[kvm-unit-tests RFC PATCH 04/19] powerpc: Use the page allocator

[Alexandru Elisei <alexandru.elisei@xxxxxxx>]

The spapr_hcall test makes two page sized allocations using the physical
allocator. Initialize the page allocator and use alloc_page() directly.

CC: Laurent Vivier <lvivier@xxxxxxxxxx>
CC: Thomas Huth <thuth@xxxxxxxxxx>
CC: kvm-ppc@xxxxxxxxxxxxxxx
Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
---
 lib/powerpc/setup.c     | 8 ++++++++
 powerpc/Makefile.common | 1 +
 powerpc/spapr_hcall.c   | 5 +++--
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/powerpc/setup.c b/lib/powerpc/setup.c
index 1be4c030012b..bb39711af31c 100644
--- a/lib/powerpc/setup.c
+++ b/lib/powerpc/setup.c
@@ -15,6 +15,7 @@
 #include <devicetree.h>
 #include <alloc.h>
 #include <alloc_phys.h>
+#include <alloc_page.h>
 #include <argv.h>
 #include <asm/setup.h>
 #include <asm/page.h>
@@ -111,6 +112,7 @@ static void mem_init(phys_addr_t freemem_start)
 	struct mem_region primary, mem = {
 		.start = (phys_addr_t)-1,
 	};
+	phys_addr_t base, top;
 	int nr_regs, i;
 
 	nr_regs = dt_get_memory_params(regs, NR_MEM_REGIONS);
@@ -149,6 +151,12 @@ static void mem_init(phys_addr_t freemem_start)
 	phys_alloc_init(freemem_start, primary.end - freemem_start);
 	phys_alloc_set_minimum_alignment(__icache_bytes > __dcache_bytes
 					 ? __icache_bytes : __dcache_bytes);
+
+	phys_alloc_get_unused(&base, &top);
+	base = PAGE_ALIGN(base);
+	top = top & PAGE_MASK;
+	page_alloc_init_area(0, base >> PAGE_SHIFT, top >> PAGE_SHIFT);
+	page_alloc_ops_enable();
 }
 
 void setup(const void *fdt)
diff --git a/powerpc/Makefile.common b/powerpc/Makefile.common
index 12c280c15fff..260946844998 100644
--- a/powerpc/Makefile.common
+++ b/powerpc/Makefile.common
@@ -34,6 +34,7 @@ include $(SRCDIR)/scripts/asm-offsets.mak
 cflatobjs += lib/util.o
 cflatobjs += lib/getchar.o
 cflatobjs += lib/alloc_phys.o
+cflatobjs += lib/alloc_page.o
 cflatobjs += lib/alloc.o
 cflatobjs += lib/devicetree.o
 cflatobjs += lib/powerpc/io.o
diff --git a/powerpc/spapr_hcall.c b/powerpc/spapr_hcall.c
index 823a574a4724..1a2015474b1c 100644
--- a/powerpc/spapr_hcall.c
+++ b/powerpc/spapr_hcall.c
@@ -8,6 +8,7 @@
 #include <libcflat.h>
 #include <util.h>
 #include <alloc.h>
+#include <alloc_page.h>
 #include <asm/hcall.h>
 
 #define PAGE_SIZE 4096
@@ -65,8 +66,8 @@ static void test_h_page_init(int argc, char **argv)
 	if (argc > 1)
 		report_abort("Unsupported argument: '%s'", argv[1]);
 
-	dst = memalign(PAGE_SIZE, PAGE_SIZE);
-	src = memalign(PAGE_SIZE, PAGE_SIZE);
+	dst = alloc_page();
+	src = alloc_page();
 	if (!dst || !src)
 		report_abort("Failed to alloc memory");
 
-- 
2.37.1