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| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-07 11:05:35 -0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-01-30 22:50:13 +1100 |
| commit | 4665ac8e28c30c2a015c617c55783c0bf3a49c05 (patch) | |
| tree | 15992d7e693126be7f758e694c8a544306576dfd /drivers/lguest/page_tables.c | |
| parent | 66686c2ab08feb721ca4d98285fba64acdf6017f (diff) | |
| download | lwn-4665ac8e28c30c2a015c617c55783c0bf3a49c05.tar.gz lwn-4665ac8e28c30c2a015c617c55783c0bf3a49c05.zip | |
lguest: makes special fields be per-vcpu
lguest struct have room for some fields, namely, cr2, ts, esp1
and ss1, that are not really guest-wide, but rather, vcpu-wide.
This patch puts it in the vcpu struct
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/page_tables.c')
| -rw-r--r-- | drivers/lguest/page_tables.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c index f19add469944..e34c81636a8c 100644 --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -432,9 +432,10 @@ static unsigned int new_pgdir(struct lguest *lg, * Now we've seen all the page table setting and manipulation, let's see what * what happens when the Guest changes page tables (ie. changes the top-level * pgdir). This occurs on almost every context switch. */ -void guest_new_pagetable(struct lguest *lg, unsigned long pgtable) +void guest_new_pagetable(struct lg_cpu *cpu, unsigned long pgtable) { int newpgdir, repin = 0; + struct lguest *lg = cpu->lg; /* Look to see if we have this one already. */ newpgdir = find_pgdir(lg, pgtable); @@ -446,7 +447,7 @@ void guest_new_pagetable(struct lguest *lg, unsigned long pgtable) lg->pgdidx = newpgdir; /* If it was completely blank, we map in the Guest kernel stack */ if (repin) - pin_stack_pages(lg); + pin_stack_pages(cpu); } /*H:470 Finally, a routine which throws away everything: all PGD entries in all @@ -468,11 +469,11 @@ static void release_all_pagetables(struct lguest *lg) * mapping. Since kernel mappings are in every page table, it's easiest to * throw them all away. This traps the Guest in amber for a while as * everything faults back in, but it's rare. */ -void guest_pagetable_clear_all(struct lguest *lg) +void guest_pagetable_clear_all(struct lg_cpu *cpu) { - release_all_pagetables(lg); + release_all_pagetables(cpu->lg); /* We need the Guest kernel stack mapped again. */ - pin_stack_pages(lg); + pin_stack_pages(cpu); } /*:*/ /*M:009 Since we throw away all mappings when a kernel mapping changes, our |