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hw/intc/arm_gicv3_its: Convert int ID check to num_intids convention

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The bounds check on the number of interrupt IDs is correct, but
doesn't match our convention; change the variable name, initialize it
to the 2^n value rather than (2^n)-1, and use >= instead of > in the
comparison.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20220111171048.3545974-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-01-11 17:10:37 +00:00
parent 8f809f6992
commit 905720f18d
1 changed files with 3 additions and 3 deletions
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6
hw/intc/arm_gicv3_its.c
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@ -338,7 +338,7 @@ static bool process_mapti(GICv3ITSState *s, uint64_t value, uint32_t offset,
uint32_t devid, eventid;
uint32_t pIntid = 0;
uint64_t num_eventids;
uint32_t max_Intid;
uint32_t num_intids;
bool dte_valid;
MemTxResult res = MEMTX_OK;
uint16_t icid = 0;
@ -379,11 +379,11 @@ static bool process_mapti(GICv3ITSState *s, uint64_t value, uint32_t offset,
}
dte_valid = FIELD_EX64(dte, DTE, VALID);
num_eventids = 1ULL << (FIELD_EX64(dte, DTE, SIZE) + 1);
max_Intid = (1ULL << (GICD_TYPER_IDBITS + 1)) - 1;
num_intids = 1ULL << (GICD_TYPER_IDBITS + 1);
if ((devid >= s->dt.num_ids) || (icid >= s->ct.num_ids)
|| !dte_valid || (eventid >= num_eventids) ||
(((pIntid < GICV3_LPI_INTID_START) || (pIntid > max_Intid)) &&
(((pIntid < GICV3_LPI_INTID_START) || (pIntid >= num_intids)) &&
(pIntid != INTID_SPURIOUS))) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: invalid command attributes "