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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e8c2d99f82
This patch adds support for running Cortex-A7 guests on Cortex-A7 hosts. As Cortex-A7 is architecturally compatible with A15, this patch is largely just generalising existing code. Areas where 'implementation defined' behaviour is identical for A7 and A15 is moved to allow it to be used by both cores. The check to ensure that coprocessor register tables are sorted correctly is also moved in to 'common' code to avoid each new cpu doing its own check (and possibly forgetting to do so!) Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/*
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* Copyright (C) 2012 - Virtual Open Systems and Columbia University
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* Authors: Rusty Russell <rusty@rustcorp.au>
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* Christoffer Dall <c.dall@virtualopensystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <linux/kvm_host.h>
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#include <asm/kvm_coproc.h>
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#include <asm/kvm_emulate.h>
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#include <linux/init.h>
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#include "coproc.h"
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/*
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* A15-specific CP15 registers.
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* CRn denotes the primary register number, but is copied to the CRm in the
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* user space API for 64-bit register access in line with the terminology used
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* in the ARM ARM.
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* Important: Must be sorted ascending by CRn, CRM, Op1, Op2 and with 64-bit
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* registers preceding 32-bit ones.
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*/
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static const struct coproc_reg a15_regs[] = {
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/* SCTLR: swapped by interrupt.S. */
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{ CRn( 1), CRm( 0), Op1( 0), Op2( 0), is32,
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NULL, reset_val, c1_SCTLR, 0x00C50078 },
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};
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static struct kvm_coproc_target_table a15_target_table = {
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.target = KVM_ARM_TARGET_CORTEX_A15,
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.table = a15_regs,
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.num = ARRAY_SIZE(a15_regs),
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};
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static int __init coproc_a15_init(void)
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{
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kvm_register_target_coproc_table(&a15_target_table);
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return 0;
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}
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late_initcall(coproc_a15_init);
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