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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c3dc5bec05
The flat loader uses an architecture's flat_stack_align() to align the stack but assumes word-alignment is enough for the data sections. However, on the Xtensa S6000 we have registers up to 128bit width which can be used from userspace and therefor need userspace stack and data-section alignment of at least this size. This patch drops flat_stack_align() and uses the same alignment that is required for slab caches, ARCH_SLAB_MINALIGN, or wordsize if it's not defined by the architecture. It also fixes m32r which was obviously kaput, aligning an uninitialized stack entry instead of the stack pointer. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Oskar Schirmer <os@emlix.com> Cc: David Howells <dhowells@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <cooloney@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Johannes Weiner <jw@emlix.com> Acked-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 lines
520 B
C
17 lines
520 B
C
/*
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* arch/arm/include/asm/flat.h -- uClinux flat-format executables
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*/
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#ifndef __ARM_FLAT_H__
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#define __ARM_FLAT_H__
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#define flat_argvp_envp_on_stack() 1
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#define flat_old_ram_flag(flags) (flags)
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#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
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#define flat_get_addr_from_rp(rp, relval, flags, persistent) get_unaligned(rp)
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#define flat_put_addr_at_rp(rp, val, relval) put_unaligned(val,rp)
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#define flat_get_relocate_addr(rel) (rel)
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#define flat_set_persistent(relval, p) 0
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#endif /* __ARM_FLAT_H__ */
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