mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 18:39:59 +00:00
xen: clean up xen_load_gdt
Makes the logic a bit clearer. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
parent
cdaead6b4e
commit
c7da8c829b
1 changed files with 13 additions and 2 deletions
|
@ -301,10 +301,21 @@ static void xen_load_gdt(const struct desc_ptr *dtr)
|
|||
frames = mcs.args;
|
||||
|
||||
for (f = 0; va < dtr->address + size; va += PAGE_SIZE, f++) {
|
||||
frames[f] = arbitrary_virt_to_mfn((void *)va);
|
||||
int level;
|
||||
pte_t *ptep = lookup_address(va, &level);
|
||||
unsigned long pfn, mfn;
|
||||
void *virt;
|
||||
|
||||
BUG_ON(ptep == NULL);
|
||||
|
||||
pfn = pte_pfn(*ptep);
|
||||
mfn = pfn_to_mfn(pfn);
|
||||
virt = __va(PFN_PHYS(pfn));
|
||||
|
||||
frames[f] = mfn;
|
||||
|
||||
make_lowmem_page_readonly((void *)va);
|
||||
make_lowmem_page_readonly(mfn_to_virt(frames[f]));
|
||||
make_lowmem_page_readonly(virt);
|
||||
}
|
||||
|
||||
MULTI_set_gdt(mcs.mc, frames, size / sizeof(struct desc_struct));
|
||||
|
|
Loading…
Reference in a new issue