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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 /drivers/bcma/scan.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 'drivers/bcma/scan.h')
| -rw-r--r-- | drivers/bcma/scan.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/bcma/scan.h b/drivers/bcma/scan.h new file mode 100644 index 000000000..e53079a3d --- /dev/null +++ b/drivers/bcma/scan.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef BCMA_SCAN_H_ +#define BCMA_SCAN_H_ + +#define BCMA_ADDR_BASE 0x18000000 +#define BCMA_WRAP_BASE 0x18100000 + +#define SCAN_ER_VALID 0x00000001 +#define SCAN_ER_TAGX 0x00000006 /* we have to ignore 0x8 bit when checking tag for SCAN_ER_TAG_ADDR */ +#define SCAN_ER_TAG 0x0000000E +#define SCAN_ER_TAG_CI 0x00000000 +#define SCAN_ER_TAG_MP 0x00000002 +#define SCAN_ER_TAG_ADDR 0x00000004 +#define SCAN_ER_TAG_END 0x0000000E +#define SCAN_ER_BAD 0xFFFFFFFF + +#define SCAN_CIA_CLASS 0x000000F0 +#define SCAN_CIA_CLASS_SHIFT 4 +#define SCAN_CIA_ID 0x000FFF00 +#define SCAN_CIA_ID_SHIFT 8 +#define SCAN_CIA_MANUF 0xFFF00000 +#define SCAN_CIA_MANUF_SHIFT 20 + +#define SCAN_CIB_NMP 0x000001F0 +#define SCAN_CIB_NMP_SHIFT 4 +#define SCAN_CIB_NSP 0x00003E00 +#define SCAN_CIB_NSP_SHIFT 9 +#define SCAN_CIB_NMW 0x0007C000 +#define SCAN_CIB_NMW_SHIFT 14 +#define SCAN_CIB_NSW 0x00F80000 +#define SCAN_CIB_NSW_SHIFT 19 +#define SCAN_CIB_REV 0xFF000000 +#define SCAN_CIB_REV_SHIFT 24 + +#define SCAN_ADDR_AG32 0x00000008 +#define SCAN_ADDR_SZ 0x00000030 +#define SCAN_ADDR_SZ_SHIFT 4 +#define SCAN_ADDR_SZ_4K 0x00000000 +#define SCAN_ADDR_SZ_8K 0x00000010 +#define SCAN_ADDR_SZ_16K 0x00000020 +#define SCAN_ADDR_SZ_SZD 0x00000030 +#define SCAN_ADDR_TYPE 0x000000C0 +#define SCAN_ADDR_TYPE_SLAVE 0x00000000 +#define SCAN_ADDR_TYPE_BRIDGE 0x00000040 +#define SCAN_ADDR_TYPE_SWRAP 0x00000080 +#define SCAN_ADDR_TYPE_MWRAP 0x000000C0 +#define SCAN_ADDR_PORT 0x00000F00 +#define SCAN_ADDR_PORT_SHIFT 8 +#define SCAN_ADDR_ADDR 0xFFFFF000 + +#define SCAN_ADDR_SZ_BASE 0x00001000 /* 4KB */ + +#define SCAN_SIZE_SZ_ALIGN 0x00000FFF +#define SCAN_SIZE_SZ 0xFFFFF000 +#define SCAN_SIZE_SG32 0x00000008 + +#endif /* BCMA_SCAN_H_ */ |