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64 lines
1.7 KiB
64 lines
1.7 KiB
5 months ago
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From 634ee7a8cef2eac9f41cff4b42859d9d54b204bf Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Thu, 20 Jun 2024 10:35:27 -0400
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Subject: [PATCH 29/31] MdePkg/X86UnitTestHost: set rdrand cpuid bit
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 77: UINT32 overflow in S3 ResumeCount and Pixiefail fixes
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RH-Jira: RHEL-21854 RHEL-21856 RHEL-40099
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RH-Acked-by: Gerd Hoffmann <None>
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RH-Commit: [29/31] 60851c6253df6f0114dc2c5598e0dde139d56c4c
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JIRA: https://issues.redhat.com/browse/RHEL-21856
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Upstream: Merged
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CVE: CVE-2023-45237
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commit 5e776299a2604b336a947e68593012ab2cc16eb4
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Author: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri Jun 14 11:45:53 2024 +0200
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MdePkg/X86UnitTestHost: set rdrand cpuid bit
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Set the rdrand feature bit when faking cpuid for host test cases.
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Needed to make the CryptoPkg test cases work.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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---
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MdePkg/Library/BaseLib/X86UnitTestHost.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/MdePkg/Library/BaseLib/X86UnitTestHost.c b/MdePkg/Library/BaseLib/X86UnitTestHost.c
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index d0e428457e..abc092a990 100644
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--- a/MdePkg/Library/BaseLib/X86UnitTestHost.c
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+++ b/MdePkg/Library/BaseLib/X86UnitTestHost.c
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@@ -66,6 +66,15 @@ UnitTestHostBaseLibAsmCpuid (
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OUT UINT32 *Edx OPTIONAL
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)
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{
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+ UINT32 RetEcx;
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+
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+ RetEcx = 0;
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+ switch (Index) {
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+ case 1:
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+ RetEcx |= BIT30; /* RdRand */
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+ break;
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+ }
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+
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if (Eax != NULL) {
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*Eax = 0;
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}
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@@ -73,7 +82,7 @@ UnitTestHostBaseLibAsmCpuid (
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*Ebx = 0;
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}
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if (Ecx != NULL) {
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- *Ecx = 0;
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+ *Ecx = RetEcx;
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}
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if (Edx != NULL) {
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*Edx = 0;
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--
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2.39.3
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