From 958e46acc8e900e8569dd467c1af9b8d2d019394 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:54 +0000
Subject: [PATCH] disable cpu isolcpus
---
kernel/arch/powerpc/include/asm/lppaca.h | 67 ++++++++++++---------------------
1 files changed, 25 insertions(+), 42 deletions(-)
diff --git a/kernel/arch/powerpc/include/asm/lppaca.h b/kernel/arch/powerpc/include/asm/lppaca.h
index 7c23ce8..c390ec3 100644
--- a/kernel/arch/powerpc/include/asm/lppaca.h
+++ b/kernel/arch/powerpc/include/asm/lppaca.h
@@ -1,23 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* lppaca.h
* Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _ASM_POWERPC_LPPACA_H
#define _ASM_POWERPC_LPPACA_H
+
+/*
+ * The below VPHN macros are outside the __KERNEL__ check since these are
+ * used for compiling the vphn selftest in userspace
+ */
+
+/* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */
+#define VPHN_REGISTER_COUNT 6
+
+/*
+ * 6 64-bit registers unpacked into up to 24 be32 associativity values. To
+ * form the complete property we have to add the length in the first cell.
+ */
+#define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1)
+
+/*
+ * The H_HOME_NODE_ASSOCIATIVITY hcall takes two values for flags:
+ * 1 for retrieving associativity information for a guest cpu
+ * 2 for retrieving associativity information for a host/hypervisor cpu
+ */
+#define VPHN_FLAG_VCPU 1
+#define VPHN_FLAG_PCPU 2
+
#ifdef __KERNEL__
/*
@@ -135,34 +145,7 @@
} save_area[SLB_NUM_BOLTED];
} ____cacheline_aligned;
-/*
- * Layout of entries in the hypervisor's dispatch trace log buffer.
- */
-struct dtl_entry {
- u8 dispatch_reason;
- u8 preempt_reason;
- __be16 processor_id;
- __be32 enqueue_to_dispatch_time;
- __be32 ready_to_enqueue_time;
- __be32 waiting_to_ready_time;
- __be64 timebase;
- __be64 fault_addr;
- __be64 srr0;
- __be64 srr1;
-};
-
-#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */
-#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))
-
-extern struct kmem_cache *dtl_cache;
-
-/*
- * When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE = y, the cpu accounting code controls
- * reading from the dispatch trace log. If other code wants to consume
- * DTL entries, it can set this pointer to a function that will get
- * called once for each DTL entry that gets processed.
- */
-extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index);
+extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);
#endif /* CONFIG_PPC_BOOK3S */
#endif /* __KERNEL__ */
--
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