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| author | Zhenzhong Duan <zhenzhong.duan@oracle.com> | 2019-07-25 10:39:09 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-04 09:35:00 +0200 |
| commit | cef888755a349443079b5538e6a74b88b3264c55 (patch) | |
| tree | 245d3a86b2ff55ee62b9055bfd43c3b0cedaa2e8 /lib/notifier-error-inject.c | |
| parent | 50b8699c6b44aa8389ba71a9fba2de5686a87c69 (diff) | |
x86/speculation/mds: Apply more accurate check on hypervisor platform
commit 517c3ba00916383af6411aec99442c307c23f684 upstream.
X86_HYPER_NATIVE isn't accurate for checking if running on native platform,
e.g. CONFIG_HYPERVISOR_GUEST isn't set or "nopv" is enabled.
Checking the CPU feature bit X86_FEATURE_HYPERVISOR to determine if it's
running on native platform is more accurate.
This still doesn't cover the platforms on which X86_FEATURE_HYPERVISOR is
unsupported, e.g. VMware, but there is nothing which can be done about this
scenario.
Fixes: 8a4b06d391b0 ("x86/speculation/mds: Add sysfs reporting for MDS")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1564022349-17338-1-git-send-email-zhenzhong.duan@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions