x86: fix lguest build failure

drivers/lguest/x86/switcher_32.S:(.text+0x3815f8):
	undefined reference to `LGUEST_PAGES_regs_trapnum'

This problem was caused by asm-offsets.c only having the offsets when
lguest *guest* support was set, not lguest host (host support used to
imply guest support, so now they're separate these bugs come out).

Lguest guest support and host support are separate config options:
they used to be tied together. Sort out which parts of asm-offsets are
needed for Guest and Host.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index afd84463b7121f135dd1acee1683d2743d9ff8aa..a33d53017997df4849660cccbab4f45a223a2bd3 100644 (file)
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -20,10 +20,8 @@
 
 #include <xen/interface/xen.h>
 
-#ifdef CONFIG_LGUEST_GUEST
 #include <linux/lguest.h>
 #include "../../../drivers/lguest/lg.h"
-#endif
 
 #define DEFINE(sym, val) \
         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -134,6 +132,10 @@ void foo(void)
        BLANK();
        OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled);
        OFFSET(LGUEST_DATA_pgdir, lguest_data, pgdir);
+#endif
+
+#ifdef CONFIG_LGUEST
+       BLANK();
        OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc);
        OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc);
        OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3);