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5790921bc1
Add the following CET instructions to the opcode map:
INCSSP:
Increment Shadow Stack pointer (SSP).
RDSSP:
Read SSP into a GPR.
SAVEPREVSSP:
Use "previous ssp" token at top of current Shadow Stack (SHSTK) to
create a "restore token" on the previous (outgoing) SHSTK.
RSTORSSP:
Restore from a "restore token" to SSP.
WRSS:
Write to kernel-mode SHSTK (kernel-mode instruction).
WRUSS:
Write to user-mode SHSTK (kernel-mode instruction).
SETSSBSY:
Verify the "supervisor token" pointed by MSR_IA32_PL0_SSP, set the
token busy, and set then Shadow Stack pointer(SSP) to the value of
MSR_IA32_PL0_SSP.
CLRSSBSY:
Verify the "supervisor token" and clear its busy bit.
ENDBR64/ENDBR32:
Mark a valid 64/32 bit control transfer endpoint.
Detailed information of CET instructions can be found in Intel Software
Developer's Manual.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20200204171425.28073-2-yu-cheng.yu@intel.com
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| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| cgroup | ||
| debugging | ||
| 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 | ||