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ANDROID: KVM: arm64: Use 32-bit function ID for PSCI MEM_PROTECT call

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The PSCI specification defines only a 32-bit function ID for the
MEM_PROTECT call used to protect against cold reboot attacks.

Fix the pKVM hypervisor invocation of MEM_PROTECT to use the 32-bit
function ID instead of the unallocated 64-bit flavour.

Bug: 260316363
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I675a57419064f7f006960ca5370e9dc2d5279a90
This commit is contained in:
Will Deacon
2022-11-24 11:38:28 +00:00
parent 3a954f97ee
commit 5853a069e0
2 changed files with 2 additions and 3 deletions
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3
include/uapi/linux/psci.h
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@@ -51,12 +51,11 @@
#define PSCI_1_0_FN_SYSTEM_SUSPEND PSCI_0_2_FN(14)
#define PSCI_1_0_FN_SET_SUSPEND_MODE PSCI_0_2_FN(15)
#define PSCI_1_1_FN_SYSTEM_RESET2 PSCI_0_2_FN(18)
#define PSCI_1_1_FN_MEM_PROTECT PSCI_0_2_FN(19)
#define PSCI_1_0_FN64_SYSTEM_SUSPEND PSCI_0_2_FN64(14)
#define PSCI_1_1_FN64_SYSTEM_RESET2 PSCI_0_2_FN64(18)
#define PSCI_1_1_FN64_MEM_PROTECT PSCI_0_2_FN64(19)
/* PSCI v0.2 power state encoding for CPU_SUSPEND function */
#define PSCI_0_2_POWER_STATE_ID_MASK 0xffff
#define PSCI_0_2_POWER_STATE_ID_SHIFT 0