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arm64: C/R PAC keys

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PAC stands for Pointer Authentication Code. Each process has 5 PAC keys
and a mask of enabled keys. All this properties have to be C/R-ed.

As they are per-process protperties, we can save/restore them just for
one thread.

Signed-off-by: Andrei Vagin <avagin@google.com>
This commit is contained in:
AV 2025-03-03 19:14:54 +00:00 • committed by Andrei Vagin
parent c5d46d86a8
commit 8ae5db37bb
31 changed files with 244 additions and 26 deletions
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23
images/core-aarch64.proto
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@ -17,9 +17,32 @@ message user_aarch64_fpsimd_context_entry {
required uint32 fpcr = 3;
}
message pac_address_keys {
required uint64 apiakey_lo = 1;
required uint64 apiakey_hi = 2;
required uint64 apibkey_lo = 3;
required uint64 apibkey_hi = 4;
required uint64 apdakey_lo = 5;
required uint64 apdakey_hi = 6;
required uint64 apdbkey_lo = 7;
required uint64 apdbkey_hi = 8;
required uint64 pac_enabled_key = 9;
}
message pac_generic_keys {
required uint64 apgakey_lo = 1;
required uint64 apgakey_hi = 2;
}
message pac_keys {
optional pac_address_keys pac_address_keys = 6;
optional pac_generic_keys pac_generic_keys = 7;
}
message thread_info_aarch64 {
required uint64 clear_tid_addr = 1[(criu).hex = true];
required uint64 tls = 2;
required user_aarch64_regs_entry gpregs = 3[(criu).hex = true];
required user_aarch64_fpsimd_context_entry fpsimd = 4;
optional pac_keys pac_keys = 5;
}