lkml.org 
[lkml]   [2018]   [Sep]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 4/8] 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>
---
arch/x86/mm/pageattr.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -293,7 +293,7 @@ static void cpa_flush_range(unsigned lon
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
WARN_ON(PAGE_ALIGN(start) != start);

- flush_tlb_all();
+ flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);

if (!cache)
return;
@@ -315,14 +315,15 @@ static void cpa_flush_range(unsigned lon
}
}

-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)
{
unsigned int i, level;

BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);

- flush_tlb_all();
+ flush_tlb_kernel_range(baddr, baddr + PAGE_SIZE * numpages);

if (!cache)
return;
@@ -1754,7 +1755,7 @@ static int change_page_attr_set_clr(unsi
*/
if (!ret && boot_cpu_has(X86_FEATURE_CLFLUSH)) {
if (cpa.flags & (CPA_PAGES_ARRAY | CPA_ARRAY)) {
- cpa_flush_array(addr, numpages, cache,
+ cpa_flush_array(baddr, addr, numpages, cache,
cpa.flags, pages);
} else
cpa_flush_range(baddr, numpages, cache);

\
 
 \ /
  Last update: 2018-09-19 11:02    [W:0.198 / U:2.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site