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x86/mm/cpa: Use flush_tlb_kernel_range() 

Both cpa_flush_range() and cpa_flush_array() have a well specified
range, use that to do a range based TLB invalidate.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Cc: Bin Yang <bin.yang@intel.com>
Cc: Mark Gross <mark.gross@intel.com>
Link: https://lkml.kernel.org/r/20180919085947.985193217@infradead.org
This commit is contained in:
Peter Zijlstra 2018-09-19 10:50:20 +02:00 committed by Thomas Gleixner
parent ddd07b7503
commit a7295fd53c
1 changed files with 5 additions and 4 deletions
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9
arch/x86/mm/pageattr.c
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@ -293,7 +293,7 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled); BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
WARN_ON(PAGE_ALIGN(start) != start); WARN_ON(PAGE_ALIGN(start) != start);
flush_tlb_all(); flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);
if (!cache) if (!cache)
return; return;
@ -315,14 +315,15 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
} }
} }
static void cpa_flush_array(unsigned long *start, int numpages, int cache, static void cpa_flush_array(unsigned long baddr, unsigned long *start,
int numpages, int cache,
int in_flags, struct page **pages) int in_flags, struct page **pages)
{ {
unsigned int i, level; unsigned int i, level;
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled); BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
flush_tlb_all(); flush_tlb_kernel_range(baddr, baddr + PAGE_SIZE * numpages);
if (!cache) if (!cache)
return; return;
@ -1757,7 +1758,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
*/ */
if (!ret && boot_cpu_has(X86_FEATURE_CLFLUSH)) { if (!ret && boot_cpu_has(X86_FEATURE_CLFLUSH)) {
if (cpa.flags & (CPA_PAGES_ARRAY | CPA_ARRAY)) { if (cpa.flags & (CPA_PAGES_ARRAY | CPA_ARRAY)) {
cpa_flush_array(addr, numpages, cache, cpa_flush_array(baddr, addr, numpages, cache,
cpa.flags, pages); cpa.flags, pages);
} else } else
cpa_flush_range(baddr, numpages, cache); cpa_flush_range(baddr, numpages, cache);