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x86/mm/cpa: Factor common code between cpa_flush_*() 

The start of cpa_flush_range() and cpa_flush_array() is the same, use
a common function.

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/20180919085948.138859183@infradead.org
This commit is contained in:
Peter Zijlstra 2018-09-19 10:50:23 +02:00 committed by Thomas Gleixner
parent fce2ce9544
commit 47e262ac5b
1 changed files with 18 additions and 21 deletions
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39
arch/x86/mm/pageattr.c
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@ -285,22 +285,28 @@ static void cpa_flush_all(unsigned long cache)
on_each_cpu(__cpa_flush_all, (void *) cache, 1);
}
static bool __cpa_flush_range(unsigned long start, int numpages, int cache)
{
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
WARN_ON(PAGE_ALIGN(start) != start);
if (!static_cpu_has(X86_FEATURE_CLFLUSH)) {
cpa_flush_all(cache);
return true;
}
flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);
return !cache;
}
static void cpa_flush_range(unsigned long start, int numpages, int cache)
{
unsigned int i, level;
unsigned long addr;
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
WARN_ON(PAGE_ALIGN(start) != start);
if (!static_cpu_has(X86_FEATURE_CLFLUSH)) {
cpa_flush_all(cache);
return;
}
flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);
if (!cache)
if (__cpa_flush_range(start, numpages, cache))
return;
/*
@ -326,16 +332,7 @@ static void cpa_flush_array(unsigned long baddr, unsigned long *start,
{
unsigned int i, level;
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
if (!static_cpu_has(X86_FEATURE_CLFLUSH)) {
cpa_flush_all(cache);
return;
}
flush_tlb_kernel_range(baddr, baddr + PAGE_SIZE * numpages);
if (!cache)
if (__cpa_flush_range(baddr, numpages, cache))
return;
/*