change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/powerpc/kvm/emulate.c
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@@ -1,16 +1,5 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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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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  * Copyright IBM Corp. 2007
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  * Copyright 2011 Freescale Semiconductor, Inc.
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..
@@ -61,11 +50,10 @@
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50
 
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 	dec_time = vcpu->arch.dec;
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 	/*
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-	 * Guest timebase ticks at the same frequency as host decrementer.
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-	 * So use the host decrementer calculations for decrementer emulation.
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+	 * Guest timebase ticks at the same frequency as host timebase.
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+	 * So use the host timebase calculations for decrementer emulation.
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 	 */
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-	dec_time = dec_time << decrementer_clockevent.shift;
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-	do_div(dec_time, decrementer_clockevent.mult);
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+	dec_time = tb_to_ns(dec_time);
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 	dec_nsec = do_div(dec_time, NSEC_PER_SEC);
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 	hrtimer_start(&vcpu->arch.dec_timer,
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 		ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL);
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@@ -203,7 +191,7 @@
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 /* XXX Should probably auto-generate instruction decoding for a particular core
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  * from opcode tables in the future. */
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-int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
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+int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu)
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 {
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 	u32 inst;
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 	int rs, rt, sprn;
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@@ -282,8 +270,9 @@
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 		 * these are illegal instructions.
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 		 */
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 		if (inst == KVMPPC_INST_SW_BREAKPOINT) {
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-			run->exit_reason = KVM_EXIT_DEBUG;
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-			run->debug.arch.address = kvmppc_get_pc(vcpu);
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+			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
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+			vcpu->run->debug.arch.status = 0;
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+			vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
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 			emulated = EMULATE_EXIT_USER;
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 			advance = 0;
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 		} else
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@@ -296,7 +285,7 @@
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 	}
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 	if (emulated == EMULATE_FAIL) {
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-		emulated = vcpu->kvm->arch.kvm_ops->emulate_op(run, vcpu, inst,
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+		emulated = vcpu->kvm->arch.kvm_ops->emulate_op(vcpu, inst,
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 							       &advance);
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 		if (emulated == EMULATE_AGAIN) {
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 			advance = 0;