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Tue, 18 Jul 2023 02:29:44 +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 v5 01/13] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Date: Tue, 18 Jul 2023 07:59:21 +0530 Message-ID: <20230718022934.90447-2-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230718022934.90447-1-aneesh.kumar@linux.ibm.com> References: <20230718022934.90447-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 7NCCJLDqV5Pd9sh_iqiJdYXLNjlh0FlB X-Proofpoint-ORIG-GUID: l5VtyCyon77C3CdDkvvprbeJuTvt6gEQ 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=2023-07-17_15,2023-07-13_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 clxscore=1011 impostorscore=0 adultscore=0 phishscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180017 X-Rspam-User: X-Stat-Signature: dcwpckyf833zdnopzq5m3oo58cs1d44p X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: B7432C0009 X-HE-Tag: 1689647410-762923 X-HE-Meta: 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 eC7a0OnB Xc8nQ6xWsZrvcmnxJmbMzKPMtTeXlWE2O+haSMbjcE8bKKxBszESWw2+Gh6a4xKp/iJi+QfAUmJ4XsRG4jlce1HEaD4DNxk3G0LK+BqhAcnKoOgGVMo0l73G2EfxGJO+Cg0U87lnz0ox66ogggA5tIx1LsedPJ1mPchhe0hHRQFsyNQNZe4JnqH32ZjnEAiKHnmJjgoVAa2dgoms= 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. Reviewed-by: Christophe Leroy 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.