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author | Richard Weinberger <richard@nod.at> | 2015-03-18 21:31:27 +0100 |
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committer | Richard Weinberger <richard@nod.at> | 2015-04-13 21:00:53 +0200 |
commit | d0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0 (patch) | |
tree | 7b833b85c0e2eabf6b38d8b94875b430554afae7 /arch/um/kernel/skas/process.c | |
parent | aaeac66b1a02d399ec8ee63e8d617c1d601ea353 (diff) | |
download | op-kernel-dev-d0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0.zip op-kernel-dev-d0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0.tar.gz |
um: Remove SKAS3/4 support
Before we had SKAS0 UML had two modes of operation
TT (tracing thread) and SKAS3/4 (separated kernel address space).
TT was known to be insecure and got removed a long time ago.
SKAS3/4 required a few (3 or 4) patches on the host side which never went
mainline. The last host patch is 10 years old.
With SKAS0 mode (separated kernel address space using 0 host patches),
default since 2005, SKAS3/4 is obsolete and can be removed.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/skas/process.c')
-rw-r--r-- | arch/um/kernel/skas/process.c | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index 4da11b3..082955d6 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -10,25 +10,6 @@ #include <os.h> #include <skas.h> -int new_mm(unsigned long stack) -{ - int fd, err; - - fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0); - if (fd < 0) - return fd; - - if (skas_needs_stub) { - err = map_stub_pages(fd, STUB_CODE, STUB_DATA, stack); - if (err) { - os_close_file(fd); - return err; - } - } - - return fd; -} - extern void start_kernel(void); static int __init start_kernel_proc(void *unused) @@ -55,14 +36,6 @@ int __init start_uml(void) { stack_protections((unsigned long) &cpu0_irqstack); set_sigstack(cpu0_irqstack, THREAD_SIZE); - if (proc_mm) { - userspace_pid[0] = start_userspace(0); - if (userspace_pid[0] < 0) { - printf("start_uml - start_userspace returned %d\n", - userspace_pid[0]); - exit(1); - } - } init_new_thread_signals(); |