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Implement lock IRQ nesting via stack variables/contexts
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This commit is contained in:
Kamil Kowalczyk
2026-01-14 22:11:56 +01:00
parent 55166f9d5f
commit 270ff507d4
22 changed files with 197 additions and 145 deletions
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11
kernel/amd64/hpet.c
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@@ -60,8 +60,9 @@ static void amd64_hpet_write32 (uint32_t reg, uint32_t value) {
static uint64_t amd64_hpet_read_counter (void) {
uint64_t value;
spin_lock_ctx_t ctxhrc;
spin_lock (&hpet_lock);
spin_lock (&hpet_lock, &ctxhrc);
if (!hpet_32bits)
value = amd64_hpet_read64 (HPET_MCVR);
@@ -76,13 +77,15 @@ static uint64_t amd64_hpet_read_counter (void) {
value = ((uint64_t)hi1 << 32) | lo;
}
spin_unlock (&hpet_lock);
spin_unlock (&hpet_lock, &ctxhrc);
return value;
}
static void amd64_hpet_write_counter (uint64_t value) {
spin_lock (&hpet_lock);
spin_lock_ctx_t ctxhwc;
spin_lock (&hpet_lock, &ctxhwc);
if (!hpet_32bits)
amd64_hpet_write64 (HPET_MCVR, value);
@@ -91,7 +94,7 @@ static void amd64_hpet_write_counter (uint64_t value) {
amd64_hpet_write32 (HPET_MCVR + 4, (uint32_t)(value >> 32));
}
spin_unlock (&hpet_lock);
spin_unlock (&hpet_lock, &ctxhwc);
}
/* Sleep for a given amount of microseconds. This time can last longer due to \ref hpet_lock being