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hw/i386/acpi-build: return a non-var package from _PRT() 

Windows XP seems to have issues when _PRT() returns a variable package.
We know in advance the size, so we can return a fixed package instead.
https://lore.kernel.org/qemu-devel/c82d9331-a8ce-4bb0-b51f-2ee789e27c86@ilande.co.uk/T/#m541190c942676bccf7a7f7fbcb450d94a4e2da53

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Fixes: 99cb2c6c7b ("hw/i386/acpi-build: Return a pre-computed _PRT table")
Closes: https://lore.kernel.org/all/eb11c984-ebe4-4a09-9d71-1e9db7fe7e6f@ilande.co.uk/
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Message-Id: <20240924132417.739809-3-ribalda@chromium.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Ricardo Ribalda 2024-09-24 13:24:11 +00:00 committed by Michael S. Tsirkin
parent d944497b55
commit 7916bb5431
1 changed files with 2 additions and 1 deletions
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3
hw/i386/acpi-build.c
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@ -740,7 +740,8 @@ static Aml *build_prt(bool is_pci0_prt)
int pin;
method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
rt_pkg = aml_varpackage(nroutes);
assert(nroutes < 256);
rt_pkg = aml_package(nroutes);
for (pin = 0; pin < nroutes; pin++) {
Aml *pkg = aml_package(4);