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powerpc/mm/book3s64/radix: Off-load TLB invalidations to host when !GTSE

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When platform doesn't support GTSE, let TLB invalidation requests
for radix guests be off-loaded to the host using H_RPT_INVALIDATE
hcall.

	[hcall wrapper, error path handling and renames]

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200703053608.12884-4-bharata@linux.ibm.com
This commit is contained in:
Nicholas Piggin
2020-07-03 11:06:08 +05:30
committed by Michael Ellerman
parent b6c8417507
commit dd3d9aa558
4 changed files with 175 additions and 8 deletions
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34
arch/powerpc/include/asm/hvcall.h
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@@ -305,7 +305,8 @@
#define H_SCM_UNBIND_ALL 0x3FC
#define H_SCM_HEALTH 0x400
#define H_SCM_PERFORMANCE_STATS 0x418
#define MAX_HCALL_OPCODE H_SCM_PERFORMANCE_STATS
#define H_RPT_INVALIDATE 0x448
#define MAX_HCALL_OPCODE H_RPT_INVALIDATE
/* Scope args for H_SCM_UNBIND_ALL */
#define H_UNBIND_SCOPE_ALL (0x1)
@@ -389,6 +390,37 @@
#define PROC_TABLE_RADIX 0x04
#define PROC_TABLE_GTSE 0x01
/*
* Defines for
* H_RPT_INVALIDATE - Invalidate RPT translation lookaside information.
*/
/* Type of translation to invalidate (type) */
#define H_RPTI_TYPE_NESTED 0x0001 /* Invalidate nested guest partition-scope */
#define H_RPTI_TYPE_TLB 0x0002 /* Invalidate TLB */
#define H_RPTI_TYPE_PWC 0x0004 /* Invalidate Page Walk Cache */
/* Invalidate Process Table Entries if H_RPTI_TYPE_NESTED is clear */
#define H_RPTI_TYPE_PRT 0x0008
/* Invalidate Partition Table Entries if H_RPTI_TYPE_NESTED is set */
#define H_RPTI_TYPE_PAT 0x0008
#define H_RPTI_TYPE_ALL (H_RPTI_TYPE_TLB | H_RPTI_TYPE_PWC | \
H_RPTI_TYPE_PRT)
#define H_RPTI_TYPE_NESTED_ALL (H_RPTI_TYPE_TLB | H_RPTI_TYPE_PWC | \
H_RPTI_TYPE_PAT)
/* Invalidation targets (target) */
#define H_RPTI_TARGET_CMMU 0x01 /* All virtual processors in the partition */
#define H_RPTI_TARGET_CMMU_LOCAL 0x02 /* Current virtual processor */
/* All nest/accelerator agents in use by the partition */
#define H_RPTI_TARGET_NMMU 0x04
/* Page size mask (page sizes) */
#define H_RPTI_PAGE_4K 0x01
#define H_RPTI_PAGE_64K 0x02
#define H_RPTI_PAGE_2M 0x04
#define H_RPTI_PAGE_1G 0x08
#define H_RPTI_PAGE_ALL (-1UL)
#ifndef __ASSEMBLY__
#include <linux/types.h>