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authorRichard Weinberger <richard@nod.at>2013-08-17 18:46:00 +0200
committerRichard Weinberger <richard@nod.at>2013-09-07 10:38:34 +0200
commitf75b1b1bedfb498cc43a992ce4d7ed8df3b1e770 (patch)
treee7afc9647b9cc80fb95ee9dae7d9532b67efdc01 /arch/um/kernel/Makefile
parent65984ff9d2179a97e5a11aaef1e86fdb276cfad5 (diff)
um: Implement probe_kernel_read()
UML needs it's own probe_kernel_read() to handle kernel mode faults correctly. The implementation uses mincore() on the host side to detect whether a page is owned by the UML kernel process. This fixes also a possible crash when sysrq-t is used. Starting with 3.10 sysrq-t calls probe_kernel_read() to read details from the kernel workers. As kernel worker are completely async pointers may turn NULL while reading them. Cc: <stian@nixia.no> Cc: <tj@kernel.org> Cc: <stable@vger.kernel.org> # 3.10.x Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/Makefile')
-rw-r--r--arch/um/kernel/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index babe21826e3e..d8b78a03855c 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -13,7 +13,7 @@ clean-files :=
obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \
physmem.o process.o ptrace.o reboot.o sigio.o \
signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
- um_arch.o umid.o skas/
+ um_arch.o umid.o maccess.o skas/
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o