Author: hselasky
Date: Mon Mar 27 17:09:11 2017
New Revision: 316034
URL: https://svnweb.freebsd.org/changeset/base/316034
Log:
Add more platforms supporting the direct map feature in the LinuxKPI.
MFC after: 1 week
Sponsored by: Mellanox Technologies
Modified:
head/sys/compat/linuxkpi/common/src/linux_page.c
Modified: head/sys/compat/linuxkpi/common/src/linux_page.c
==============================================================================
--- head/sys/compat/linuxkpi/common/src/linux_page.c Mon Mar 27 17:04:11
2017 (r316033)
+++ head/sys/compat/linuxkpi/common/src/linux_page.c Mon Mar 27 17:09:11
2017 (r316034)
@@ -63,10 +63,16 @@ __FBSDID("$FreeBSD$");
#include <linux/mm.h>
#include <linux/preempt.h>
+#if defined(__amd64__) || defined(__aarch64__) || defined(__riscv__)
+#define LINUXKPI_HAVE_DMAP
+#else
+#undef LINUXKPI_HAVE_DMAP
+#endif
+
void *
linux_page_address(struct page *page)
{
-#ifdef __amd64__
+#ifdef LINUXKPI_HAVE_DMAP
return ((void *)PHYS_TO_DMAP(VM_PAGE_TO_PHYS(page)));
#else
if (page->object != kmem_object && page->object != kernel_object)
@@ -79,7 +85,7 @@ linux_page_address(struct page *page)
vm_page_t
linux_alloc_pages(gfp_t flags, unsigned int order)
{
-#ifdef __amd64__
+#ifdef LINUXKPI_HAVE_DMAP
unsigned long npages = 1UL << order;
int req = (flags & M_ZERO) ? (VM_ALLOC_ZERO | VM_ALLOC_NOOBJ |
VM_ALLOC_NORMAL) : (VM_ALLOC_NOOBJ | VM_ALLOC_NORMAL);
@@ -137,7 +143,7 @@ retry:
void
linux_free_pages(vm_page_t page, unsigned int order)
{
-#ifdef __amd64__
+#ifdef LINUXKPI_HAVE_DMAP
unsigned long npages = 1UL << order;
unsigned long x;
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