arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ
commit 24951465cbd279f60b1fdc2421b3694405bcff42 upstream. arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value for compat tasks. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Reviewed-by: NDave Martin <Dave.Martin@arm.com> Reported-by: NSteve McIntyre <steve.mcintyre@arm.com> Tested-by: NSteve McIntyre <93sam@debian.org> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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