuSRawkXAzfNrl3KNrK0maoM3M34/THyTMoSfy5jKz/GzbrzAFERf74au1A1aqDUlx95YriI/XH7aEkibpGT9ebe/6K/cTS94aNmBgBduvMXYe+/H2bfKWWI7HWX/44FGjgHpfbfF82V9Ny9eVniyJt2G5ujkDBUouN4zrsdf7OVuvLUtFEmDAUcUuH8Z6VA7uCkRfIFDlOZ5olEy2WRbwJ00cvT6FjI7SyEpnHUc55o4B9YSHblHwMHPSlqrUi0yuGo9D9r0MPIivC3tjGFc+jpnY8SbMXw+S3CDlkQ9hj/gIYCMoBzdcrDNr0H4VOMNdPLl4P6V1A3c2UbZYBGoLvMUK5vaISpo0OmyVQr97UyoAbnjy0a/F0HhDSLgKjxLyOD248I6spQM4OtrwNtP76SHfPp+p+l7cDwW+S/TOi2o/WyurnyZ7pkBb66TjIdaV8S6d0aZX6WXljIZNTr6TNB/gQWvRmMZxnFbNIL4z7wXuNE5gU+rbiWbRd6LTt24ZDQASWOImVxxXIjfMXxJNJA6tiFWJ+2KcfEdnpv QUphqDMR wFr6i+a/EvQiZH/NMzkCs7XJOSNZ5MjsEbw9leq96UkiadPUqSYdpaUIEBD+Ti+70aroiOYFbg8cKEXLW5ABi4pFYs52pyMVywrAz953+SnFG/RCqoQPfnCvX3aL9x2CDt3Gjg151bXBpg/YdsZqItJxK5VTVC1s9tupqC3CFk2A2I9TEuYI0jQ9VEWguBEJFSysOnV+XVS9Zm5FxED6/PoOxUDEQjFOH8uDNuTOs3KMjUps= 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: Architectures like powerpc would like to enable transparent huge page pud support only with radix translation. To support that add has_transparent_pud_hugepage() helper that architectures can override. Signed-off-by: Aneesh Kumar K.V --- drivers/nvdimm/pfn_devs.c | 2 +- include/linux/pgtable.h | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index af7d9301520c..18ad315581ca 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -100,7 +100,7 @@ static unsigned long *nd_pfn_supported_alignments(unsigned long *alignments) if (has_transparent_hugepage()) { alignments[1] = HPAGE_PMD_SIZE; - if (IS_ENABLED(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)) + if (has_transparent_pud_hugepage()) alignments[2] = HPAGE_PUD_SIZE; } diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 5063b482e34f..cf13f8d938a8 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -1499,6 +1499,9 @@ typedef unsigned int pgtbl_mod_mask; #define has_transparent_hugepage() IS_BUILTIN(CONFIG_TRANSPARENT_HUGEPAGE) #endif +#ifndef has_transparent_pud_hugepage +#define has_transparent_pud_hugepage() IS_BUILTIN(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD) +#endif /* * On some architectures it depends on the mm if the p4d/pud or pmd * layer of the page table hierarchy is folded or not.