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732b32daef
Now that 40x platforms have gone, remove support for 40x in the core of powerpc arch. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240628121201.130802-4-mpe@ellerman.id.au
28 lines
561 B
C
28 lines
561 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* This file contains the routines for initializing kernel userspace protection
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*/
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/printk.h>
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#include <linux/smp.h>
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#include <asm/kup.h>
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#include <asm/smp.h>
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#ifdef CONFIG_PPC_KUAP
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void setup_kuap(bool disabled)
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{
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if (disabled) {
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if (smp_processor_id() == boot_cpuid)
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cur_cpu_spec->mmu_features &= ~MMU_FTR_KUAP;
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return;
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}
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pr_info("Activating Kernel Userspace Access Protection\n");
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prevent_user_access(KUAP_READ_WRITE);
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}
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#endif
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