|
 |
0727d3 |
From af082f3499de265d123157d097b5c84981e0aa63 Mon Sep 17 00:00:00 2001
|
|
|
0727d3 |
From: Jon Maloy <jmaloy@redhat.com>
|
|
|
0727d3 |
Date: Wed, 30 Mar 2022 14:52:34 -0400
|
|
|
0727d3 |
Subject: [PATCH 15/18] acpi: fix OEM ID/OEM Table ID padding
|
|
|
0727d3 |
|
|
|
0727d3 |
RH-Author: Jon Maloy <jmaloy@redhat.com>
|
|
|
0727d3 |
RH-MergeRequest: 141: acpi: fix QEMU crash when started with SLIC table
|
|
|
0727d3 |
RH-Commit: [7/10] 51ea859cbe12b5a902d529ab589d18757d98f71d (jmaloy/qemu-kvm)
|
|
|
0727d3 |
RH-Bugzilla: 2062611
|
|
|
0727d3 |
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
|
|
|
0727d3 |
|
|
|
0727d3 |
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2062611
|
|
|
0727d3 |
Upstream: Merged
|
|
|
0727d3 |
|
|
|
0727d3 |
commit 748c030f360a940fe0c9382c8ca1649096c3a80d
|
|
|
0727d3 |
Author: Igor Mammedov <imammedo@redhat.com>
|
|
|
0727d3 |
Date: Wed Jan 12 08:03:31 2022 -0500
|
|
|
0727d3 |
|
|
|
0727d3 |
acpi: fix OEM ID/OEM Table ID padding
|
|
|
0727d3 |
|
|
|
0727d3 |
Commit [2] broke original '\0' padding of OEM ID and OEM Table ID
|
|
|
0727d3 |
fields in headers of ACPI tables. While it doesn't have impact on
|
|
|
0727d3 |
default values since QEMU uses 6 and 8 characters long values
|
|
|
0727d3 |
respectively, it broke usecase where IDs are provided on QEMU CLI.
|
|
|
0727d3 |
It shouldn't affect guest (but may cause licensing verification
|
|
|
0727d3 |
issues in guest OS).
|
|
|
0727d3 |
One of the broken usecases is user supplied SLIC table with IDs
|
|
|
0727d3 |
shorter than max possible length, where [2] mangles IDs with extra
|
|
|
0727d3 |
spaces in RSDT and FADT tables whereas guest OS expects those to
|
|
|
0727d3 |
mirror the respective values of the used SLIC table.
|
|
|
0727d3 |
|
|
|
0727d3 |
Fix it by replacing whitespace padding with '\0' padding in
|
|
|
0727d3 |
accordance with [1] and expectations of guest OS
|
|
|
0727d3 |
|
|
|
0727d3 |
1) ACPI spec, v2.0b
|
|
|
0727d3 |
17.2 AML Grammar Definition
|
|
|
0727d3 |
...
|
|
|
0727d3 |
//OEM ID of up to 6 characters. If the OEM ID is
|
|
|
0727d3 |
//shorter than 6 characters, it can be terminated
|
|
|
0727d3 |
//with a NULL character.
|
|
|
0727d3 |
|
|
|
0727d3 |
2)
|
|
|
0727d3 |
Fixes: 602b458201 ("acpi: Permit OEM ID and OEM table ID fields to be changed")
|
|
|
0727d3 |
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/707
|
|
|
0727d3 |
Reported-by: Dmitry V. Orekhov <dima.orekhov@gmail.com>
|
|
|
0727d3 |
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
|
|
|
0727d3 |
Cc: qemu-stable@nongnu.org
|
|
|
0727d3 |
Message-Id: <20220112130332.1648664-4-imammedo@redhat.com>
|
|
|
0727d3 |
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
|
|
|
0727d3 |
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
|
|
0727d3 |
Reviewed-by: Ani Sinha <ani@anisinha.ca>
|
|
|
0727d3 |
Tested-by: Dmitry V. Orekhov dima.orekhov@gmail.com
|
|
|
0727d3 |
|
|
|
0727d3 |
(cherry picked from commit 748c030f360a940fe0c9382c8ca1649096c3a80d)
|
|
|
0727d3 |
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
|
|
|
0727d3 |
---
|
|
|
0727d3 |
hw/acpi/aml-build.c | 4 ++--
|
|
|
0727d3 |
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
0727d3 |
|
|
|
0727d3 |
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
|
|
|
0727d3 |
index b3b3310df3..65148d5b9d 100644
|
|
|
0727d3 |
--- a/hw/acpi/aml-build.c
|
|
|
0727d3 |
+++ b/hw/acpi/aml-build.c
|
|
|
0727d3 |
@@ -1724,9 +1724,9 @@ void acpi_table_begin(AcpiTable *desc, GArray *array)
|
|
|
0727d3 |
build_append_int_noprefix(array, 0, 4); /* Length */
|
|
|
0727d3 |
build_append_int_noprefix(array, desc->rev, 1); /* Revision */
|
|
|
0727d3 |
build_append_int_noprefix(array, 0, 1); /* Checksum */
|
|
|
0727d3 |
- build_append_padded_str(array, desc->oem_id, 6, ' '); /* OEMID */
|
|
|
0727d3 |
+ build_append_padded_str(array, desc->oem_id, 6, '\0'); /* OEMID */
|
|
|
0727d3 |
/* OEM Table ID */
|
|
|
0727d3 |
- build_append_padded_str(array, desc->oem_table_id, 8, ' ');
|
|
|
0727d3 |
+ build_append_padded_str(array, desc->oem_table_id, 8, '\0');
|
|
|
0727d3 |
build_append_int_noprefix(array, 1, 4); /* OEM Revision */
|
|
|
0727d3 |
g_array_append_vals(array, ACPI_BUILD_APPNAME8, 4); /* Creator ID */
|
|
|
0727d3 |
build_append_int_noprefix(array, 1, 4); /* Creator Revision */
|
|
|
0727d3 |
--
|
|
|
0727d3 |
2.27.0
|
|
|
0727d3 |
|