Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-26 14:12:06 +00:00
Code Issues Packages Projects Releases Wiki Activity
6827738dc6
linux/drivers/dma
History
Nikhil Rao 6827738dc6 dmaengine: idxd: add a write() method for applications to submit work 
After the patch to restrict the use of mmap() to CAP_SYS_RAWIO for
the currently existing devices, most applications can no longer make
use of the accelerators as in production "you don't run things as root".

To keep the DSA and IAA accelerators usable, hook up a write() method
so that applications can still submit work. In the write method,
sufficient input validation is performed to avoid the security issue
that required the mmap CAP_SYS_RAWIO check.

One complication is that the DSA device allows for indirect ("batched")
descriptors. There is no reasonable way to do the input validation
on these indirect descriptors so the write() method will not allow these
to be submitted to the hardware on affected hardware, and the sysfs
enumeration of support for the opcode is also removed.

Early performance data shows that the performance delta for most common
cases is within the noise.

Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2024-05-13 14:07:45 +00:00
..
bestcomm dmaengine: bestcomm: Code cleanup for bcom_sram_init 2024-01-30 22:11:56 +05:30
dw dmaengine: dw: platform: Convert to platform remove callback returning void 2023-09-28 13:10:47 +05:30
dw-axi-dmac dmaengine: dw-axi-dmac: Add support DMAX_NUM_CHANNELS > 16 2023-10-16 16:38:10 +05:30
dw-edma dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup 2024-02-07 09:30:52 +01:00
fsl-dpaa2-qdma dmaengine: fsl-dpaa2-qdma: Fix the size of dma pools 2024-01-22 16:05:05 +05:30
hsu dmaengine: hsu: Include headers we are direct user of 2022-09-04 22:49:35 +05:30
idxd dmaengine: idxd: add a write() method for applications to submit work 2024-05-13 14:07:45 +00:00
ioat dmaengine: ioatdma: use pci_dev_id() to simplify the code 2023-08-21 18:39:25 +05:30
lgm dmaengine: lgm: Use builtin_platform_driver macro to simplify the code 2023-08-21 11:13:09 +05:30
mediatek dmaengine updates for v6.7 2023-11-03 18:56:51 -10:00
ppc4xx dmaengine: ppc4xx: adma: Convert to platform remove callback returning void 2023-09-28 13:10:52 +05:30
ptdma dmaengine: ptdma: use consistent DMA masks 2024-02-23 12:22:55 +05:30
qcom irqchip: Convert all platform MSI users to the new API 2024-02-15 17:55:40 +01:00
sf-pdma dmaengine: sf-pdma: add mpfs-pdma compatible name 2023-12-11 16:33:22 +05:30
sh dmaengine: shdma: increase size of 'dev_id' 2024-01-19 18:12:10 +05:30
ti dmaengine updates for v6.9 2024-03-15 12:25:13 -07:00
xilinx dmaengine: xilinx: xdma: Clarify kdoc in XDMA driver 2024-04-07 17:08:45 +05:30
acpi-dma.c dmaengine: acpi: Check for errors from acpi_register_gsi() separately 2021-08-06 21:48:11 +05:30
altera-msgdma.c dmaengine: altera-msgdma: Convert to platform remove callback returning void 2023-09-28 13:10:45 +05:30
amba-pl08x.c dmaengine: pl08x: constify pointer to char in filter function 2024-02-23 12:44:08 +05:30
apple-admac.c dmaengine: apple-admac: Keep upper bits of REG_BUS_WIDTH 2023-11-24 18:57:56 +05:30
at_hdmac.c dmaengine: at_hdmac: add missing kernel-doc style description 2024-02-02 17:16:55 +01:00
at_xdmac.c dmaengine: at_xdmac: Convert to platform remove callback returning void 2023-09-28 13:10:45 +05:30
bcm2835-dma.c dmaengine: bcm2835-dma: Convert to platform remove callback returning void 2023-09-28 13:10:46 +05:30
bcm-sba-raid.c dmaengine: bcm-sba-raid: Convert to platform remove callback returning void 2023-09-28 13:10:46 +05:30
dma-axi-dmac.c dmaengine: axi-dmac: Improve cyclic DMA transfers in SG mode 2023-12-21 21:39:56 +05:30
dma-jz4780.c dmaengine: dma-jz4780: Convert to platform remove callback returning void 2023-09-28 13:10:47 +05:30
dmaengine.c dmaengine: fix NULL pointer in channel unregistration function 2023-12-21 21:44:29 +05:30
dmaengine.h dmaengine: dmaengine_desc_callback_valid(): Check for callback_result 2021-10-25 09:42:56 +05:30
dmatest.c dmaengine: dmatest: prevent using swiotlb buffer with nobounce parameter 2023-12-11 20:15:27 +05:30
ep93xx_dma.c dmaengine: ep93xx_dma: Annotate struct ep93xx_dma_engine with __counted_by 2023-10-04 15:12:57 +05:30
fsl_raid.c dmaengine: fsl_raid: Convert to platform remove callback returning void 2023-09-28 13:10:48 +05:30
fsl_raid.h
fsl-edma-common.c dmaengine updates for v6.9 2024-03-15 12:25:13 -07:00
fsl-edma-common.h dmaengine updates for v6.9 2024-03-15 12:25:13 -07:00
fsl-edma-main.c dmaengine updates for v6.9 2024-03-15 12:25:13 -07:00
fsl-qdma.c dmaengine: fsl-qdma: add __iomem and struct in union to fix sparse warning 2024-02-23 12:20:39 +05:30
fsldma.c dmaengine: fsldma: Convert to platform remove callback returning void 2023-09-28 13:10:48 +05:30
fsldma.h fsldma: fix very broken 32-bit ppc ioread64 functionality 2020-08-29 13:50:56 -07:00
hisi_dma.c dmaengine: hisilicon: Annotate struct hisi_dma_dev with __counted_by 2023-09-28 16:42:14 +05:30
idma64.c idma64: Don't try to serve interrupts when device is powered off 2024-03-28 12:41:58 +05:30
idma64.h
img-mdc-dma.c dmaengine: img-mdc-dma: Convert to platform remove callback returning void 2023-09-28 13:10:48 +05:30
imx-dma.c dmaengine: imx-dma: Convert to platform remove callback returning void 2023-09-28 13:10:49 +05:30
imx-sdma.c dmaengine: imx-sdma: fix Excess kernel-doc warnings 2024-01-19 17:05:04 +05:30
k3dma.c dmaengine: Drop unnecessary of_match_device() calls 2023-10-09 10:55:16 +05:30
Kconfig dmaengine: tegra210-adma: Update dependency to ARCH_TEGRA 2024-01-22 16:38:11 +05:30
lpc18xx-dmamux.c dmaengine: Explicitly include correct DT includes 2023-08-01 23:51:27 +05:30
ls2x-apb-dma.c dmaengine: ls2x-apb: New driver for the Loongson LS2X APB DMA controller 2023-12-21 21:35:13 +05:30
Makefile dmaengine: ls2x-apb: New driver for the Loongson LS2X APB DMA controller 2023-12-21 21:35:13 +05:30
mcf-edma-main.c dmaengine: mcf-edma: utilize edma_write_tcdreg() macro for TCD Access 2024-02-07 09:40:17 +01:00
milbeaut-hdmac.c dmaengine: milbeaut-hdmac: Convert to platform remove callback returning void 2023-11-24 18:32:30 +05:30
milbeaut-xdmac.c dmaengine: milbeaut-xdmac: Convert to platform remove callback returning void 2023-11-24 18:32:30 +05:30
mmp_pdma.c dmaengine: Drop unnecessary of_match_device() calls 2023-10-09 10:55:16 +05:30
mmp_tdma.c dmaengine: mmp_tdma: drop unused variable 'of_id' 2023-10-10 23:30:52 +05:30
moxart-dma.c dmaengine: moxart-dma: Annotate struct moxart_desc with __counted_by 2023-09-28 16:42:14 +05:30
mpc512x_dma.c dmaengine: mpc512x_dma: Convert to platform remove callback returning void 2023-09-28 13:10:51 +05:30
mv_xor_v2.c irqchip: Convert all platform MSI users to the new API 2024-02-15 17:55:40 +01:00
mv_xor.c dmaengine: Use device_get_match_data() 2023-10-09 10:54:48 +05:30
mv_xor.h
mxs-dma.c dmaengine: Explicitly include correct DT includes 2023-08-01 23:51:27 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Convert to platform remove callback returning void 2023-09-28 13:10:52 +05:30
of-dma.c dmaengine: of: constify of_phandle_args in of_dma_find_controller() 2024-02-23 12:44:08 +05:30
owl-dma.c dmaengine: owl: fix register access functions 2024-03-28 12:29:36 +05:30
pch_dma.c dmaengine: pch_dma: Remove usage of the deprecated "pci-dma-compat.h" API 2022-01-08 22:16:44 +05:30
pl330.c dmaengine: Revert "dmaengine: pl330: issue_pending waits until WFP state" 2024-03-28 12:28:00 +05:30
plx_dma.c dmaengine: plx_dma: Don't set chancnt 2023-05-24 12:24:32 +05:30
pxa_dma.c dmaengine: Drop unnecessary of_match_device() calls 2023-10-09 10:55:16 +05:30
sa11x0-dma.c dmaengine: sa11x0: Annotate struct sa11x0_dma_desc with __counted_by 2023-09-28 16:42:14 +05:30
sprd-dma.c dmaengine: sprd: delete redundant parameter for dma driver function 2023-10-02 21:28:33 +05:30
st_fdma.c dmaengine: Use device_get_match_data() 2023-10-09 10:54:48 +05:30
st_fdma.h dmaengine: st_fdma: Annotate struct st_fdma_desc with __counted_by 2023-09-28 16:42:14 +05:30
ste_dma40_ll.c dmaengine: ste_dma40: Remove platform data 2023-05-16 23:00:19 +05:30
ste_dma40_ll.h
ste_dma40.c dmaengine: std_dma40: fix kernel-doc warnings and spelling 2023-12-21 21:31:30 +05:30
ste_dma40.h dmaengine: ste_dma40: Remove platform data 2023-05-16 23:00:19 +05:30
stm32-dma.c dmaengine: stm32-dma: avoid bitfield overflow assertion 2023-11-24 18:28:25 +05:30
stm32-dmamux.c dmaengine: Explicitly include correct DT includes 2023-08-01 23:51:27 +05:30
stm32-mdma.c dmaengine updates for v6.7 2023-11-03 18:56:51 -10:00
sun4i-dma.c dmaengine: sun4i-dma: Convert to platform remove callback returning void 2023-09-28 13:10:55 +05:30
sun6i-dma.c dmaengine: sun6i-dma: Convert to platform remove callback returning void 2023-09-28 13:10:56 +05:30
tegra20-apb-dma.c dmaengine: tegra20-apb-dma: Convert to platform remove callback returning void 2023-09-28 13:10:56 +05:30
tegra186-gpc-dma.c dmaengine: tegra186: Fix residual calculation 2024-03-28 12:31:42 +05:30
tegra210-adma.c dmaengine: tegra210-adma: Support dma-channel-mask property 2023-12-11 17:44:18 +05:30
timb_dma.c dmaengine: timb_dma: Convert to platform remove callback returning void 2023-09-28 13:10:58 +05:30
TODO
txx9dmac.c dmaengine: txx9dmac: Convert to platform remove callback returning void 2023-09-28 13:10:58 +05:30
txx9dmac.h
uniphier-mdmac.c dmaengine: uniphier-mdmac: Convert to platform remove callback returning void 2023-11-24 18:32:30 +05:30
uniphier-xdmac.c dmaengine: uniphier-xdmac: Convert to platform remove callback returning void 2023-11-24 18:32:30 +05:30
virt-dma.c dmaengine: virt-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
virt-dma.h
xgene-dma.c dmaengine: xgene-dma: Convert to platform remove callback returning void 2023-09-28 13:10:58 +05:30