diff options
| -rw-r--r-- | arch/xtensa/kernel/process.c | 1 | ||||
| -rw-r--r-- | drivers/lguest/interrupts_and_traps.c | 7 |
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index ce758bab95b1..dd498f1604e1 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -30,6 +30,7 @@ #include <linux/init_task.h> #include <linux/module.h> #include <linux/mqueue.h> +#include <linux/fs.h> #include <asm/pgtable.h> #include <asm/uaccess.h> diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c index 49aa55577d0d..39731232d827 100644 --- a/drivers/lguest/interrupts_and_traps.c +++ b/drivers/lguest/interrupts_and_traps.c @@ -270,8 +270,11 @@ void pin_stack_pages(struct lguest *lg) /* Depending on the CONFIG_4KSTACKS option, the Guest can have one or * two pages of stack space. */ for (i = 0; i < lg->stack_pages; i++) - /* The stack grows *upwards*, hence the subtraction */ - pin_page(lg, lg->esp1 - i * PAGE_SIZE); + /* The stack grows *upwards*, so the address we're given is the + * start of the page after the kernel stack. Subtract one to + * get back onto the first stack page, and keep subtracting to + * get to the rest of the stack pages. */ + pin_page(lg, lg->esp1 - 1 - i * PAGE_SIZE); } /* Direct traps also mean that we need to know whenever the Guest wants to use |