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apei: Mark ReadAckRegister resource as shareable

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Work around vendors who use the same address for multiple
ReadAckRegisters in their ACPI HEST table.  This
allows apei to attach cleanly on Ampere Altra servers.
Note the issue is not specific to Ampere, I've run into
it with at least one other vendor (whose server is not
yet released).

Sponsored by: Netflix
Reviewed by: jhb
This commit is contained in:
Andrew Gallatin 2024-01-09 15:52:07 -05:00
parent 09fa78d438
commit 5cd08d9ecf
1 changed files with 1 additions and 1 deletions
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2
sys/dev/acpica/acpi_apei.c
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@ -711,7 +711,7 @@ apei_attach(device_t dev)
if (ge->v1.Header.Type == ACPI_HEST_TYPE_GENERIC_ERROR_V2) {
ge->res2_rid = rid++;
acpi_bus_alloc_gas(dev, &ge->res2_type, &ge->res2_rid,
&ge->v2.ReadAckRegister, &ge->res2, 0);
&ge->v2.ReadAckRegister, &ge->res2, RF_SHAREABLE);
if (ge->res2 == NULL)
device_printf(dev, "Can't allocate ack resource.\n");
}