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dm: add hugetlb memory management support

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Type '-T' in DM cmdline to enable hugetlb memory allocation.
It enabled 2 level of huge page:
Level 1: size 2M, path: /run/hugepage/acrn/huge_lv1/guid
Level 2: size 1G, path: /run/hugepage/acrn/huge_lv2/guid

NOTE:
before running, please make sure system already have enough hugepages
reserved under:
/sys/kernel/mm/hugepages/hugepages-xxxxkB/nr_hugepages

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Xu, Anthony <anthony.xu@intel.com>
This commit is contained in:
Jason Chen CJ
2018-03-14 22:03:52 +08:00
committed by Jack Ren
parent ac5da17e52
commit 4cad694be2
6 changed files with 546 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
devicemodel/include/vmmapi.h
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@@ -41,6 +41,12 @@
*/
#define VMMAPI_VERSION 0103 /* 2 digit major followed by 2 digit minor */
#define MB (1024 * 1024UL)
#define GB (1024 * 1024 * 1024UL)
#define ALIGN_UP(x, align) (((x) + ((align)-1)) & ~((align)-1))
#define ALIGN_DOWN(x, align) ((x) & ~((align)-1))
struct iovec;
struct vmctx {
@@ -116,6 +122,9 @@ void vm_destroy(struct vmctx *ctx);
int vm_parse_memsize(const char *optarg, size_t *memsize);
int vm_setup_memory(struct vmctx *ctx, size_t len, enum vm_mmap_style s);
void vm_unsetup_memory(struct vmctx *ctx);
bool check_hugetlb_support(void);
int hugetlb_setup_memory(struct vmctx *ctx);
void hugetlb_unsetup_memory(struct vmctx *ctx);
void *vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len);
uint32_t vm_get_lowmem_limit(struct vmctx *ctx);
void vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit);
@@ -150,4 +159,5 @@ int vm_create_vcpu(struct vmctx *ctx, int vcpu_id);
int vm_get_cpu_state(struct vmctx *ctx, void *state_buf);
extern bool hugetlb;
#endif /* _VMMAPI_H_ */