Xiao Guangrong ran kvm-unit-tests on an actual machine with PKU and
found that it fails:
test pte.p pte.user pde.p pde.user pde.a pde.pse pkru.wd pkey=1 user write efer.nx cr4.pke: FAIL: error code 27 expected 7
Dump mapping: address: 0x123400000000
------L4: 2ebe007
------L3: 2ebf007
------L2: 8000000020000a5
(All failures are combinations of "pde.user pde.p pkru.wd pkey=1",
plus either "pde.pse" or "pte.p pte.user", plus one of "user cr0.wp",
"cr0.wp" or "user", plus unimportant bits such as accessed/dirty or
efer.nx).
So PFEC.PKEY is set even if the ordinary check failed (which it did
because pde.w is zero). Adjust QEMU to match behavior of silicon.
Backports commit 44d066a2f770ee9d61fd1c2a609bdf2a994dfdf7 from qemu
This includes XSAVE, XRSTOR, XGETBV, XSETBV, which are all related,
as well as the associate cpuid bits.
Backports commit 19dc85dba23c0db1ca932c62e453c37e00761628 from qemu
(pde & 0x1fe000) is a 32-bit integer; when shifting it
into bits 39-32 the result is zero. Fix it by making the
mask (and thus the result of the AND) a 64-bit integer.
Reported by Coverity.
Backports commit 388ee48a88e684e719660a2cae9c21897b94fa37 from qemu
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes.
Backports commit b6a0aa053711e27e1a7825c1fca662beb05bee6f from qemu
They are helpers for the ZMMReg fields, so name them accordingly.
This is just a global search+replace, no other changes are being
introduced.
Backports commit 19cbd87c14ab208858ee1233b790f37cfefed4b9 from qemu
x86_cpu_handle_mmu_fault is currently checking twice for writability
and executability of pages; the first time to decide whether to
trigger a page fault, the second time to compute the "prot" argument
to tlb_set_page_with_attrs.
Reorganize code so that first "prot" is computed, then it is used
to check whether to raise a page fault, then finally PROT_WRITE is
removed if the D bit will have to be set.
Backports commit 76c64d33601a4948d6f72022992574a75b6fab97 from qemu
These include page table walks, SVM accesses and SMM state save accesses.
The bulk of the patch is obtained with
sed -i 's/\(\<[a-z_]*_phys\(_notdirty\)\?\>(cs\)->as,/x86_\1,/'
Backports commit b216aa6c0fcbaa8ff4128969c14594896a5485a4 from qemu
