2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
linux-next/arch/x86
Babu Moger 37486135d3 KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c
Though rdpkru and wrpkru are contingent upon CR4.PKE, the PKRU
resource isn't. It can be read with XSAVE and written with XRSTOR.
So, if we don't set the guest PKRU value here(kvm_load_guest_xsave_state),
the guest can read the host value.

In case of kvm_load_host_xsave_state, guest with CR4.PKE clear could
potentially use XRSTOR to change the host PKRU value.

While at it, move pkru state save/restore to common code and the
host_pkru field to kvm_vcpu_arch.  This will let SVM support protection keys.

Cc: stable@vger.kernel.org
Reported-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <158932794619.44260.14508381096663848853.stgit@naples-babu.amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-05-13 11:27:41 -04:00
..
boot SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
configs compiler: remove CONFIG_OPTIMIZE_INLINING entirely 2020-04-07 10:43:42 -07:00
crypto x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 2020-04-09 00:12:48 +09:00
entry sparc,x86: vdso: remove meaningless undefining CONFIG_OPTIMIZE_INLINING 2020-04-07 10:43:42 -07:00
events perf/x86/intel/uncore: Add Ice Lake server uncore support 2020-04-08 11:33:46 +02:00
hyperv x86/Hyper-V: Report crash data in die() when panic_on_oops is set 2020-04-11 17:19:07 +01:00
ia32 Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-31 11:04:05 -07:00
include KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c 2020-05-13 11:27:41 -04:00
kernel A set of fixes for x86 and objtool: 2020-04-19 11:58:32 -07:00
kvm KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c 2020-05-13 11:27:41 -04:00
lib SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
math-emu Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
mm mm/memory_hotplug: add pgprot_t to mhp_params 2020-04-10 15:36:21 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
oprofile x86: Use pr_warn instead of pr_warning 2019-10-18 15:00:18 +02:00
pci pci-v5.6-changes 2020-01-31 14:48:54 -08:00
platform efi/x86: Don't remap text<->rodata gap read-only for mixed mode 2020-04-14 08:32:17 +02:00
power x86/kernel: Convert to new CPU match macros 2020-03-24 21:28:26 +01:00
purgatory Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
ras RAS/CEC: Add CONFIG_RAS_CEC_DEBUG and move CEC debug features there 2019-06-08 17:39:24 +02:00
realmode SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
tools .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
um mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS 2020-04-10 15:36:21 -07:00
video treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
xen xen: branch for v5.7-rc1b 2020-04-10 17:20:06 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
Kconfig Kbuild updates for v5.7 (2nd) 2020-04-11 09:46:12 -07:00
Kconfig.assembler x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 2020-04-09 00:12:48 +09:00
Kconfig.cpu x86/cpu: Detect VMX features on Intel, Centaur and Zhaoxin CPUs 2020-01-13 18:02:53 +01:00
Kconfig.debug x86: mm: convert dump_pagetables to use walk_page_range 2020-02-04 03:05:25 +00:00
Makefile x86: probe assembler capabilities via kconfig instead of makefile 2020-04-09 00:01:59 +09:00
Makefile_32.cpu x86/math-emu: Limit MATH_EMULATION to 486SX compatibles 2019-10-03 10:51:17 +02:00
Makefile.um