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From: Mingwei Zhang <mizhang@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	Mingwei Zhang <mizhang@google.com>,
	Jim Mattson <jmattson@google.com>,
	Venkatesh Srinivas <venkateshs@google.com>,
	Aaron Lewis <aaronlewis@google.com>,
	"Chang S. Bae" <chang.seok.bae@intel.com>,
	Chao Gao <chao.gao@intel.com>
Subject: [PATCH v3 05/13] KVM: selftests: x86: Add check of CR0.TS in the #NM handler in amx_test
Date: Tue, 21 Feb 2023 16:36:47 +0000	[thread overview]
Message-ID: <20230221163655.920289-6-mizhang@google.com> (raw)
In-Reply-To: <20230221163655.920289-1-mizhang@google.com>

Add check of CR0.TS[bit 3] before the check of IA32_XFD_ERR in the #NM
handler in amx_test. This is because XFD may not be the only reason of
the IA32_XFD MSR and the bitmap corresponding to the state components
required by the faulting instruction." (Intel SDM vol 1. Section 13.14)

Add the missing check of CR0.TS.

Signed-off-by: Mingwei Zhang <mizhang@google.com>
---
 tools/testing/selftests/kvm/x86_64/amx_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c
index ba8c0afdbac8..ac49b14460b6 100644
--- a/tools/testing/selftests/kvm/x86_64/amx_test.c
+++ b/tools/testing/selftests/kvm/x86_64/amx_test.c
@@ -216,6 +216,7 @@ void guest_nm_handler(struct ex_regs *regs)
 {
 	/* Check if #NM is triggered by XFEATURE_MASK_XTILEDATA */
 	GUEST_SYNC(7);
+	GUEST_ASSERT((get_cr0() & X86_CR0_TS) == 0);
 	GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA);
 	GUEST_SYNC(8);
 	GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA);
-- 
2.39.2.637.g21b0678d19-goog


  parent reply	other threads:[~2023-02-21 16:37 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-21 16:36 [PATCH v3 00/13] Overhauling amx_test Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 01/13] x86/fpu/xstate: Avoid getting xstate address of init_fpstate if fpstate contains the component Mingwei Zhang
2023-02-21 20:54   ` Thomas Gleixner
2023-02-22  3:05   ` Chang S. Bae
2023-02-22  8:38     ` Thomas Gleixner
2023-02-22 18:40       ` Mingwei Zhang
2023-02-22 22:13         ` Chang S. Bae
2023-02-24 23:56           ` Mingwei Zhang
2023-02-25  0:47             ` Chang S. Bae
2023-02-25  1:09               ` Mingwei Zhang
2023-02-25  1:39                 ` Chang S. Bae
2023-02-21 16:36 ` [PATCH v3 02/13] KVM: selftests: x86: Add a working xstate data structure Mingwei Zhang
2023-03-24 20:36   ` Sean Christopherson
2023-02-21 16:36 ` [PATCH v3 03/13] KVM: selftests: x86: Fix an error in comment of amx_test Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 04/13] KVM: selftests: x86: Enable checking on xcomp_bv in amx_test Mingwei Zhang
2023-02-21 16:36 ` Mingwei Zhang [this message]
2023-03-24 20:38   ` [PATCH v3 05/13] KVM: selftests: x86: Add check of CR0.TS in the #NM handler " Sean Christopherson
2023-02-21 16:36 ` [PATCH v3 06/13] KVM: selftests: x86: Add the XFD check to IA32_XFD in #NM handler Mingwei Zhang
2023-03-24 20:39   ` Sean Christopherson
2023-02-21 16:36 ` [PATCH v3 07/13] KVM: selftests: x86: Fix the checks to XFD_ERR using and operation Mingwei Zhang
2023-03-24 20:41   ` Sean Christopherson
2023-02-21 16:36 ` [PATCH v3 08/13] KVM: selftests: x86: Repeat the checking of xheader when IA32_XFD[XTILEDATA] is set in amx_test Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 09/13] KVM: selftests: x86: Assert that XTILE is XSAVE-enabled Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 10/13] KVM: selftests: x86: Assert that both XTILE{CFG,DATA} are XSAVE-enabled Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 11/13] KVM: selftests: x86: Remove redundant check that XSAVE is supported Mingwei Zhang
2023-03-24 20:43   ` Sean Christopherson
2023-02-21 16:36 ` [PATCH v3 12/13] KVM: selftests: x86: Check that the palette table exists before using it Mingwei Zhang
2023-02-21 16:36 ` [PATCH v3 13/13] KVM: selftests: x86: Check that XTILEDATA supports XFD Mingwei Zhang
2023-03-24 20:58 ` [PATCH v3 00/13] Overhauling amx_test Sean Christopherson
2023-03-24 21:01   ` Sean Christopherson
2023-03-24 21:30     ` Sean Christopherson

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