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| author | Catalin Marinas <catalin.marinas@arm.com> | 2020-03-25 11:11:08 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-03-25 11:11:08 +0000 |
| commit | 44ca0e00b6a05ea9cf89d8a5290a225de19f4a2a (patch) | |
| tree | 781fad5d055110645a037e61fa9d28d53e51572c /arch/arm64/kernel/smp.c | |
| parent | 806dc825f01f1543f613b8195112ef06d04eb6d3 (diff) | |
| parent | 3b446c7d27ddd06342901bb35211363f6944291a (diff) | |
| download | linux-44ca0e00b6a05ea9cf89d8a5290a225de19f4a2a.tar.gz | |
Merge branch 'for-next/kernel-ptrauth' into for-next/core
* for-next/kernel-ptrauth:
: Return address signing - in-kernel support
arm64: Kconfig: verify binutils support for ARM64_PTR_AUTH
lkdtm: arm64: test kernel pointer authentication
arm64: compile the kernel with ptrauth return address signing
kconfig: Add support for 'as-option'
arm64: suspend: restore the kernel ptrauth keys
arm64: __show_regs: strip PAC from lr in printk
arm64: unwind: strip PAC from kernel addresses
arm64: mask PAC bits of __builtin_return_address
arm64: initialize ptrauth keys for kernel booting task
arm64: initialize and switch ptrauth kernel keys
arm64: enable ptrauth earlier
arm64: cpufeature: handle conflicts based on capability
arm64: cpufeature: Move cpu capability helpers inside C file
arm64: ptrauth: Add bootup/runtime flags for __cpu_setup
arm64: install user ptrauth keys at kernel exit time
arm64: rename ptrauth key structures to be user-specific
arm64: cpufeature: add pointer auth meta-capabilities
arm64: cpufeature: Fix meta-capability cpufeature check
Diffstat (limited to 'arch/arm64/kernel/smp.c')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 034806725598..fd4b2ec3ddd5 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -114,6 +114,10 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) */ secondary_data.task = idle; secondary_data.stack = task_stack_page(idle) + THREAD_SIZE; +#if defined(CONFIG_ARM64_PTR_AUTH) + secondary_data.ptrauth_key.apia.lo = idle->thread.keys_kernel.apia.lo; + secondary_data.ptrauth_key.apia.hi = idle->thread.keys_kernel.apia.hi; +#endif update_cpu_boot_status(CPU_MMU_OFF); __flush_dcache_area(&secondary_data, sizeof(secondary_data)); @@ -136,6 +140,10 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) pr_crit("CPU%u: failed to come online\n", cpu); secondary_data.task = NULL; secondary_data.stack = NULL; +#if defined(CONFIG_ARM64_PTR_AUTH) + secondary_data.ptrauth_key.apia.lo = 0; + secondary_data.ptrauth_key.apia.hi = 0; +#endif __flush_dcache_area(&secondary_data, sizeof(secondary_data)); status = READ_ONCE(secondary_data.status); if (status == CPU_MMU_OFF) |