linux-kernel - [PATCH 1/4] KVM: selftests: x86: Fix an error in comment of amx

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: <20230110185823.1856951-2-mizhang@google.com>
Date:   Tue, 10 Jan 2023 18:58:20 +0000
From:   Mingwei Zhang <mizhang@...gle.com>
To:     kvm@...r.kernel.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jim Mattson <jmattson@...gle.com>,
        Venkatesh Srinivas <venkateshs@...gle.com>,
        Aaron Lewis <aaronlewis@...gle.com>,
        Mingwei Zhang <mizhang@...gle.com>
Subject: [PATCH 1/4] KVM: selftests: x86: Fix an error in comment of amx_test

After the execution of __tilerelease(), AMX component will be in INIT
state. Therefore, execution of xsavec saving the AMX state into memory will
cause the XSTATE_BV[18] cleared in xheader. However, the XCOMP_BV[18] will
remain set. Fix the error in comment.

Cc: Jim Mattson <jmattson@...gle.com>
Cc: Venkatesh Srinivas <venkateshs@...gle.com>
Cc: Aaron Lewis <aaronlewis@...gle.com>

Signed-off-by: Mingwei Zhang <mizhang@...gle.com>
---
 tools/testing/selftests/kvm/x86_64/amx_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c
index bd72c6eb3b67..16533949a189 100644
--- a/tools/testing/selftests/kvm/x86_64/amx_test.c
+++ b/tools/testing/selftests/kvm/x86_64/amx_test.c
@@ -204,7 +204,7 @@ static void __attribute__((__flatten__)) guest_code(struct tile_config *amx_cfg,
 	GUEST_SYNC(4);
 	__tilerelease();
 	GUEST_SYNC(5);
-	/* bit 18 not in the XCOMP_BV after xsavec() */
+	/* bit 18 not in the XSTATE_BV after xsavec() */
 	set_xstatebv(xsave_data, XFEATURE_MASK_XTILEDATA);
 	__xsavec(xsave_data, XFEATURE_MASK_XTILEDATA);
 	GUEST_ASSERT((get_xstatebv(xsave_data) & XFEATURE_MASK_XTILEDATA) == 0);
-- 
2.39.0.314.g84b9a713c41-goog