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RISC-V Patches for the 5.19 Merge Window, Part 1

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* Support for the Svpbmt extension, which allows memory attributes to be
   encoded in pages.
 * Support for the Allwinner D1's implementation of page-based memory
   attributes.
 * Support for running rv32 binaries on rv64 systems, via the compat
   subsystem.
 * Support for kexec_file().
 * Support for the new generic ticket-based spinlocks, which allows us to
   also move to qrwlock.  These should have already gone in through the
   asm-geneic tree as well.
 * A handful of cleanups and fixes, include some larger ones around
   atomics and XIP.
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Merge tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for the Svpbmt extension, which allows memory attributes to
   be encoded in pages

 - Support for the Allwinner D1's implementation of page-based memory
   attributes

 - Support for running rv32 binaries on rv64 systems, via the compat
   subsystem

 - Support for kexec_file()

 - Support for the new generic ticket-based spinlocks, which allows us
   to also move to qrwlock. These should have already gone in through
   the asm-geneic tree as well

 - A handful of cleanups and fixes, include some larger ones around
   atomics and XIP

* tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits)
  RISC-V: Prepare dropping week attribute from arch_kexec_apply_relocations[_add]
  riscv: compat: Using seperated vdso_maps for compat_vdso_info
  RISC-V: Fix the XIP build
  RISC-V: Split out the XIP fixups into their own file
  RISC-V: ignore xipImage
  RISC-V: Avoid empty create_*_mapping definitions
  riscv: Don't output a bogus mmu-type on a no MMU kernel
  riscv: atomic: Add custom conditional atomic operation implementation
  riscv: atomic: Optimize dec_if_positive functions
  riscv: atomic: Cleanup unnecessary definition
  RISC-V: Load purgatory in kexec_file
  RISC-V: Add purgatory
  RISC-V: Support for kexec_file on panic
  RISC-V: Add kexec_file support
  RISC-V: use memcpy for kexec_file mode
  kexec_file: Fix kexec_file.c build error for riscv platform
  riscv: compat: Add COMPAT Kbuild skeletal support
  riscv: compat: ptrace: Add compat_arch_ptrace implement
  riscv: compat: signal: Add rt_frame implementation
  riscv: add memory-type errata for T-Head
  ...
This commit is contained in:
Linus Torvalds 2022-05-31 14:10:54 -07:00
commit 35b51afd23
112 changed files with 2788 additions and 790 deletions
Download patch file Download diff file Expand all files Collapse all files

68
include/linux/compat.h
View file

@ -259,6 +259,37 @@ struct compat_rlimit {
compat_ulong_t rlim_max;
};
#ifdef __ARCH_NEED_COMPAT_FLOCK64_PACKED
#define __ARCH_COMPAT_FLOCK64_PACK __attribute__((packed))
#else
#define __ARCH_COMPAT_FLOCK64_PACK
#endif
struct compat_flock {
short l_type;
short l_whence;
compat_off_t l_start;
compat_off_t l_len;
#ifdef __ARCH_COMPAT_FLOCK_EXTRA_SYSID
__ARCH_COMPAT_FLOCK_EXTRA_SYSID
#endif
compat_pid_t l_pid;
#ifdef __ARCH_COMPAT_FLOCK_PAD
__ARCH_COMPAT_FLOCK_PAD
#endif
};
struct compat_flock64 {
short l_type;
short l_whence;
compat_loff_t l_start;
compat_loff_t l_len;
compat_pid_t l_pid;
#ifdef __ARCH_COMPAT_FLOCK64_PAD
__ARCH_COMPAT_FLOCK64_PAD
#endif
} __ARCH_COMPAT_FLOCK64_PACK;
struct compat_rusage {
struct old_timeval32 ru_utime;
struct old_timeval32 ru_stime;
@ -896,6 +927,43 @@ asmlinkage long compat_sys_sigaction(int sig,
/* obsolete: net/socket.c */
asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
#ifdef __ARCH_WANT_COMPAT_TRUNCATE64
asmlinkage long compat_sys_truncate64(const char __user *pathname, compat_arg_u64(len));
#endif
#ifdef __ARCH_WANT_COMPAT_FTRUNCATE64
asmlinkage long compat_sys_ftruncate64(unsigned int fd, compat_arg_u64(len));
#endif
#ifdef __ARCH_WANT_COMPAT_FALLOCATE
asmlinkage long compat_sys_fallocate(int fd, int mode, compat_arg_u64(offset),
compat_arg_u64(len));
#endif
#ifdef __ARCH_WANT_COMPAT_PREAD64
asmlinkage long compat_sys_pread64(unsigned int fd, char __user *buf, size_t count,
compat_arg_u64(pos));
#endif
#ifdef __ARCH_WANT_COMPAT_PWRITE64
asmlinkage long compat_sys_pwrite64(unsigned int fd, const char __user *buf, size_t count,
compat_arg_u64(pos));
#endif
#ifdef __ARCH_WANT_COMPAT_SYNC_FILE_RANGE
asmlinkage long compat_sys_sync_file_range(int fd, compat_arg_u64(pos),
compat_arg_u64(nbytes), unsigned int flags);
#endif
#ifdef __ARCH_WANT_COMPAT_FADVISE64_64
asmlinkage long compat_sys_fadvise64_64(int fd, compat_arg_u64(pos),
compat_arg_u64(len), int advice);
#endif
#ifdef __ARCH_WANT_COMPAT_READAHEAD
asmlinkage long compat_sys_readahead(int fd, compat_arg_u64(offset), size_t count);
#endif
#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
/**