From: Charlie Jenkins <charlie@rivosinc.com>
To: Conor Dooley <conor.dooley@microchip.com>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
conor@kernel.org, paul.walmsley@sifive.com, palmer@rivosinc.com,
aou@eecs.berkeley.edu, anup@brainfault.org,
konstantin@linuxfoundation.org, linux-doc@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-mm@kvack.org,
mick@ics.forth.gr, jrtc27@jrtc27.com, rdunlap@infradead.org,
alexghiti@rivosinc.com
Subject: Re: [PATCH v9 0/4] RISC-V: mm: Make SV48 the default address space
Date: Wed, 9 Aug 2023 15:45:31 -0700 [thread overview]
Message-ID: <ZNQXC+UQ+a0s69Bs@ghost> (raw)
In-Reply-To: <20230809-bobbing-unleaded-c3d5e1c57d96@wendy>
On Wed, Aug 09, 2023 at 08:42:58AM +0100, Conor Dooley wrote:
> On Tue, Aug 08, 2023 at 06:51:06PM -0700, Charlie Jenkins wrote:
> > Make sv48 the default address space for mmap as some applications
> > currently depend on this assumption. Users can now select a
> > desired address space using a non-zero hint address to mmap. Previously,
> > requesting the default address space from mmap by passing zero as the hint
> > address would result in using the largest address space possible. Some
> > applications depend on empty bits in the virtual address space, like Go and
> > Java, so this patch provides more flexibility for application developers.
>
> This still does not build:
> ../fs/binfmt_flat.c:900:30: error: call to undeclared function 'is_compat_task'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>
> Reproduceable with allmodconfig.
>
There is some weird interaction with compat.h. Moving the definitions
in pgtable.h into the #ifndef __ASSEMBLY__ guarded section resolves
the compile error. I will send out another version with this change.
-Charlie
next prev parent reply other threads:[~2023-08-09 22:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-09 1:51 Charlie Jenkins
2023-08-09 1:51 ` [PATCH v9 1/4] RISC-V: mm: Restrict address space for sv39,sv48,sv57 Charlie Jenkins
2023-08-09 1:51 ` [PATCH v9 2/4] RISC-V: mm: Add tests for RISC-V mm Charlie Jenkins
2023-08-09 1:51 ` [PATCH v9 3/4] RISC-V: mm: Update pgtable comment documentation Charlie Jenkins
2023-08-09 1:51 ` [PATCH v9 4/4] RISC-V: mm: Document mmap changes Charlie Jenkins
2023-08-09 7:42 ` [PATCH v9 0/4] RISC-V: mm: Make SV48 the default address space Conor Dooley
2023-08-09 22:45 ` Charlie Jenkins [this message]
2023-08-09 23:07 ` Conor Dooley
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