mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 12:42:02 +00:00
72674d4800
- Reset MXCSR in kernel_fpu_begin() to prevent using a stale user space
value.
- Prevent writing MSR_TEST_CTRL on CPUs which are not explicitly
whitelisted for split lock detection. Some CPUs which do not support
it crash even when the MSR is written to 0 which is the default value.
- Fix the XEN PV fallout of the entry code rework
- Fix the 32bit fallout of the entry code rework
- Add more selftests to ensure that these entry problems don't come back.
- Disable 16 bit segments on XEN PV. It's not supported because XEN PV
does not implement ESPFIX64
-----BEGIN PGP SIGNATURE-----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=lI9c
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2020-07-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A series of fixes for x86:
- Reset MXCSR in kernel_fpu_begin() to prevent using a stale user
space value.
- Prevent writing MSR_TEST_CTRL on CPUs which are not explicitly
whitelisted for split lock detection. Some CPUs which do not
support it crash even when the MSR is written to 0 which is the
default value.
- Fix the XEN PV fallout of the entry code rework
- Fix the 32bit fallout of the entry code rework
- Add more selftests to ensure that these entry problems don't come
back.
- Disable 16 bit segments on XEN PV. It's not supported because XEN
PV does not implement ESPFIX64"
* tag 'x86-urgent-2020-07-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ldt: Disable 16-bit segments on Xen PV
x86/entry/32: Fix #MC and #DB wiring on x86_32
x86/entry/xen: Route #DB correctly on Xen PV
x86/entry, selftests: Further improve user entry sanity checks
x86/entry/compat: Clear RAX high bits on Xen PV SYSENTER
selftests/x86: Consolidate and fix get/set_eflags() helpers
selftests/x86/syscall_nt: Clear weird flags after each test
selftests/x86/syscall_nt: Add more flag combinations
x86/entry/64/compat: Fix Xen PV SYSENTER frame setup
x86/entry: Move SYSENTER's regs->sp and regs->flags fixups into C
x86/entry: Assert that syscalls are on the right stack
x86/split_lock: Don't write MSR_TEST_CTRL on CPUs that aren't whitelisted
x86/fpu: Reset MXCSR to default in kernel_fpu_begin()
|
||
|---|---|---|
| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| cgroup | ||
| debugging | ||
| edid | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| io_uring | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| nfsd | ||
| objtool | ||
| pci | ||
| pcmcia | ||
| perf | ||
| power | ||
| scripts | ||
| spi | ||
| testing | ||
| thermal/tmon | ||
| time | ||
| usb | ||
| virtio | ||
| vm | ||
| wmi | ||
| Makefile | ||