linux-kernel - [PATCH 5.3 266/344] kvm: x86: Add "significant index" flag to a few CPUID leaves

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191003154606.614872551@linuxfoundation.org>
Date:   Thu,  3 Oct 2019 17:53:51 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jim Mattson <jmattson@...gle.com>,
        Peter Shier <pshier@...gle.com>,
        Steve Rutherford <srutherford@...gle.com>,
        Krish Sadhukhan <krish.sadhukhan@...cle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH 5.3 266/344] kvm: x86: Add "significant index" flag to a few CPUID leaves

From: Jim Mattson <jmattson@...gle.com>

commit a06dcd625d6181747fac7f4c140b5a4c397a778c upstream.

According to the Intel SDM, volume 2, "CPUID," the index is
significant (or partially significant) for CPUID leaves 0FH, 10H, 12H,
17H, 18H, and 1FH.

Add the corresponding flag to these CPUID leaves in do_host_cpuid().

Signed-off-by: Jim Mattson <jmattson@...gle.com>
Reviewed-by: Peter Shier <pshier@...gle.com>
Reviewed-by: Steve Rutherford <srutherford@...gle.com>
Fixes: a87f2d3a6eadab ("KVM: x86: Add Intel CPUID.1F cpuid emulation support")
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@...cle.com>
Cc: stable@...r.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/x86/kvm/cpuid.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -304,7 +304,13 @@ static void do_host_cpuid(struct kvm_cpu
 	case 7:
 	case 0xb:
 	case 0xd:
+	case 0xf:
+	case 0x10:
+	case 0x12:
 	case 0x14:
+	case 0x17:
+	case 0x18:
+	case 0x1f:
 	case 0x8000001d:
 		entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
 		break;