mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
139a1d2842
When Ultravisor (UV) is enabled, the partition table is stored in secure memory and can only be accessed via the UV. The Hypervisor (HV) however maintains a copy of the partition table in normal memory to allow Nest MMU translations to occur (for normal VMs). The HV copy includes partition table entries (PATE)s for secure VMs which would currently be unused (Nest MMU translations cannot access secure memory) but they would be needed as we add functionality. This patch adds the UV_WRITE_PATE ucall which is used to update the PATE for a VM (both normal and secure) when Ultravisor is enabled. Signed-off-by: Michael Anderson <andmike@linux.ibm.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> [ cclaudio: Write the PATE in HV's table before doing that in UV's ] Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com> Reviewed-by: Ryan Grimm <grimm@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190822034838.27876-5-cclaudio@linux.ibm.com
29 lines
591 B
C
29 lines
591 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Ultravisor API.
|
|
*
|
|
* Copyright 2019, IBM Corporation.
|
|
*
|
|
*/
|
|
#ifndef _ASM_POWERPC_ULTRAVISOR_API_H
|
|
#define _ASM_POWERPC_ULTRAVISOR_API_H
|
|
|
|
#include <asm/hvcall.h>
|
|
|
|
/* Return codes */
|
|
#define U_BUSY H_BUSY
|
|
#define U_FUNCTION H_FUNCTION
|
|
#define U_NOT_AVAILABLE H_NOT_AVAILABLE
|
|
#define U_P2 H_P2
|
|
#define U_P3 H_P3
|
|
#define U_P4 H_P4
|
|
#define U_P5 H_P5
|
|
#define U_PARAMETER H_PARAMETER
|
|
#define U_PERMISSION H_PERMISSION
|
|
#define U_SUCCESS H_SUCCESS
|
|
|
|
/* opcodes */
|
|
#define UV_WRITE_PATE 0xF104
|
|
|
|
#endif /* _ASM_POWERPC_ULTRAVISOR_API_H */
|