On Fri, Mar 13, 2020 at 03:43:37PM +0000, Vincenzo Frascino wrote: > --- /dev/null > +++ b/arch/arm64/include/asm/vdso/processor.h > @@ -0,0 +1,31 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (C) 2020 ARM Ltd. > + */ > +#ifndef __ASM_VDSO_PROCESSOR_H > +#define __ASM_VDSO_PROCESSOR_H > + > +#ifndef __ASSEMBLY__ > + > +#include <asm/page-def.h> > + > +#ifdef CONFIG_COMPAT > +#if defined(CONFIG_ARM64_64K_PAGES) && defined(CONFIG_KUSER_HELPERS) > +/* > + * With CONFIG_ARM64_64K_PAGES enabled, the last page is occupied > + * by the compat vectors page. > + */ > +#define TASK_SIZE_32 UL(0x100000000) > +#else > +#define TASK_SIZE_32 (UL(0x100000000) - PAGE_SIZE) > +#endif /* CONFIG_ARM64_64K_PAGES */ > +#endif /* CONFIG_COMPAT */ Just curious, what's TASK_SIZE_32 used for in the vDSO code? You don't seem to move TASK_SIZE. -- Catalin
