linux-stable/arch/x86/um/stub_segv.c
Johannes Berg 6032aca0de um: make stub data pages size tweakable
There's a lot of code here that hard-codes that the
data is a single page, and right now that seems to
be sufficient, but to make it easier to change this
in the future, add a new STUB_DATA_PAGES constant
and use it throughout the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2023-04-20 23:08:43 +02:00

20 lines
455 B
C

/*
* Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <sysdep/stub.h>
#include <sysdep/faultinfo.h>
#include <sysdep/mcontext.h>
#include <sys/ucontext.h>
void __attribute__ ((__section__ (".__syscall_stub")))
stub_segv_handler(int sig, siginfo_t *info, void *p)
{
struct faultinfo *f = get_stub_data();
ucontext_t *uc = p;
GET_FAULTINFO_FROM_MC(*f, &uc->uc_mcontext);
trap_myself();
}