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crypto: fix constant randomx exceptions in large page allocator

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If allocating large pages fails, we don't try again.
This has the obvious drawback of not being able to use large pages
if they fail once.
This commit is contained in:
moneromooo-monero 2020-12-05 21:05:21 +00:00
parent 9aab19f349
commit 06e6c8bf4a
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GPG key ID: 686F07454D6CEFC3
1 changed files with 4 additions and 1 deletions
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5
src/crypto/rx-slow-hash.c
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@ -63,6 +63,7 @@ static rx_state rx_s[2] = {{CTHR_MUTEX_INIT,{0},0,0},{CTHR_MUTEX_INIT,{0},0,0}};
static randomx_dataset *rx_dataset; static randomx_dataset *rx_dataset;
static int rx_dataset_nomem; static int rx_dataset_nomem;
static int rx_dataset_nolp;
static uint64_t rx_dataset_height; static uint64_t rx_dataset_height;
static THREADV randomx_vm *rx_vm = NULL; static THREADV randomx_vm *rx_vm = NULL;
@ -316,10 +317,11 @@ void rx_slow_hash(const uint64_t mainheight, const uint64_t seedheight, const ch
} }
CTHR_MUTEX_UNLOCK(rx_dataset_mutex); CTHR_MUTEX_UNLOCK(rx_dataset_mutex);
} }
if (!(disabled_flags() & RANDOMX_FLAG_LARGE_PAGES)) { if (!(disabled_flags() & RANDOMX_FLAG_LARGE_PAGES) && !rx_dataset_nolp) {
rx_vm = randomx_create_vm(flags | RANDOMX_FLAG_LARGE_PAGES, rx_sp->rs_cache, rx_dataset); rx_vm = randomx_create_vm(flags | RANDOMX_FLAG_LARGE_PAGES, rx_sp->rs_cache, rx_dataset);
if(rx_vm == NULL) { //large pages failed if(rx_vm == NULL) { //large pages failed
mdebug(RX_LOGCAT, "Couldn't use largePages for RandomX VM"); mdebug(RX_LOGCAT, "Couldn't use largePages for RandomX VM");
rx_dataset_nolp = 1;
} }
} }
if (rx_vm == NULL) if (rx_vm == NULL)
@ -370,5 +372,6 @@ void rx_stop_mining(void) {
randomx_release_dataset(rd); randomx_release_dataset(rd);
} }
rx_dataset_nomem = 0; rx_dataset_nomem = 0;
rx_dataset_nolp = 0;
CTHR_MUTEX_UNLOCK(rx_dataset_mutex); CTHR_MUTEX_UNLOCK(rx_dataset_mutex);
} }