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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /include/soc/qcom/cmd-db.h | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'include/soc/qcom/cmd-db.h')
| -rw-r--r-- | include/soc/qcom/cmd-db.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/soc/qcom/cmd-db.h b/include/soc/qcom/cmd-db.h new file mode 100644 index 000000000..47a6cab75 --- /dev/null +++ b/include/soc/qcom/cmd-db.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef __QCOM_COMMAND_DB_H__ +#define __QCOM_COMMAND_DB_H__ + +#include <linux/err.h> + +enum cmd_db_hw_type { + CMD_DB_HW_INVALID = 0, + CMD_DB_HW_MIN = 3, + CMD_DB_HW_ARC = CMD_DB_HW_MIN, + CMD_DB_HW_VRM = 4, + CMD_DB_HW_BCM = 5, + CMD_DB_HW_MAX = CMD_DB_HW_BCM, + CMD_DB_HW_ALL = 0xff, +}; + +#if IS_ENABLED(CONFIG_QCOM_COMMAND_DB) +u32 cmd_db_read_addr(const char *resource_id); + +const void *cmd_db_read_aux_data(const char *resource_id, size_t *len); + +bool cmd_db_match_resource_addr(u32 addr1, u32 addr2); + +enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id); + +int cmd_db_ready(void); +#else +static inline u32 cmd_db_read_addr(const char *resource_id) +{ return 0; } + +static inline const void *cmd_db_read_aux_data(const char *resource_id, size_t *len) +{ return ERR_PTR(-ENODEV); } + +static inline bool cmd_db_match_resource_addr(u32 addr1, u32 addr2) +{ return false; } + +static inline enum cmd_db_hw_type cmd_db_read_slave_id(const char *resource_id) +{ return -ENODEV; } + +static inline int cmd_db_ready(void) +{ return -ENODEV; } +#endif /* CONFIG_QCOM_COMMAND_DB */ +#endif /* __QCOM_COMMAND_DB_H__ */ |