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Extend mt7925_mcu_sta_he_6g_tlv with the per-link STA configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_sta_eht_tlv with the per-link STA configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_sta_rate_ctrl_tlv with the per-link STA configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_sta_state_v2_tlv with the per-link STA configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_sta_update with the per-link STA configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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make mt7925_mcu_set_chctx rely on mt7925_mcu_bss_rlm_tlv to get rid of
the redundant code.
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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add mt7925_mcu_bss_rlm_tlv to maintain consistency with the other TLVs that
constitute the command for creating the per-link BSS.
Co-developed-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_uni_bss_ps with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_uni_bss_bcnft with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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The channel context has to be bound with the per-link BSS, thus,
we extend mt7925_mcu_[abort, set]_roc to work with the per-link BSS
configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_set_bss_pm with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_basic_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_sec_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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remove unused parameters in mt7925_mcu_bss_bmc_tlv
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_bmc_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_mld_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_qos_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_he_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_color_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_bss_ifs_tlv with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_set_timing with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_add_bss_info with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Deren Wu <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt7925_mcu_set_tx with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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Extend mt76_connac_mcu_uni_add_dev with per-link BSS configuration.
The patch we created is a prerequisite to enable the MLO function in the
driver. It is purely a refactoring patch so the functionality should
remain unchanged.
We also extend link_idx field in mt76_connac_bss_basic_tlv for the firmware
to able to identify the link index in the MLO mode that is not harmful
for the current non-MLO mode.
Signed-off-by: Sean Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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The .bss_info_changed method is being split into .vif_cfg_changed and
.link_info_changed to support MLD devices, but it will still support
non-MLD devices.
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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We are introducing a new structure, mt792x_chanctx, to quickly identify
the linked BSS it is working on. This eliminates the need to search in
mt7921_ctx_iter() or mt7925_ctx_iter() when the channel context changes.
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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We are introducing a new structure, mt792x_link_sta, to manage per-link
configurations in preparation for future station (STA) support of
Multi-Link Operation (MLO).
This patch only includes structural changes and does not involve any
logic changes.
We have moved relevant parameters, such as the wcid from the mt76_wcid
structure, from the mt7921x_sta structure to the mt792x_link_sta structure.
For current drivers that do not support MLO, there is only one link STA,
and link information is accessed via the deflink member.
However, we have not yet created the per-link BSS configuration indexed
by link ID for Multi-Link Device (MLD) support in mt7921x_sta.
This step needs to be completed before adding MLD support for STA mode.
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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We are introducing a new structure, mt792x_bss_conf, to manage per-link
configurations in preparation for future STA support of Multi-Link
Operation (MLO).
The patch does not include any logic changes, only structural changes.
We have moved relevant parameters from the mt7921x_vif structure such
as to mt76 of mt76_vif structure, rssi and Tx queue parameters to
mt7921x_bss_conf structure. We can access those members to configure the
BSS for this interface, whether it is our own BSS or the one we are
associated with.
However, we have not yet created the per-link BSS configuration indexed by
link ID for Multi-Link Device (MLD) support. This step needs to be
extended before adding MLD support for AP mode.
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Deren Wu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
A few more Qualcomm driver updates for v6.11
This adds a quirk to skip using the newly introduced SHM Bridge
implementation while regressions are being investigated.
One occurance of return no_free_ptr() is replaced with return_ptr() to
make code easier to read. llcc, mdt_loader, ocmem, pdr, socinfo and
wcnss drivers gets simplified using cleanup.h.
* tag 'qcom-drivers-for-6.11-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
firmware: qcom: tzmem: blacklist more platforms for SHM Bridge
soc: qcom: wcnss: simplify with cleanup.h
soc: qcom: pdr: simplify with cleanup.h
soc: qcom: ocmem: simplify with cleanup.h
soc: qcom: mdt_loader: simplify with cleanup.h
soc: qcom: llcc: simplify with cleanup.h
firmware: qcom: tzmem: simplify returning pointer without cleanup
soc: qcom: socinfo: Add PM6350 PMIC
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into clk-qcom
Pull more qcom clk driver updates from Bjorn Andersson:
- Introduces helper logic to expose clock controllers as simple
interconnect providers
- Use the interconnect helper above on Qualcomm ipq9574
- Add CLK_SET_RATE_PARENT to the remaining USB pipe clocks on Qualcomm
X1Elite.
- Improve error handling in Qualcomm kpss-xcc driver
- Mark Qualcomm SC8280XP LPASS clock controller regmap_config const
* tag 'qcom-clk-for-6.11-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
clk: qcom: ipq9574: Use icc-clk for enabling NoC related clocks
clk: qcom: common: Add interconnect clocks support
interconnect: icc-clk: Add devm_icc_clk_register
interconnect: icc-clk: Specify master/slave ids
dt-bindings: clock: qcom: Add AHB clock for SM8150
clk: qcom: gcc-x1e80100: Set parent rate for USB3 sec and tert PHY pipe clks
dt-bindings: interconnect: Add Qualcomm IPQ9574 support
clk: qcom: kpss-xcc: Return of_clk_add_hw_provider to transfer the error
clk: qcom: lpasscc-sc8280xp: Constify struct regmap_config
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Add new member to struct intel_dp to cache support of Adaptive Sync
SDP capabilities and use it whenever required to avoid HW access
to read capability during each atomic commit.
-v2:
- Squash both the patches
Signed-off-by: Mitul Golani <[email protected]>
Reviewed-by: Arun R Murthy <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Rodrigo Vivi <[email protected]>
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get_ckpt_valid_blocks() checks valid ckpt blocks in current section.
It counts all vblocks from the first to the last segment in the
large section. However, START_SEGNO() is used to get the first segno
in an SIT block. This patch fixes that to get the correct start segno.
Fixes: 61461fc921b7 ("f2fs: fix to avoid touching checkpointed data in get_victim()")
Signed-off-by: Sheng Yong <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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Commit 61df7b828204 ("lsm: fixup the inode xattr capability handling")
moved the responsibility of doing the inode xattr capability checking
out of the individual LSMs and into the LSM framework itself.
Unfortunately, while the original commit added the capability checks
to both the setxattr and removexattr code in the LSM framework, it
only removed the setxattr capability checks from the individual LSMs,
leaving duplicated removexattr capability checks in both the SELinux
and Smack code.
This patch removes the duplicated code from SELinux and Smack.
Fixes: 61df7b828204 ("lsm: fixup the inode xattr capability handling")
Acked-by: Casey Schaufler <[email protected]>
Signed-off-by: Paul Moore <[email protected]>
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Add missing dependency on NET_SWITCHDEV.
Fixes: abd5576b9c57 ("net: ti: icssg-prueth: Add support for ICSSG switch firmware")
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: Guillaume La Roque <[email protected]>
Reviewed-by: MD Danish Anwar <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Add ptimer-handle property to link to ptp-timer node handle.
Fix below warning:
arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dtb: fman@1a00000: 'ptimer-handle' do not match any of the regexes: '^ethernet@[a-f0-9]+$', '^mdio@[a-f0-9]+$', '^muram@[a-f0-9]+$', '^phc@[a-f0-9]+$', '^port@[a-f0-9]+$', 'pinctrl-[0-9]+'
Reviewed-by: Rob Herring (Arm) <[email protected]>
Signed-off-by: Frank Li <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Add dma-coherent property to fix below warning.
arch/arm64/boot/dts/freescale/fsl-ls1046a-rdb.dtb: fman@1a00000: 'dma-coherent', 'ptimer-handle' do not match any of the regexes: '^ethernet@[a-f0-9]+$', '^mdio@[a-f0-9]+$', '^muram@[a-f0-9]+$', '^phc@[a-f0-9]+$', '^port@[a-f0-9]+$', 'pinctrl-[0-9]+'
from schema $id: http://devicetree.org/schemas/net/fsl,fman.yaml#
Reviewed-by: Rob Herring (Arm) <[email protected]>
Signed-off-by: Frank Li <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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X would not start in my old 32-bit partition (and the "n"-handling looks
just as wrong on 64-bit, but for whatever reason did not show up there):
"n" must be accumulated over all pages before it's added to "offset" and
compared with "copy", immediately after the skb_frag_foreach_page() loop.
Fixes: d2d30a376d9c ("net: allow skb_datagram_iter to be called from any context")
Signed-off-by: Hugh Dickins <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Pass union tls_crypto_context pointer, rather than struct
tls_crypto_info pointer, to memzero_explicit().
The address of the pointer is the same before and after.
But the new construct means that the size of the dereferenced pointer type
matches the size being zeroed. Which aids static analysis.
As reported by Smatch:
.../tls_main.c:842 do_tls_setsockopt_conf() error: memzero_explicit() 'crypto_info' too small (4 vs 56)
No functional change intended.
Compile tested only.
Reviewed-by: Przemek Kitszel <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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PWR_CLK_STATE only needs to be modified up until gen11. For gen12 this
code is not applicable. Remove code to update context image with
PWR_CLK_STATE for gen12.
Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL")
Signed-off-by: Umesh Nerlige Ramappa <[email protected]>
Reviewed-by: Ashutosh Dixit <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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The ageing time used by the test is too short for debug kernels and
results in entries being aged out prematurely [1].
Fix by increasing the ageing time.
The same change was done for the VLAN-aware version of the test in
commit dfbab74044be ("selftests: forwarding: Make vxlan-bridge-1q pass
on debug kernels").
[1]
# ./vxlan_bridge_1d.sh
[...]
# TEST: VXLAN: flood before learning [ OK ]
# TEST: VXLAN: show learned FDB entry [ OK ]
# TEST: VXLAN: learned FDB entry [FAIL]
# veth3: Expected to capture 0 packets, got 4.
# RTNETLINK answers: No such file or directory
# TEST: VXLAN: deletion of learned FDB entry [ OK ]
# TEST: VXLAN: Ageing of learned FDB entry [FAIL]
# veth3: Expected to capture 0 packets, got 2.
[...]
Signed-off-by: Ido Schimmel <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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In cdv_intel_lvds_get_modes(), the return value of drm_mode_duplicate()
is assigned to mode, which will lead to a NULL pointer dereference on
failure of drm_mode_duplicate(). Add a check to avoid npd.
Cc: [email protected]
Fixes: 6a227d5fd6c4 ("gma500: Add support for Cedarview")
Signed-off-by: Ma Ke <[email protected]>
Signed-off-by: Patrik Jakobsson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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In psb_intel_lvds_get_modes(), the return value of drm_mode_duplicate() is
assigned to mode, which will lead to a possible NULL pointer dereference
on failure of drm_mode_duplicate(). Add a check to avoid npd.
Cc: [email protected]
Fixes: 89c78134cc54 ("gma500: Add Poulsbo support")
Signed-off-by: Ma Ke <[email protected]>
Signed-off-by: Patrik Jakobsson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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'struct kobj_type' is not modified in this driver. It is only used with
kobject_init_and_add() which takes a "const struct kobj_type *" parameter.
Constifying this structure moves some data to a read-only section, so
increase overall security.
On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
4082 792 8 4882 1312 drivers/block/rnbd/rnbd-srv-sysfs.o
After:
=====
text data bss dec hex filename
4210 672 8 4890 131a drivers/block/rnbd/rnbd-srv-sysfs.o
Signed-off-by: Christophe JAILLET <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Link: https://lore.kernel.org/r/e3d454173ffad30726c9351810d3aa7b75122711.1720462252.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jens Axboe <[email protected]>
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Lu Baolu says:
====================
This series implements the functionality of delivering IO page faults to
user space through the IOMMUFD framework. One feasible use case is the
nested translation. Nested translation is a hardware feature that supports
two-stage translation tables for IOMMU. The second-stage translation table
is managed by the host VMM, while the first-stage translation table is
owned by user space. This allows user space to control the IOMMU mappings
for its devices.
When an IO page fault occurs on the first-stage translation table, the
IOMMU hardware can deliver the page fault to user space through the
IOMMUFD framework. User space can then handle the page fault and respond
to the device top-down through the IOMMUFD. This allows user space to
implement its own IO page fault handling policies.
User space application that is capable of handling IO page faults should
allocate a fault object, and bind the fault object to any domain that it
is willing to handle the fault generatd for them. On a successful return
of fault object allocation, the user can retrieve and respond to page
faults by reading or writing to the file descriptor (FD) returned.
The iommu selftest framework has been updated to test the IO page fault
delivery and response functionality.
====================
* iommufd_pri:
iommufd/selftest: Add coverage for IOPF test
iommufd/selftest: Add IOPF support for mock device
iommufd: Associate fault object with iommufd_hw_pgtable
iommufd: Fault-capable hwpt attach/detach/replace
iommufd: Add iommufd fault object
iommufd: Add fault and response message definitions
iommu: Extend domain attach group with handle support
iommu: Add attach handle to struct iopf_group
iommu: Remove sva handle list
iommu: Introduce domain attachment handle
Link: https://lore.kernel.org/all/[email protected]
Signed-off-by: Jason Gunthorpe <[email protected]>
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The cp500 driver creates auxiliary devices. Kernel configs without
CONFIG_AUXILIARY_BUS lead to warnings like this:
cp500.c: undefined reference to `auxiliary_device_init'
cp500.c: undefined reference to `__auxiliary_device_add'
Add missing dependency to AUXILIARY_BUS to KEBA_CP500 Kconfig.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Fixes: a1944676767e ("misc: keba: Add basic KEBA CP500 system FPGA support")
Signed-off-by: Gerhard Engleder <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Extend the selftest tool to add coverage of testing IOPF handling. This
would include the following tests:
- Allocating and destroying an iommufd fault object.
- Allocating and destroying an IOPF-capable HWPT.
- Attaching/detaching/replacing an IOPF-capable HWPT on a device.
- Triggering an IOPF on the mock device.
- Retrieving and responding to the IOPF through the file interface.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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Extend the selftest mock device to support generating and responding to
an IOPF. Also add an ioctl interface to userspace applications to trigger
the IOPF on the mock device. This would allow userspace applications to
test the IOMMUFD's handling of IOPFs without having to rely on any real
hardware.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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When allocating a user iommufd_hw_pagetable, the user space is allowed to
associate a fault object with the hw_pagetable by specifying the fault
object ID in the page table allocation data and setting the
IOMMU_HWPT_FAULT_ID_VALID flag bit.
On a successful return of hwpt allocation, the user can retrieve and
respond to page faults by reading and writing the file interface of the
fault object.
Once a fault object has been associated with a hwpt, the hwpt is
iopf-capable, indicated by hwpt->fault is non NULL. Attaching,
detaching, or replacing an iopf-capable hwpt to an RID or PASID will
differ from those that are not iopf-capable.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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Add iopf-capable hw page table attach/detach/replace helpers. The pointer
to iommufd_device is stored in the domain attachment handle, so that it
can be echo'ed back in the iopf_group.
The iopf-capable hw page tables can only be attached to devices that
support the IOMMU_DEV_FEAT_IOPF feature. On the first attachment of an
iopf-capable hw_pagetable to the device, the IOPF feature is enabled on
the device. Similarly, after the last iopf-capable hwpt is detached from
the device, the IOPF feature is disabled on the device.
The current implementation allows a replacement between iopf-capable and
non-iopf-capable hw page tables. This matches the nested translation use
case, where a parent domain is attached by default and can then be
replaced with a nested user domain with iopf support.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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An iommufd fault object provides an interface for delivering I/O page
faults to user space. These objects are created and destroyed by user
space, and they can be associated with or dissociated from hardware page
table objects during page table allocation or destruction.
User space interacts with the fault object through a file interface. This
interface offers a straightforward and efficient way for user space to
handle page faults. It allows user space to read fault messages
sequentially and respond to them by writing to the same file. The file
interface supports reading messages in poll mode, so it's recommended that
user space applications use io_uring to enhance read and write efficiency.
A fault object can be associated with any iopf-capable iommufd_hw_pgtable
during the pgtable's allocation. All I/O page faults triggered by devices
when accessing the I/O addresses of an iommufd_hw_pgtable are routed
through the fault object to user space. Similarly, user space's responses
to these page faults are routed back to the iommu device driver through
the same fault object.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lu Baolu <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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