Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
---
drivers/lguest/lg.h | 6 +++---
drivers/lguest/page_tables.c | 18 +++++++++---------
2 files changed, 12 insertions(+), 12 deletions(-)
===================================================================
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -35,7 +35,7 @@ struct lguest_dma_info
struct pgdir
{
- unsigned long cr3;
+ unsigned long gpgdir;
pgd_t *pgdir;
};
@@ -159,10 +159,10 @@ int init_guest_pagetable(struct lguest *
int init_guest_pagetable(struct lguest *lg, unsigned long pgtable);
void free_guest_pagetable(struct lguest *lg);
void guest_new_pagetable(struct lguest *lg, unsigned long pgtable);
-void guest_set_pmd(struct lguest *lg, unsigned long cr3, u32 i);
+void guest_set_pmd(struct lguest *lg, unsigned long gpgdir, u32 i);
void guest_pagetable_clear_all(struct lguest *lg);
void guest_pagetable_flush_user(struct lguest *lg);
-void guest_set_pte(struct lguest *lg, unsigned long cr3,
+void guest_set_pte(struct lguest *lg, unsigned long gpgdir,
unsigned long vaddr, pte_t val);
void map_switcher_in_guest(struct lguest *lg, struct lguest_pages *pages);
int demand_page(struct lguest *info, unsigned long cr2, int errcode);
===================================================================
--- a/drivers/lguest/page_tables.c
+++ b/drivers/lguest/page_tables.c
@@ -96,7 +96,7 @@ static unsigned long gpgd_addr(struct lg
static unsigned long gpgd_addr(struct lguest *lg, unsigned long vaddr)
{
unsigned int index = vaddr >> (PGDIR_SHIFT);
- return lg->pgdirs[lg->pgdidx].cr3 + index * sizeof(pgd_t);
+ return lg->pgdirs[lg->pgdidx].gpgdir + index * sizeof(pgd_t);
}
static unsigned long gpte_addr(struct lguest *lg,
@@ -369,7 +369,7 @@ static unsigned int find_pgdir(struct lg
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(lg->pgdirs); i++)
- if (lg->pgdirs[i].cr3 == pgtable)
+ if (lg->pgdirs[i].gpgdir == pgtable)
break;
return i;
}
@@ -378,7 +378,7 @@ static unsigned int find_pgdir(struct lg
* allocate a new one (and so the kernel parts are not there), we set
* blank_pgdir. */
static unsigned int new_pgdir(struct lguest *lg,
- unsigned long cr3,
+ unsigned long gpgdir,
int *blank_pgdir)
{
unsigned int next;
@@ -398,7 +398,7 @@ static unsigned int new_pgdir(struct lgu
*blank_pgdir = 1;
}
/* Record which Guest toplevel this shadows. */
- lg->pgdirs[next].cr3 = cr3;
+ lg->pgdirs[next].gpgdir = gpgdir;
/* Release all the non-kernel mappings. */
flush_user_mappings(lg, next);
@@ -499,7 +499,7 @@ static void do_set_pte(struct lguest *lg
* The benefit is that when we have to track a new page table, we can copy keep
* all the kernel mappings. This speeds up context switch immensely. */
void guest_set_pte(struct lguest *lg,
- unsigned long cr3, unsigned long vaddr, pte_t gpte)
+ unsigned long gpgdir, unsigned long vaddr, pte_t gpte)
{
/* Kernel mappings must be changed on all top levels. Slow, but
* doesn't happen often. */
@@ -510,7 +510,7 @@ void guest_set_pte(struct lguest *lg,
do_set_pte(lg, i, vaddr, gpte);
} else {
/* Is this page table one we have a shadow for? */
- int pgdir = find_pgdir(lg, cr3);
+ int pgdir = find_pgdir(lg, gpgdir);
if (pgdir != ARRAY_SIZE(lg->pgdirs))
/* If so, do the update. */
do_set_pte(lg, pgdir, vaddr, gpte);
@@ -531,7 +531,7 @@ void guest_set_pte(struct lguest *lg,
*
* So with that in mind here's our code to to update a (top-level) PGD entry:
*/
-void guest_set_pmd(struct lguest *lg, unsigned long cr3, u32 idx)
+void guest_set_pmd(struct lguest *lg, unsigned long gpgdir, u32 idx)
{
int pgdir;
@@ -541,7 +541,7 @@ void guest_set_pmd(struct lguest *lg, un
return;
/* If they're talking about a page table we have a shadow for... */
- pgdir = find_pgdir(lg, cr3);
+ pgdir = find_pgdir(lg, gpgdir);
if (pgdir < ARRAY_SIZE(lg->pgdirs))
/* ... throw it away. */
release_pgd(lg, lg->pgdirs[pgdir].pgdir + idx);
@@ -561,7 +561,7 @@ int init_guest_pagetable(struct lguest *
/* We start on the first shadow page table, and give it a blank PGD
* page. */
lg->pgdidx = 0;
- lg->pgdirs[lg->pgdidx].cr3 = pgtable;
+ lg->pgdirs[lg->pgdidx].gpgdir = pgtable;
lg->pgdirs[lg->pgdidx].pgdir = (pgd_t*)get_zeroed_page(GFP_KERNEL);
if (!lg->pgdirs[lg->pgdidx].pgdir)
return -ENOMEM;
--
there are those who do and those who hang on and you don't see too
many doers quoting their contemporaries. -- Larry McVoy
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