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| author | David Woodhouse <dwmw2@infradead.org> | 2007-08-23 11:43:14 +0200 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-08-23 11:43:14 +0200 |
| commit | ac0c955d5048c2c580fa7166a89133f0fd76c125 (patch) | |
| tree | 041ac4fb544c7244a1a0b35c8ceabc142d5645c1 /drivers/lguest/core.c | |
| parent | [MTD] mtdoops printk warning fixes (diff) | |
| parent | Apply memory policies to top two highest zones when highest zone is ZONE_MOVABLE (diff) | |
| download | linux-ac0c955d5048c2c580fa7166a89133f0fd76c125.tar.xz linux-ac0c955d5048c2c580fa7166a89133f0fd76c125.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/lguest/core.c')
| -rw-r--r-- | drivers/lguest/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c index 0a46e8837d9a..4a315f08a567 100644 --- a/drivers/lguest/core.c +++ b/drivers/lguest/core.c @@ -453,6 +453,11 @@ static void run_guest_once(struct lguest *lg, struct lguest_pages *pages) * lguest_pages". */ copy_in_guest_info(lg, pages); + /* Set the trap number to 256 (impossible value). If we fault while + * switching to the Guest (bad segment registers or bug), this will + * cause us to abort the Guest. */ + lg->regs->trapnum = 256; + /* Now: we push the "eflags" register on the stack, then do an "lcall". * This is how we change from using the kernel code segment to using * the dedicated lguest code segment, as well as jumping into the |