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TCG patch queue:

Browse source 
Workaround macos assembler lossage.
 Eliminate tb_lock.
 Fix TB code generation overflow.
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180615' into staging

TCG patch queue:

Workaround macos assembler lossage.
Eliminate tb_lock.
Fix TB code generation overflow.

# gpg: Signature made Fri 15 Jun 2018 20:40:56 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20180615:
  tcg: Reduce max TB opcode count
  tcg: remove tb_lock
  translate-all: remove tb_lock mention from cpu_restore_state_from_tb
  cputlb: remove tb_lock from tlb_flush functions
  translate-all: protect TB jumps with a per-destination-TB lock
  translate-all: discard TB when tb_link_page returns an existing matching TB
  translate-all: introduce assert_no_pages_locked
  translate-all: add page_locked assertions
  translate-all: use per-page locking in !user-mode
  translate-all: move tb_invalidate_phys_page_range up in the file
  translate-all: work page-by-page in tb_invalidate_phys_range_1
  translate-all: remove hole in PageDesc
  translate-all: make l1_map lockless
  translate-all: iterate over TBs in a page with PAGE_FOR_EACH_TB
  tcg: move tb_ctx.tb_phys_invalidate_count to tcg_ctx
  tcg: track TBs with per-region BST's
  qht: return existing entry when qht_insert fails
  qht: require a default comparison function
  tcg/i386: Use byte form of xgetbv instruction

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-06-21 17:54:26 +01:00
commit 33836a7315
25 changed files with 1157 additions and 490 deletions
Download patch file Download diff file Expand all files Collapse all files

32
include/qemu/qht.h
View file

@ -11,8 +11,11 @@
#include "qemu/thread.h"
#include "qemu/qdist.h"
typedef bool (*qht_cmp_func_t)(const void *a, const void *b);
struct qht {
struct qht_map *map;
qht_cmp_func_t cmp;
QemuMutex lock; /* serializes setters of ht->map */
unsigned int mode;
};
@ -47,10 +50,12 @@ typedef void (*qht_iter_func_t)(struct qht *ht, void *p, uint32_t h, void *up);
/**
* qht_init - Initialize a QHT
* @ht: QHT to be initialized
* @cmp: default comparison function. Cannot be NULL.
* @n_elems: number of entries the hash table should be optimized for.
* @mode: bitmask with OR'ed QHT_MODE_*
*/
void qht_init(struct qht *ht, size_t n_elems, unsigned int mode);
void qht_init(struct qht *ht, qht_cmp_func_t cmp, size_t n_elems,
unsigned int mode);
/**
* qht_destroy - destroy a previously initialized QHT
@ -65,6 +70,7 @@ void qht_destroy(struct qht *ht);
* @ht: QHT to insert to
* @p: pointer to be inserted
* @hash: hash corresponding to @p
* @existing: address where the pointer to an existing entry can be copied to
*
* Attempting to insert a NULL @p is a bug.
* Inserting the same pointer @p with different @hash values is a bug.
@ -73,16 +79,18 @@ void qht_destroy(struct qht *ht);
* inserted into the hash table.
*
* Returns true on success.
* Returns false if the @p-@hash pair already exists in the hash table.
* Returns false if there is an existing entry in the table that is equivalent
* (i.e. ht->cmp matches and the hash is the same) to @p-@h. If @existing
* is !NULL, a pointer to this existing entry is copied to it.
*/
bool qht_insert(struct qht *ht, void *p, uint32_t hash);
bool qht_insert(struct qht *ht, void *p, uint32_t hash, void **existing);
/**
* qht_lookup - Look up a pointer in a QHT
* qht_lookup_custom - Look up a pointer using a custom comparison function.
* @ht: QHT to be looked up
* @func: function to compare existing pointers against @userp
* @userp: pointer to pass to @func
* @hash: hash of the pointer to be looked up
* @func: function to compare existing pointers against @userp
*
* Needs to be called under an RCU read-critical section.
*
@ -94,8 +102,18 @@ bool qht_insert(struct qht *ht, void *p, uint32_t hash);
* Returns the corresponding pointer when a match is found.
* Returns NULL otherwise.
*/
void *qht_lookup(struct qht *ht, qht_lookup_func_t func, const void *userp,
uint32_t hash);
void *qht_lookup_custom(struct qht *ht, const void *userp, uint32_t hash,
qht_lookup_func_t func);
/**
* qht_lookup - Look up a pointer in a QHT
* @ht: QHT to be looked up
* @userp: pointer to pass to the comparison function
* @hash: hash of the pointer to be looked up
*
* Calls qht_lookup_custom() using @ht's default comparison function.
*/
void *qht_lookup(struct qht *ht, const void *userp, uint32_t hash);
/**
* qht_remove - remove a pointer from the hash table