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[60.241.56.246]) by smtp.gmail.com with ESMTPSA id q1sm15483011pfb.156.2019.06.09.23.17.09 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 09 Jun 2019 23:17:10 -0700 (PDT) Date: Mon, 10 Jun 2019 16:14:48 +1000 From: Nicholas Piggin Subject: Re: [PATCH 2/4] arm64: support huge vmap vmalloc To: Anshuman Khandual , linux-mm@kvack.org Cc: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org References: <20190610043838.27916-1-npiggin@gmail.com> <20190610043838.27916-2-npiggin@gmail.com> In-Reply-To: MIME-Version: 1.0 User-Agent: astroid/0.14.0 (https://github.com/astroidmail/astroid) Message-Id: <1560147087.rpy7pimoej.astroid@bobo.none> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable 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: Anshuman Khandual's on June 10, 2019 3:47 pm: >=20 >=20 > On 06/10/2019 10:08 AM, Nicholas Piggin wrote: >> Applying huge vmap to vmalloc requires vmalloc_to_page to walk huge >> pages. Define pud_large and pmd_large to support this. >>=20 >> Signed-off-by: Nicholas Piggin >> --- >> arch/arm64/include/asm/pgtable.h | 2 ++ >> 1 file changed, 2 insertions(+) >>=20 >> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/p= gtable.h >> index 2c41b04708fe..30fe7b344bf7 100644 >> --- a/arch/arm64/include/asm/pgtable.h >> +++ b/arch/arm64/include/asm/pgtable.h >> @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *fi= le, unsigned long pfn, >> PMD_TYPE_TABLE) >> #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) =3D=3D \ >> PMD_TYPE_SECT) >> +#define pmd_large(pmd) pmd_sect(pmd) >> =20 >> #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 >> #define pud_sect(pud) (0) >> @@ -438,6 +439,7 @@ extern pgprot_t phys_mem_access_prot(struct file *fi= le, unsigned long pfn, >> #define pud_table(pud) ((pud_val(pud) & PUD_TYPE_MASK) =3D=3D \ >> PUD_TYPE_TABLE) >> #endif >> +#define pud_large(pud) pud_sect(pud) >> =20 >> extern pgd_t init_pg_dir[PTRS_PER_PGD]; >> extern pgd_t init_pg_end[]; >=20 > Another series (I guess not merged yet) is trying to add these wrappers > on arm64 (https://patchwork.kernel.org/patch/10883887/). >=20 Okay good, I'll just cherry pick it for the series. Thanks, Nick =