[PATCH 02/10] kvm tools, powerpc: Use mmap_anon_or_hugetblfs() in kvm__arch_init()
It implements essentially the same logic. The one difference is it sets
MAP_NORESERVE when using anonymous mmap, but I think that is OK.
Reword the comment about hugetblfs, we are no longer required to use
hugepages to back the guest.
Signed-off-by: Michael Ellerman
---
tools/kvm/powerpc/kvm.c | 20 ++--
1 file changed, 6 insertions(+), 14 deletions(-)
diff --git a/tools/kvm/powerpc/kvm.c b/tools/kvm/powerpc/kvm.c
index cbc0d8f..0d8a9da 100644
--- a/tools/kvm/powerpc/kvm.c
+++ b/tools/kvm/powerpc/kvm.c
@@ -97,20 +97,12 @@ void kvm__arch_init(struct kvm *kvm, const char
*hugetlbfs_path, u64 ram_size)
kvm->ram_size = ram_size;
- /*
-* Currently, HV-mode PPC64 SPAPR requires that we map from hugetlfs.
-* Allow a 'default' option to assist.
-* PR-mode does not require this.
-*/
- if (hugetlbfs_path) {
- if (!strcmp(hugetlbfs_path, "default"))
- hugetlbfs_path = HUGETLBFS_PATH;
- kvm->ram_start = mmap_hugetlbfs(hugetlbfs_path, kvm->ram_size);
- } else {
- kvm->ram_start = mmap(0, kvm->ram_size, PROT_READ | PROT_WRITE,
- MAP_ANON | MAP_PRIVATE,
- -1, 0);
- }
+ /* Map "default" hugetblfs path to the standard 16M mount point */
+ if (hugetlbfs_path && !strcmp(hugetlbfs_path, "default"))
+ hugetlbfs_path = HUGETLBFS_PATH;
+
+ kvm->ram_start = mmap_anon_or_hugetlbfs(hugetlbfs_path, kvm->ram_size);
+
if (kvm->ram_start == MAP_FAILED)
die("Couldn't map %lld bytes for RAM (%d)\n",
kvm->ram_size, errno);
--
1.7.9.5
--
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[PATCH 02/10] kvm tools, powerpc: Use mmap_anon_or_hugetblfs() in kvm__arch_init()
It implements essentially the same logic. The one difference is it sets
MAP_NORESERVE when using anonymous mmap, but I think that is OK.
Reword the comment about hugetblfs, we are no longer required to use
hugepages to back the guest.
Signed-off-by: Michael Ellerman mich...@ellerman.id.au
---
tools/kvm/powerpc/kvm.c | 20 ++--
1 file changed, 6 insertions(+), 14 deletions(-)
diff --git a/tools/kvm/powerpc/kvm.c b/tools/kvm/powerpc/kvm.c
index cbc0d8f..0d8a9da 100644
--- a/tools/kvm/powerpc/kvm.c
+++ b/tools/kvm/powerpc/kvm.c
@@ -97,20 +97,12 @@ void kvm__arch_init(struct kvm *kvm, const char
*hugetlbfs_path, u64 ram_size)
kvm-ram_size = ram_size;
- /*
-* Currently, HV-mode PPC64 SPAPR requires that we map from hugetlfs.
-* Allow a 'default' option to assist.
-* PR-mode does not require this.
-*/
- if (hugetlbfs_path) {
- if (!strcmp(hugetlbfs_path, default))
- hugetlbfs_path = HUGETLBFS_PATH;
- kvm-ram_start = mmap_hugetlbfs(hugetlbfs_path, kvm-ram_size);
- } else {
- kvm-ram_start = mmap(0, kvm-ram_size, PROT_READ | PROT_WRITE,
- MAP_ANON | MAP_PRIVATE,
- -1, 0);
- }
+ /* Map default hugetblfs path to the standard 16M mount point */
+ if (hugetlbfs_path !strcmp(hugetlbfs_path, default))
+ hugetlbfs_path = HUGETLBFS_PATH;
+
+ kvm-ram_start = mmap_anon_or_hugetlbfs(hugetlbfs_path, kvm-ram_size);
+
if (kvm-ram_start == MAP_FAILED)
die(Couldn't map %lld bytes for RAM (%d)\n,
kvm-ram_size, errno);
--
1.7.9.5
--
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