Linux Virtualization - Jan 2008 - [PATCH 0/7] More lguest massage.

This series takes one more step towards cpu-ification of lguest.
As for rusty's last suggestion, I get rid of the whole bunch
of "struct lguest *lg = cpu->lg" statements around by using
lg_cpu as our base structure wherever it matters. (this saves us
11 lines)

spte_addrdoes not depend on any guest information, so we
wipeout the lg parameter completely.

Signed-off-by:Glauber de Oliveira Costa <gcosta@redhat.com>
---
drivers/lguest/page_tables.c |    8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)

diff--git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c
indexfb66561..c4b8eaf 100644
---a/drivers/lguest/page_tables.c
+++b/drivers/lguest/page_tables.c
@@-84,7 +84,7 @@ static pgd_t *spgd_addr(struct lguest *lg, u32 i, unsigned long
vaddr)
/* This routine then takes the page directory entry returned above, which
 * contains the address of the page table entry (PTE) page.  It then returns a
 * pointer to the PTE entry for the given address. */
-staticpte_t *spte_addr(struct lguest *lg, pgd_t spgd, unsigned long vaddr)
+staticpte_t *spte_addr(pgd_t spgd, unsigned long vaddr)
{
	pte_t *page = __va(pgd_pfn(spgd) << PAGE_SHIFT);
	/* You should never call this if the PGD entry wasn't valid */
@@-261,7 +261,7 @@ int demand_page(struct lg_cpu *cpu, unsigned long vaddr, int
errcode)
		gpte = pte_mkdirty(gpte);

	/* Get the pointer to the shadow PTE entry we're going to set. */
-	spte= spte_addr(lg, *spgd, vaddr);
+	spte= spte_addr(*spgd, vaddr);
	/* If there was a valid shadow PTE entry here before, we release it.
	 * This can happen with a write to a previously read-only entry. */
	release_pte(*spte);
@@-310,7 +310,7 @@ static int page_writable(struct lg_cpu *cpu, unsigned long
vaddr)

	/* Check the flags on the pte entry itself: it must be present and
	 * writable. */
-	flags= pte_flags(*(spte_addr(cpu->lg, *spgd, vaddr)));
+	flags= pte_flags(*(spte_addr(*spgd, vaddr)));

	return (flags & (_PAGE_PRESENT|_PAGE_RW)) == (_PAGE_PRESENT|_PAGE_RW);
}
@@-509,7 +509,7 @@ static void do_set_pte(struct lguest *lg, int idx,
	/* If the top level isn't present, there's no entry to update. */
	if (pgd_flags(*spgd) & _PAGE_PRESENT) {
		/* Otherwise, we start by releasing the existing entry. */
-		pte_t*spte = spte_addr(lg, *spgd, vaddr);
+		pte_t*spte = spte_addr(*spgd, vaddr);
		release_pte(*spte);

		/* If they're setting this entry as dirty or accessed, we might
--
1.5.0.6