From 858259cf7d1c443c836a2022b78cb281f0a9b95e Mon Sep 17 00:00:00 2001 From: Bodo Stroesser Date: Mon, 7 Nov 2005 00:58:55 -0800 Subject: [PATCH] uml: maintain own LDT entries Patch imlements full LDT handling in SKAS: * UML holds it's own LDT table, used to deliver data on modify_ldt(READ) * UML disables the default_ldt, inherited from the host (SKAS3) or resets LDT entries, set by host's clib and inherited in SKAS0 * A new global variable skas_needs_stub is inserted, that can be used to decide, whether stub-pages must be supported or not. * Uses the syscall-stub to replace missing PTRACE_LDT (therefore, write_ldt_entry needs to be modified) Signed-off-by: Bodo Stroesser Signed-off-by: Jeff Dike Cc: Paolo Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/skas/process.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/um/kernel/skas/process.c') diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index 42f2da687dc8..599d679bd4fc 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -381,9 +381,9 @@ int copy_context_skas0(unsigned long new_stack, int pid) } /* - * This is used only, if proc_mm is available, while PTRACE_FAULTINFO - * isn't. Opening /proc/mm creates a new mm_context, which lacks the stub-pages - * Thus, we map them using /proc/mm-fd + * This is used only, if stub pages are needed, while proc_mm is + * availabl. Opening /proc/mm creates a new mm_context, which lacks + * the stub-pages. Thus, we map them using /proc/mm-fd */ void map_stub_pages(int fd, unsigned long code, unsigned long data, unsigned long stack) -- cgit v1.2.3