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Merge pull request #1892 from sandrine-bailleux-arm/sb/pauth 

Pointer authentication fixes
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Soby Mathew 2019-03-18 12:48:55 +00:00 committed by GitHub
parent 73050e6970 47102b35d6
commit cc6864927d
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2 changed files with 3 additions and 5 deletions
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2
lib/el3_runtime/aarch64/context.S
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@ -356,7 +356,7 @@ func pauth_context_restore
msr APIAKeyLo_EL1, x9 msr APIAKeyLo_EL1, x9
msr APIAKeyHi_EL1, x10 msr APIAKeyHi_EL1, x10
ldp x9, x10, [x11, #CTX_PACIAKEY_LO] ldp x9, x10, [x11, #CTX_PACIBKEY_LO]
msr APIBKeyLo_EL1, x9 msr APIBKeyLo_EL1, x9
msr APIBKeyHi_EL1, x10 msr APIBKeyHi_EL1, x10

6
plat/arm/common/aarch64/arm_pauth.c
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@ -9,11 +9,9 @@
/* /*
* Instruction pointer authentication key A. The low 64-bit are at [0], and the * Instruction pointer authentication key A. The low 64-bit are at [0], and the
* high bits at [1]. They are run-time constants so they are placed in the * high bits at [1].
* rodata section. They are written before MMU is turned on and the permissions
* are effective.
*/ */
uint64_t plat_apiakey[2] __section("rodata.apiakey"); uint64_t plat_apiakey[2];
/* /*
* This is only a toy implementation to generate a seemingly random 128-bit key * This is only a toy implementation to generate a seemingly random 128-bit key