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arm64: record register state at kernel mode page fault (for eclair)

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Change-Id: I066bceecc0377110faaca0b21d45a476d000e684
This commit is contained in:
Balazs Gerofi
2020-08-12 07:43:45 +09:00
committed by Masamichi Takagi
parent 92902d36fc
commit 623d6f8bc3
3 changed files with 7 additions and 0 deletions
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5
arch/arm64/kernel/cpu.c
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@ -143,6 +143,11 @@ void arch_save_panic_regs(void *irq_regs)
clv = get_arm64_this_cpu_local();
/* If kernel mode PF occurred, unroll the causing call stack */
if (cpu_local_var(kernel_mode_pf_regs)) {
regs = cpu_local_var(kernel_mode_pf_regs);
}
/* For user-space, use saved kernel context */
if (regs->pc < USER_END) {
memset(clv->arm64_cpu_local_thread.panic_regs,