x86: cpa, eliminate CPA_ enum
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 029fb07..fb2eedb 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -27,11 +27,6 @@
int flushtlb;
};
-enum {
- CPA_NO_SPLIT = 0,
- CPA_SPLIT,
-};
-
static inline int
within(unsigned long addr, unsigned long start, unsigned long end)
{
@@ -263,7 +258,7 @@
unsigned long nextpage_addr, numpages, pmask, psize, flags;
pte_t new_pte, old_pte, *tmp;
pgprot_t old_prot, new_prot;
- int level, res = CPA_SPLIT;
+ int level, do_split = 1;
/*
* An Athlon 64 X2 showed hard hangs if we tried to preserve
@@ -274,7 +269,7 @@
* disable this code until the hang can be debugged:
*/
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
- return res;
+ return 1;
spin_lock_irqsave(&pgd_lock, flags);
/*
@@ -297,7 +292,7 @@
break;
#endif
default:
- res = -EINVAL;
+ do_split = -EINVAL;
goto out_unlock;
}
@@ -325,7 +320,7 @@
* above:
*/
if (pgprot_val(new_prot) == pgprot_val(old_prot)) {
- res = CPA_NO_SPLIT;
+ do_split = 0;
goto out_unlock;
}
@@ -345,13 +340,13 @@
new_pte = pfn_pte(pte_pfn(old_pte), canon_pgprot(new_prot));
__set_pmd_pte(kpte, address, new_pte);
cpa->flushtlb = 1;
- res = CPA_NO_SPLIT;
+ do_split = 0;
}
out_unlock:
spin_unlock_irqrestore(&pgd_lock, flags);
- return res;
+ return do_split;
}
static int split_large_page(pte_t *kpte, unsigned long address)
@@ -429,7 +424,7 @@
static int __change_page_attr(unsigned long address, struct cpa_data *cpa)
{
struct page *kpte_page;
- int level, res;
+ int level, do_split;
pte_t *kpte;
repeat:
@@ -480,25 +475,26 @@
* Check, whether we can keep the large page intact
* and just change the pte:
*/
- res = try_preserve_large_page(kpte, address, cpa);
- if (res < 0)
- return res;
+ do_split = try_preserve_large_page(kpte, address, cpa);
+ if (do_split < 0)
+ return do_split;
/*
* When the range fits into the existing large page,
* return. cp->numpages and cpa->tlbflush have been updated in
* try_large_page:
*/
- if (res == CPA_NO_SPLIT)
+ if (do_split == 0)
return 0;
/*
* We have to split the large page:
*/
- res = split_large_page(kpte, address);
- if (res)
- return res;
+ do_split = split_large_page(kpte, address);
+ if (do_split)
+ return do_split;
cpa->flushtlb = 1;
+
goto repeat;
}