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ARM glibc uses (4 * __getpagesize()) for SHMLBA, which is correct for 4KB pages and works fine for 64KB pages, but the kernel uses a hardcoded 16KB that is too small for 64KB page based kernels. This changes the definition to what user space sees when using 64KB pages. Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
28 lines
965 B
C
28 lines
965 B
C
/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_SHMPARAM_H
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#define __ASM_SHMPARAM_H
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/*
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* For IPC syscalls from compat tasks, we need to use the legacy 16k
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* alignment value. Since we don't have aliasing D-caches, the rest of
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* the time we can safely use PAGE_SIZE.
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*/
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#define COMPAT_SHMLBA (4 * PAGE_SIZE)
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#include <asm-generic/shmparam.h>
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#endif /* __ASM_SHMPARAM_H */
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