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hw/intc/arm_gicv3_its: Fix return codes in process_mapd()

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Fix process_mapd() to consistently return CMD_STALL for memory
errors and CMD_CONTINUE for parameter errors, as we claim in the
comments that we do.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220111171048.3545974-11-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-01-11 17:10:45 +00:00
parent f667519614
commit 00d46e72e9
1 changed files with 4 additions and 6 deletions
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10
hw/intc/arm_gicv3_its.c
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@ -597,7 +597,6 @@ static ItsCmdResult process_mapd(GICv3ITSState *s, uint64_t value,
uint64_t itt_addr; uint64_t itt_addr;
bool valid; bool valid;
MemTxResult res = MEMTX_OK; MemTxResult res = MEMTX_OK;
ItsCmdResult result = CMD_STALL;
devid = ((value & DEVID_MASK) >> DEVID_SHIFT); devid = ((value & DEVID_MASK) >> DEVID_SHIFT);
@ -606,7 +605,7 @@ static ItsCmdResult process_mapd(GICv3ITSState *s, uint64_t value,
MEMTXATTRS_UNSPECIFIED, &res); MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) { if (res != MEMTX_OK) {
return result; return CMD_STALL;
} }
size = (value & SIZE_MASK); size = (value & SIZE_MASK);
@ -616,7 +615,7 @@ static ItsCmdResult process_mapd(GICv3ITSState *s, uint64_t value,
MEMTXATTRS_UNSPECIFIED, &res); MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) { if (res != MEMTX_OK) {
return result; return CMD_STALL;
} }
itt_addr = (value & ITTADDR_MASK) >> ITTADDR_SHIFT; itt_addr = (value & ITTADDR_MASK) >> ITTADDR_SHIFT;
@ -633,11 +632,10 @@ static ItsCmdResult process_mapd(GICv3ITSState *s, uint64_t value,
* we ignore this command and move onto the next * we ignore this command and move onto the next
* command in the queue * command in the queue
*/ */
} else { return CMD_CONTINUE;
result = update_dte(s, devid, valid, size, itt_addr) ? CMD_CONTINUE : CMD_STALL;
} }
return result; return update_dte(s, devid, valid, size, itt_addr) ? CMD_CONTINUE : CMD_STALL;
} }
/* /*