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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.git]
/
drivers
/
lguest
/
core.c
diff --git
a/drivers/lguest/core.c
b/drivers/lguest/core.c
index c632c08cbbdc949793f322b75186aa77beddf1a4..90663e01a56e0d4544b944da2fd81e5052a05a2f 100644
(file)
--- a/
drivers/lguest/core.c
+++ b/
drivers/lguest/core.c
@@
-1,8
+1,6
@@
/*P:400 This contains run_guest() which actually calls into the Host<->Guest
* Switcher and analyzes the return, such as determining if the Guest wants the
/*P:400 This contains run_guest() which actually calls into the Host<->Guest
* Switcher and analyzes the return, such as determining if the Guest wants the
- * Host to do something. This file also contains useful helper routines, and a
- * couple of non-obvious setup and teardown pieces which were implemented after
- * days of debugging pain. :*/
+ * Host to do something. This file also contains useful helper routines. :*/
#include <linux/module.h>
#include <linux/stringify.h>
#include <linux/stddef.h>
#include <linux/module.h>
#include <linux/stringify.h>
#include <linux/stddef.h>
@@
-49,8
+47,8
@@
static __init int map_switcher(void)
* easy.
*/
* easy.
*/
- /* We allocate an array of
"struct page"s. map_vm_area() wants the
- *
pages in this form, rather than just an array of pointer
s. */
+ /* We allocate an array of
struct page pointers. map_vm_area() wants
+ *
this, rather than just an array of page
s. */
switcher_page = kmalloc(sizeof(switcher_page[0])*TOTAL_SWITCHER_PAGES,
GFP_KERNEL);
if (!switcher_page) {
switcher_page = kmalloc(sizeof(switcher_page[0])*TOTAL_SWITCHER_PAGES,
GFP_KERNEL);
if (!switcher_page) {
@@
-137,6
+135,7
@@
static void unmap_switcher(void)
/* Now we just need to free the pages we copied the switcher into */
for (i = 0; i < TOTAL_SWITCHER_PAGES; i++)
__free_pages(switcher_page[i], 0);
/* Now we just need to free the pages we copied the switcher into */
for (i = 0; i < TOTAL_SWITCHER_PAGES; i++)
__free_pages(switcher_page[i], 0);
+ kfree(switcher_page);
}
/*H:032
}
/*H:032
@@
-172,7
+171,7
@@
void __lgread(struct lg_cpu *cpu, void *b, unsigned long addr, unsigned bytes)
}
}
}
}
-/* This is the write (copy into
g
uest) version. */
+/* This is the write (copy into
G
uest) version. */
void __lgwrite(struct lg_cpu *cpu, unsigned long addr, const void *b,
unsigned bytes)
{
void __lgwrite(struct lg_cpu *cpu, unsigned long addr, const void *b,
unsigned bytes)
{
@@
-209,9
+208,9
@@
int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
if (cpu->break_out)
return -EAGAIN;
if (cpu->break_out)
return -EAGAIN;
- /* Check if there are any interrupts which can be delivered
- *
now: if so, this sets up the hander to be executed when we
- *
next
run the Guest. */
+ /* Check if there are any interrupts which can be delivered
now:
+ *
if so, this sets up the hander to be executed when we next
+ * run the Guest. */
maybe_do_interrupt(cpu);
/* All long-lived kernel loops need to check with this horrible
maybe_do_interrupt(cpu);
/* All long-lived kernel loops need to check with this horrible
@@
-246,8
+245,10
@@
int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
lguest_arch_handle_trap(cpu);
}
lguest_arch_handle_trap(cpu);
}
+ /* Special case: Guest is 'dead' but wants a reboot. */
if (cpu->lg->dead == ERR_PTR(-ERESTART))
return -ERESTART;
if (cpu->lg->dead == ERR_PTR(-ERESTART))
return -ERESTART;
+
/* The Guest is dead => "No such file or directory" */
return -ENOENT;
}
/* The Guest is dead => "No such file or directory" */
return -ENOENT;
}
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