mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-11 18:53:50 -04:00
Code Issues Packages Projects Releases Wiki Activity

RDMA/rxe: Remove 32-bit architecture support

Browse Source 
Major linux distibutions have phased out support for 32-bit machines. Since
rxe is primarily used for development and testing, the benefit of
maintaining 32-bit support is minimal. This change simplifies ATOMIC WRITE
implementations and improves maintainability of the driver.

Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Link: https://patch.msgid.link/20250421025101.3588139-1-matsuda-daisuke@fujitsu.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Daisuke Matsuda
2025-04-21 11:51:01 +09:00
committed by Leon Romanovsky
parent d85080df12
commit 23ea3c70ee
5 changed files with 3 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/sw/rxe/Kconfig
View File

@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config RDMA_RXE
tristate "Software RDMA over Ethernet (RoCE) driver"
depends on INET && PCI && INFINIBAND
depends on INET && PCI && INFINIBAND && 64BIT
depends on INFINIBAND_VIRT_DMA
select NET_UDP_TUNNEL
select CRC32

6
drivers/infiniband/sw/rxe/rxe_loc.h
View File

@@ -196,6 +196,7 @@ enum resp_states rxe_odp_atomic_op(struct rxe_mr *mr, u64 iova, int opcode,
u64 compare, u64 swap_add, u64 *orig_val);
int rxe_odp_flush_pmem_iova(struct rxe_mr *mr, u64 iova,
unsigned int length);
enum resp_states rxe_odp_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value);
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
static inline int
rxe_odp_mr_init_user(struct rxe_dev *rxe, u64 start, u64 length, u64 iova,
@@ -219,11 +220,6 @@ static inline int rxe_odp_flush_pmem_iova(struct rxe_mr *mr, u64 iova,
{
return -EOPNOTSUPP;
}
#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
enum resp_states rxe_odp_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value);
#else
static inline enum resp_states rxe_odp_do_atomic_write(struct rxe_mr *mr,
u64 iova, u64 value)
{

8
drivers/infiniband/sw/rxe/rxe_mr.c
View File

@@ -539,8 +539,6 @@ enum resp_states rxe_mr_do_atomic_op(struct rxe_mr *mr, u64 iova, int opcode,
return RESPST_NONE;
}
#if defined CONFIG_64BIT
/* only implemented or called for 64 bit architectures */
enum resp_states rxe_mr_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value)
{
unsigned int page_offset;
@@ -580,12 +578,6 @@ enum resp_states rxe_mr_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value)
return RESPST_NONE;
}
#else
enum resp_states rxe_mr_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value)
{
return RESPST_ERR_UNSUPPORTED_OPCODE;
}
#endif
int advance_dma_data(struct rxe_dma_info *dma, unsigned int length)
{

1
drivers/infiniband/sw/rxe/rxe_odp.c
View File

@@ -380,7 +380,6 @@ int rxe_odp_flush_pmem_iova(struct rxe_mr *mr, u64 iova,
return 0;
}
/* CONFIG_64BIT=y */
enum resp_states rxe_odp_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value)
{
struct ib_umem_odp *umem_odp = to_ib_umem_odp(mr->umem);

5
drivers/infiniband/sw/rxe/rxe_param.h
View File

@@ -53,12 +53,9 @@ enum rxe_device_param {
| IB_DEVICE_MEM_WINDOW
| IB_DEVICE_FLUSH_GLOBAL
| IB_DEVICE_FLUSH_PERSISTENT
#ifdef CONFIG_64BIT
| IB_DEVICE_MEM_WINDOW_TYPE_2B
| IB_DEVICE_ATOMIC_WRITE,
#else
| IB_DEVICE_MEM_WINDOW_TYPE_2B,
#endif /* CONFIG_64BIT */
RXE_MAX_SGE = 32,
RXE_MAX_WQE_SIZE = sizeof(struct rxe_send_wqe) +
sizeof(struct ib_sge) * RXE_MAX_SGE,