The patch titled
Intel IOMMU: clflush_cache_range now takes size param
has been added to the -mm tree. Its filename is
intel-iommu-clflush_cache_range-now-takes-size-param.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Intel IOMMU: clflush_cache_range now takes size param
From: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@xxxxxxxxx>
Introduce the size param for clflush_cache_range().
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Muli Ben-Yehuda <muli@xxxxxxxxxx>
Cc: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Cc: Ashok Raj <ashok.raj@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86_64/mm/pageattr.c | 6 +++---
include/asm-x86_64/cacheflush.h | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)
diff -puN arch/x86_64/mm/pageattr.c~intel-iommu-clflush_cache_range-now-takes-size-param arch/x86_64/mm/pageattr.c
--- a/arch/x86_64/mm/pageattr.c~intel-iommu-clflush_cache_range-now-takes-size-param
+++ a/arch/x86_64/mm/pageattr.c
@@ -61,10 +61,10 @@ static struct page *split_large_page(uns
return base;
}
-static void cache_flush_page(void *adr)
+void clflush_cache_range(void *adr, int size)
{
int i;
- for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size)
+ for (i = 0; i < size; i += boot_cpu_data.x86_clflush_size)
asm volatile("clflush (%0)" :: "r" (adr + i));
}
@@ -79,7 +79,7 @@ static void flush_kernel_map(void *arg)
asm volatile("wbinvd" ::: "memory");
else list_for_each_entry(pg, l, lru) {
void *adr = page_address(pg);
- cache_flush_page(adr);
+ cache_flush_page(adr, PAGE_SIZE);
}
__flush_tlb_all();
}
diff -puN include/asm-x86_64/cacheflush.h~intel-iommu-clflush_cache_range-now-takes-size-param include/asm-x86_64/cacheflush.h
--- a/include/asm-x86_64/cacheflush.h~intel-iommu-clflush_cache_range-now-takes-size-param
+++ a/include/asm-x86_64/cacheflush.h
@@ -27,6 +27,7 @@
void global_flush_tlb(void);
int change_page_attr(struct page *page, int numpages, pgprot_t prot);
int change_page_attr_addr(unsigned long addr, int numpages, pgprot_t prot);
+void clflush_cache_range(void *addr, int size);
#ifdef CONFIG_DEBUG_RODATA
void mark_rodata_ro(void);
_
Patches currently in -mm which might be from anil.s.keshavamurthy@xxxxxxxxx are
jprobes-make-struct-jprobeentry-a-void.patch
jprobes-remove-jprobe_entry.patch
jprobes-make-jprobes-a-little-safer-for-users.patch
jprobes-make-jprobes-a-little-safer-for-users-fix.patch
intel-iommu-dmar-detection-and-parsing-logic.patch
intel-iommu-pci-generic-helper-function.patch
intel-iommu-pci-generic-helper-function-fix.patch
intel-iommu-clflush_cache_range-now-takes-size-param.patch
intel-iommu-iova-allocation-and-management-routines.patch
intel-iommu-iova-allocation-and-management-routines-fix.patch
intel-iommu-intel-iommu-driver.patch
intel-iommu-intel-iommu-driver-fix.patch
intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch
intel-iommu-intel-iommu-cmdline-option-forcedac.patch
intel-iommu-dmar-fault-handling-support.patch
intel-iommu-iommu-gfx-workaround.patch
intel-iommu-iommu-floppy-workaround.patch
intel-iommu-iommu-floppy-workaround-fix.patch
-
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