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memory, exec: Expose all memory block related flags.

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We need to use these flags in other files rather than just in exec.c,
For example, RAM_SHARED should be used when create a ram block from file.
We expose them the exec/memory.h

Backports commit b0e5de93811077254a536c23b713b49e12efb742 from qemu
This commit is contained in:
Junyan He 2018-08-22 12:59:52 -04:00 committed by Lioncash
parent 214dadf7e7
commit 6ead2c3d1f
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 20 additions and 15 deletions
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15
qemu/exec.c
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@ -53,21 +53,6 @@
//#define DEBUG_SUBPAGE //#define DEBUG_SUBPAGE
#if !defined(CONFIG_USER_ONLY)
/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
#define RAM_PREALLOC (1 << 0)
/* RAM is mmap-ed with MAP_SHARED */
#define RAM_SHARED (1 << 1)
/* Only a portion of RAM (used_length) is actually used, and migrated.
* This used_length size can change across reboots.
*/
#define RAM_RESIZEABLE (1 << 2)
#endif
bool set_preferred_target_page_bits(struct uc_struct *uc, int bits) bool set_preferred_target_page_bits(struct uc_struct *uc, int bits)
{ {
/* The target page size is the lowest common denominator for all /* The target page size is the lowest common denominator for all

20
qemu/include/exec/memory.h
View file

@ -62,6 +62,26 @@ struct IOMMUTLBEntry {
IOMMUAccessFlags perm; IOMMUAccessFlags perm;
}; };
/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
#define RAM_PREALLOC (1 << 0)
/* RAM is mmap-ed with MAP_SHARED */
#define RAM_SHARED (1 << 1)
/* Only a portion of RAM (used_length) is actually used, and migrated.
* This used_length size can change across reboots.
*/
#define RAM_RESIZEABLE (1 << 2)
/* UFFDIO_ZEROPAGE is available on this RAMBlock to atomically
* zero the page and wake waiting processes.
* (Set during postcopy)
*/
#define RAM_UF_ZEROPAGE (1 << 3)
/* RAM can be migrated */
#define RAM_MIGRATABLE (1 << 4)
/* /*
* Memory region callbacks * Memory region callbacks
*/ */