Wire up the user interrupt receiver and sender related syscalls for x86_64. For rest of the architectures the syscalls are not implemented. <TODO: Reserve the syscall numbers for other architectures> Signed-off-by: Sohil Mehta <sohil.mehta@xxxxxxxxx> --- arch/x86/entry/syscalls/syscall_32.tbl | 6 ++++++ arch/x86/entry/syscalls/syscall_64.tbl | 6 ++++++ include/linux/syscalls.h | 8 ++++++++ include/uapi/asm-generic/unistd.h | 15 ++++++++++++++- kernel/sys_ni.c | 8 ++++++++ scripts/checksyscalls.sh | 6 ++++++ 6 files changed, 48 insertions(+), 1 deletion(-) diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 960a021d543e..d0e97f1f1173 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -453,3 +453,9 @@ 446 i386 landlock_restrict_self sys_landlock_restrict_self 447 i386 memfd_secret sys_memfd_secret 448 i386 process_mrelease sys_process_mrelease +449 i386 uintr_register_handler sys_uintr_register_handler +450 i386 uintr_unregister_handler sys_uintr_unregister_handler +451 i386 uintr_create_fd sys_uintr_create_fd +452 i386 uintr_register_sender sys_uintr_register_sender +453 i386 uintr_unregister_sender sys_uintr_unregister_sender +454 i386 uintr_wait sys_uintr_wait diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index 18b5500ea8bf..444af44e5947 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -370,6 +370,12 @@ 446 common landlock_restrict_self sys_landlock_restrict_self 447 common memfd_secret sys_memfd_secret 448 common process_mrelease sys_process_mrelease +449 common uintr_register_handler sys_uintr_register_handler +450 common uintr_unregister_handler sys_uintr_unregister_handler +451 common uintr_create_fd sys_uintr_create_fd +452 common uintr_register_sender sys_uintr_register_sender +453 common uintr_unregister_sender sys_uintr_unregister_sender +454 common uintr_wait sys_uintr_wait # # Due to a historical design error, certain syscalls are numbered differently diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 252243c7783d..f47f64c36d87 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -1060,6 +1060,14 @@ asmlinkage long sys_memfd_secret(unsigned int flags); /* arch/x86/kernel/ioport.c */ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); +/* arch/x86/kernel/uintr_fd.c */ +asmlinkage long sys_uintr_register_handler(u64 __user *handler, unsigned int flags); +asmlinkage long sys_uintr_unregister_handler(unsigned int flags); +asmlinkage long sys_uintr_create_fd(u64 vector, unsigned int flags); +asmlinkage long sys_uintr_register_sender(int uintr_fd, unsigned int flags); +asmlinkage long sys_uintr_unregister_sender(int uintr_fd, unsigned int flags); +asmlinkage long sys_uintr_wait(unsigned int flags); + /* pciconfig: alpha, arm, arm64, ia64, sparc */ asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len, diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index 1c5fb86d455a..b9a8b344270a 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -880,8 +880,21 @@ __SYSCALL(__NR_memfd_secret, sys_memfd_secret) #define __NR_process_mrelease 448 __SYSCALL(__NR_process_mrelease, sys_process_mrelease) +#define __NR_uintr_register_handler 449 +__SYSCALL(__NR_uintr_register_handler, sys_uintr_register_handler) +#define __NR_uintr_unregister_handler 450 +__SYSCALL(__NR_uintr_unregister_handler, sys_uintr_unregister_handler) +#define __NR_uintr_create_fd 451 +__SYSCALL(__NR_uintr_create_fd, sys_uintr_create_fd) +#define __NR_uintr_register_sender 452 +__SYSCALL(__NR_uintr_register_sender, sys_uintr_register_sender) +#define __NR_uintr_unregister_sender 453 +__SYSCALL(__NR_uintr_unregister_sender, sys_uintr_unregister_sender) +#define __NR_uintr_wait 454 +__SYSCALL(__NR_uintr_wait, sys_uintr_wait) + #undef __NR_syscalls -#define __NR_syscalls 449 +#define __NR_syscalls 455 /* * 32 bit systems traditionally used different diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index f43d89d92860..5d8b92ac197b 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -357,6 +357,14 @@ COND_SYSCALL(pkey_free); /* memfd_secret */ COND_SYSCALL(memfd_secret); +/* user interrupts */ +COND_SYSCALL(uintr_register_handler); +COND_SYSCALL(uintr_unregister_handler); +COND_SYSCALL(uintr_create_fd); +COND_SYSCALL(uintr_register_sender); +COND_SYSCALL(uintr_unregister_sender); +COND_SYSCALL(uintr_wait); + /* * Architecture specific weak syscall entries. */ diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh index fd9777f63f14..0969580d829c 100755 --- a/scripts/checksyscalls.sh +++ b/scripts/checksyscalls.sh @@ -204,6 +204,12 @@ cat << EOF #define __IGNORE__sysctl #define __IGNORE_arch_prctl #define __IGNORE_nfsservctl +#define __IGNORE_uintr_register_handler +#define __IGNORE_uintr_unregister_handler +#define __IGNORE_uintr_create_fd +#define __IGNORE_uintr_register_sender +#define __IGNORE_uintr_unregister_sender +#define __IGNORE_uintr_wait /* ... including the "new" 32-bit uid syscalls */ #define __IGNORE_lchown32 -- 2.33.0
