From: Paolo Bonzini <pbonzini@redhat.com>
To: kvm@vger.kernel.org
Cc: zxwang42@gmail.com, marcorr@google.com, seanjc@google.com,
jroedel@suse.de, varad.gautam@suse.com
Subject: [PATCH kvm-unit-tests 0/2] remove tss_descr, replace with a function
Date: Wed, 20 Oct 2021 12:53:31 -0400 [thread overview]
Message-ID: <20211020165333.953978-1-pbonzini@redhat.com> (raw)
tss_descr is declared as a struct descriptor_table_ptr but it is actualy
pointing to an _entry_ in the GDT. Also it is different per CPU, but
tss_descr does not recognize that. Fix both by reusing the code
(already present e.g. in the vmware_backdoors test) that extracts
the base from the GDT entry; and also provide a helper to retrieve
the limit, which is needed in vmx.c.
Patch 1 adjusts the structs for GDT descriptors, so that the same
code works for both 32-bit and 64-bit (apart from the high 32 bits
of the base field).
Paolo
Paolo Bonzini (2):
unify structs for GDT descriptors
replace tss_descr global with a function
lib/x86/desc.c | 26 +++++++++++--------
lib/x86/desc.h | 58 ++++++++++++++++++++++++++++++++++--------
x86/cstart64.S | 1 -
x86/svm_tests.c | 15 +++--------
x86/taskswitch.c | 2 +-
x86/vmware_backdoors.c | 22 +++++-----------
x86/vmx.c | 9 ++++---
7 files changed, 78 insertions(+), 55 deletions(-)
--
2.27.0
next reply other threads:[~2021-10-20 16:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-20 16:53 Paolo Bonzini [this message]
2021-10-20 16:53 ` [PATCH kvm-unit-tests 1/2] unify structs for GDT descriptors Paolo Bonzini
2021-10-20 17:58 ` Sean Christopherson
2021-10-20 19:10 ` Paolo Bonzini
2021-10-20 20:05 ` Jim Mattson
2021-10-20 16:53 ` [PATCH kvm-unit-tests 2/2] replace tss_descr global with a function Paolo Bonzini
2021-10-20 18:01 ` Sean Christopherson
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