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| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-02-08 12:34:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:23:36 +0300 |
| commit | 5baa1283d6984effae12de78e9b4dcc7cd3b3e6b (patch) | |
| tree | 07cfe133571607a0862e5ad6477e81c252c52154 /drivers/hv | |
| parent | 468b136c2ca13947477b2097bdbdaa0f79faa556 (diff) | |
| download | linux-5baa1283d6984effae12de78e9b4dcc7cd3b3e6b.tar.xz | |
KVM: x86/emulator: Defer not-present segment check in __load_segment_descriptor()
[ Upstream commit ca85f002258fdac3762c57d12d5e6e401b6a41af ]
Per Intel's SDM on the "Instruction Set Reference", when
loading segment descriptor, not-present segment check should
be after all type and privilege checks. But the emulator checks
it first, then #NP is triggered instead of #GP if privilege fails
and segment is not present. Put not-present segment check after
type and privilege checks in __load_segment_descriptor().
Fixes: 38ba30ba51a00 (KVM: x86 emulator: Emulate task switch in emulator.c)
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Message-Id: <52573c01d369f506cadcf7233812427cf7db81a7.1644292363.git.houwenlong.hwl@antgroup.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hv')
0 files changed, 0 insertions, 0 deletions