cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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flat.h (610B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_GENERIC_FLAT_H
      3#define _ASM_GENERIC_FLAT_H
      4
      5#include <linux/uaccess.h>
      6
      7static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
      8		u32 *addr)
      9{
     10#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
     11	return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
     12#else
     13	return get_user(*addr, rp);
     14#endif
     15}
     16
     17static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
     18{
     19#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
     20	return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
     21#else
     22	return put_user(addr, rp);
     23#endif
     24}
     25
     26#endif /* _ASM_GENERIC_FLAT_H */