On Wed, May 08, 2019 at 05:44:03PM +0300, Kirill A. Shutemov wrote: > From: Alison Schofield <alison.schofield@xxxxxxxxx> > > encrypt_mprotect() is a new system call to support memory encryption. > > It takes the same parameters as legacy mprotect, plus an additional > key serial number that is mapped to an encryption keyid. Shouldn't this patch be after the encrypt_mprotect() is added? > Signed-off-by: Alison Schofield <alison.schofield@xxxxxxxxx> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > --- > arch/x86/entry/syscalls/syscall_32.tbl | 1 + > arch/x86/entry/syscalls/syscall_64.tbl | 1 + > include/linux/syscalls.h | 2 ++ > include/uapi/asm-generic/unistd.h | 4 +++- > kernel/sys_ni.c | 2 ++ > 5 files changed, 9 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl > index 1f9607ed087c..dbcd4c28d743 100644 > --- a/arch/x86/entry/syscalls/syscall_32.tbl > +++ b/arch/x86/entry/syscalls/syscall_32.tbl > @@ -433,3 +433,4 @@ > 425 i386 io_uring_setup sys_io_uring_setup __ia32_sys_io_uring_setup > 426 i386 io_uring_enter sys_io_uring_enter __ia32_sys_io_uring_enter > 427 i386 io_uring_register sys_io_uring_register __ia32_sys_io_uring_register > +428 i386 encrypt_mprotect sys_encrypt_mprotect __ia32_sys_encrypt_mprotect > diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl > index 92ee0b4378d4..d01bd132e9ee 100644 > --- a/arch/x86/entry/syscalls/syscall_64.tbl > +++ b/arch/x86/entry/syscalls/syscall_64.tbl > @@ -349,6 +349,7 @@ > 425 common io_uring_setup __x64_sys_io_uring_setup > 426 common io_uring_enter __x64_sys_io_uring_enter > 427 common io_uring_register __x64_sys_io_uring_register > +428 common encrypt_mprotect __x64_sys_encrypt_mprotect > > # > # x32-specific system call numbers start at 512 to avoid cache impact > diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h > index e446806a561f..38a2d7b95397 100644 > --- a/include/linux/syscalls.h > +++ b/include/linux/syscalls.h > @@ -988,6 +988,8 @@ asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, > asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, > siginfo_t __user *info, > unsigned int flags); > +asmlinkage long sys_encrypt_mprotect(unsigned long start, size_t len, > + unsigned long prot, key_serial_t serial); > > /* > * Architecture-specific system calls > diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h > index dee7292e1df6..86f942f54b1b 100644 > --- a/include/uapi/asm-generic/unistd.h > +++ b/include/uapi/asm-generic/unistd.h > @@ -832,9 +832,11 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup) > __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter) > #define __NR_io_uring_register 427 > __SYSCALL(__NR_io_uring_register, sys_io_uring_register) > +#define __NR_encrypt_mprotect 428 > +__SYSCALL(__NR_encrypt_mprotect, sys_encrypt_mprotect) > > #undef __NR_syscalls > -#define __NR_syscalls 428 > +#define __NR_syscalls 429 > > /* > * 32 bit systems traditionally used different > diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c > index d21f4befaea4..80da8d9ac8b1 100644 > --- a/kernel/sys_ni.c > +++ b/kernel/sys_ni.c > @@ -350,6 +350,8 @@ COND_SYSCALL(pkey_mprotect); > COND_SYSCALL(pkey_alloc); > COND_SYSCALL(pkey_free); > > +/* multi-key total memory encryption keys */ > +COND_SYSCALL(encrypt_mprotect); > > /* > * Architecture specific weak syscall entries. > -- > 2.20.1 > -- Sincerely yours, Mike.
