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2021-02-12net: hns3: refactor out hclge_rm_vport_all_mac_table()Hao Chen
hclge_rm_vport_all_mac_table() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Hao Chen <chenhao288@hisilicon.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclgevf_set_rss_tuple()Huazhong Tan
To make it more readable and maintainable, split hclgevf_set_rss_tuple() into two parts. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclge_set_rss_tuple()Huazhong Tan
To make it more readable and maintainable, split hclge_set_rss_tuple() into two parts. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: split out hclgevf_cmd_send()Yufeng Mo
hclgevf_cmd_send() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: split out hclge_cmd_send()Yufeng Mo
hclge_cmd_send() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: split out hclge_dbg_dump_qos_buf_cfg()Jian Shen
hclge_dbg_dump_qos_buf_cfg() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclgevf_get_rss_tuple()Jian Shen
To improve code readability and maintainability, separate the flow type parsing part and the converting part from bloated hclgevf_get_rss_tuple(). Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclge_get_rss_tuple()Jian Shen
To improve code readability and maintainability, separate the flow type parsing part and the converting part from bloated hclge_get_rss_tuple(). Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclge_set_vf_vlan_common()Peng Li
To improve code readability and maintainability, separate the command handling part and the status parsing part from bloated hclge_set_vf_vlan_common(). Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: use ipv6_addr_any() helperJiaran Zhang
Use common ipv6_addr_any() to determine if an addr is ipv6 any addr. Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: clean up hns3_dbg_cmd_write()Peng Li
As more commands are added, hns3_dbg_cmd_write() is going to get more bloated, so move the part about command check into a separate function. Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclgevf_cmd_convert_err_code()Peng Li
To improve code readability and maintainability, refactor hclgevf_cmd_convert_err_code() with an array of imp_errcode and common_errno mapping, instead of a bloated switch/case. Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12net: hns3: refactor out hclge_cmd_convert_err_code()Peng Li
To improve code readability and maintainability, refactor hclge_cmd_convert_err_code() with an array of imp_errcode and common_errno mapping, instead of a bloated switch/case. Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-12tools/resolve_btfids: Add /libbpf to .gitignoreStanislav Fomichev
This is what I see after compiling the kernel: # bpf-next...bpf-next/master ?? tools/bpf/resolve_btfids/libbpf/ Fixes: fc6b48f692f8 ("tools/resolve_btfids: Build libbpf and libsubcmd in separate directories") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210212010053.668700-1-sdf@google.com
2021-02-12Merge branch 'introduce bpf_iter for task_vma'Alexei Starovoitov
Song Liu says: ==================== This set introduces bpf_iter for task_vma, which can be used to generate information similar to /proc/pid/maps. Patch 4/4 adds an example that mimics /proc/pid/maps. Current /proc/<pid>/maps and /proc/<pid>/smaps provide information of vma's of a process. However, these information are not flexible enough to cover all use cases. For example, if a vma cover mixed 2MB pages and 4kB pages (x86_64), there is no easy way to tell which address ranges are backed by 2MB pages. task_vma solves the problem by enabling the user to generate customize information based on the vma (and vma->vm_mm, vma->vm_file, etc.). Changes v6 => v7: 1. Let BPF iter program use bpf_d_path without specifying sleepable. (Alexei) Changes v5 => v6: 1. Add more comments for task_vma_seq_get_next() to explain the logic of find_vma() calls. (Alexei) 2. Skip vma found by find_vma() when both vm_start and vm_end matches prev_vm_[start|end]. Previous versions only compares vm_start. IOW, if vma of [4k, 8k] is replaced by [4k, 12k] after relocking mmap_lock, v5 will skip the new vma, while v6 will process it. Changes v4 => v5: 1. Fix a refcount leak on task_struct. (Yonghong) 2. Fix the selftest. (Yonghong) Changes v3 => v4: 1. Avoid skipping vma by assigning invalid prev_vm_start in task_vma_seq_stop(). (Yonghong) 2. Move "again" label in task_vma_seq_get_next() save a check. (Yonghong) Changes v2 => v3: 1. Rewrite 1/4 so that we hold mmap_lock while calling BPF program. This enables the BPF program to access the real vma with BTF. (Alexei) 2. Fix the logic when the control is returned to user space. (Yonghong) 3. Revise commit log and cover letter. (Yonghong) Changes v1 => v2: 1. Small fixes in task_iter.c and the selftests. (Yonghong) ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-02-12selftests/bpf: Add test for bpf_iter_task_vmaSong Liu
The test dumps information similar to /proc/pid/maps. The first line of the output is compared against the /proc file to make sure they match. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210212183107.50963-4-songliubraving@fb.com
2021-02-12bpf: Allow bpf_d_path in bpf_iter programSong Liu
task_file and task_vma iter programs have access to file->f_path. Enable bpf_d_path to print paths of these file. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210212183107.50963-3-songliubraving@fb.com
2021-02-12bpf: Introduce task_vma bpf_iterSong Liu
Introduce task_vma bpf_iter to print memory information of a process. It can be used to print customized information similar to /proc/<pid>/maps. Current /proc/<pid>/maps and /proc/<pid>/smaps provide information of vma's of a process. However, these information are not flexible enough to cover all use cases. For example, if a vma cover mixed 2MB pages and 4kB pages (x86_64), there is no easy way to tell which address ranges are backed by 2MB pages. task_vma solves the problem by enabling the user to generate customize information based on the vma (and vma->vm_mm, vma->vm_file, etc.). To access the vma safely in the BPF program, task_vma iterator holds target mmap_lock while calling the BPF program. If the mmap_lock is contended, task_vma unlocks mmap_lock between iterations to unblock the writer(s). This lock contention avoidance mechanism is similar to the one used in show_smaps_rollup(). Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210212183107.50963-2-songliubraving@fb.com
2021-02-12bpf: selftests: Add non function pointer test to struct_opsMartin KaFai Lau
This patch adds a "void *owner" member. The existing bpf_tcp_ca test will ensure the bpf_cubic.o and bpf_dctcp.o can be loaded. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210212021037.267278-1-kafai@fb.com
2021-02-12libbpf: Ignore non function pointer member in struct_opsMartin KaFai Lau
When libbpf initializes the kernel's struct_ops in "bpf_map__init_kern_struct_ops()", it enforces all pointer types must be a function pointer and rejects others. It turns out to be too strict. For example, when directly using "struct tcp_congestion_ops" from vmlinux.h, it has a "struct module *owner" member and it is set to NULL in a bpf_tcp_cc.o. Instead, it only needs to ensure the member is a function pointer if it has been set (relocated) to a bpf-prog. This patch moves the "btf_is_func_proto(kern_mtype)" check after the existing "if (!prog) { continue; }". The original debug message in "if (!prog) { continue; }" is also removed since it is no longer valid. Beside, there is a later debug message to tell which function pointer is set. The "btf_is_func_proto(mtype)" has already been guaranteed in "bpf_object__collect_st_ops_relos()" which has been run before "bpf_map__init_kern_struct_ops()". Thus, this check is removed. v2: - Remove outdated debug message (Andrii) Remove because there is a later debug message to tell which function pointer is set. - Following mtype->type is no longer needed. Remove: "skip_mods_and_typedefs(btf, mtype->type, &mtype_id)" - Do "if (!prog)" test before skip_mods_and_typedefs. Fixes: 590a00888250 ("bpf: libbpf: Add STRUCT_OPS support") Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210212021030.266932-1-kafai@fb.com
2021-02-12Merge tag 'io_uring-5.11-2021-02-12' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull io_uring fix from Jens Axboe: "Revert of a patch from this release that caused a regression" * tag 'io_uring-5.11-2021-02-12' of git://git.kernel.dk/linux-block: Revert "io_uring: don't take fs for recvmsg/sendmsg"
2021-02-12libbpf: Use AF_LOCAL instead of AF_INET in xsk.cStanislav Fomichev
We have the environments where usage of AF_INET is prohibited (cgroup/sock_create returns EPERM for AF_INET). Let's use AF_LOCAL instead of AF_INET, it should perfectly work with SIOCETHTOOL. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Björn Töpel <bjorn.topel@intel.com> Acked-by: Björn Töpel <bjorn.topel@intel.com> Link: https://lore.kernel.org/bpf/20210209221826.922940-1-sdf@google.com
2021-02-12Merge tag 'drm-fixes-2021-02-12' of git://anongit.freedesktop.org/drm/drmLinus Torvalds
Pull drm fixes from Dave Airlie: "Regular fixes for final, there is a ttm regression fix, dp-mst fix, one amdgpu revert, two i915 fixes, and some misc fixes for sun4i, xlnx, and vc4. All pretty quiet and don't think we have any known outstanding regressions. ttm: - page pool regression fix. dp_mst: - don't report un-attached ports as connected amdgpu: - blank screen fix i915: - ensure Type-C FIA is powered when initializing - fix overlay frontbuffer tracking sun4i: - tcon1 sync polarity fix - always set HDMI clock rate - fix H6 HDMI PHY config - fix H6 max frequency vc4: - fix buffer overflow xlnx: - fix memory leak" * tag 'drm-fixes-2021-02-12' of git://anongit.freedesktop.org/drm/drm: drm/ttm: make sure pool pages are cleared drm/sun4i: dw-hdmi: Fix max. frequency for H6 drm/sun4i: Fix H6 HDMI PHY configuration drm/sun4i: dw-hdmi: always set clock rate drm/sun4i: tcon: set sync polarity for tcon1 channel drm/i915: Fix overlay frontbuffer tracking Revert "drm/amd/display: Update NV1x SR latency values" drm/i915/tgl+: Make sure TypeC FIA is powered up when initializing it drm/dp_mst: Don't report ports connected if nothing is attached to them drm/xlnx: fix kmemleak by sending vblank_event in atomic_disable drm/vc4: hvs: Fix buffer overflow with the dlist handling
2021-02-12Merge tag 'trace-v5.11-rc7-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fix from Steven Rostedt: "Fix buffer overflow in trace event filter. It was reported that if an trace event was larger than a page and was filtered, that it caused memory corruption. The reason is that filtered events first go into a buffer to test the filter before being written into the ring buffer. Unfortunately, this write did not check the size" * tag 'trace-v5.11-rc7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Check length before giving out the filter buffer
2021-02-12Merge tag 'for-linus-5.11-rc8-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fix from Juergen Gross: "A single fix for an issue introduced this development cycle: when running as a Xen guest on Arm systems the kernel will hang during boot" * tag 'for-linus-5.11-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: arm/xen: Don't probe xenbus as part of an early initcall
2021-02-12Merge tag 'riscv-for-linus-5.11-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fix from Palmer Dabbelt: "A single fix this week: the removal of the GPIO reset method for the Ethernet phy on the HiFive Unleashed. This returns to relying on the bootloader's phy reset sequence, which we'll have to continue doing until we can sort out how to get the Linux phy driver to perform the special reset dance required for this phy" * tag 'riscv-for-linus-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: Revert "dts: phy: add GPIO number and active state used for phy reset"
2021-02-12Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fix from Catalin Marinas: "Fix PTRACE_PEEKMTETAGS access to an mmapped region before the first write" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mte: Allow PTRACE_PEEKMTETAGS access to the zero page
2021-02-12ixgbe: store the result of ixgbe_rx_offset() onto ixgbe_ringMaciej Fijalkowski
Output of ixgbe_rx_offset() is based on ethtool's priv flag setting, which when changed, causes PF reset (disables napi, frees irqs, loads different Rx mem model, etc.). This means that within napi its result is constant and there is no reason to call it per each processed frame. Add new 'rx_offset' field to ixgbe_ring that is meant to hold the ixgbe_rx_offset() result and use it within ixgbe_clean_rx_irq(). Furthermore, use it within ixgbe_alloc_mapped_page(). Last but not least, un-inline the function of interest as it lives in .c file so let compiler do the decision about the inlining. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12ice: store the result of ice_rx_offset() onto ice_ringMaciej Fijalkowski
Output of ice_rx_offset() is based on ethtool's priv flag setting, which when changed, causes PF reset (disables napi, frees irqs, loads different Rx mem model, etc.). This means that within napi its result is constant and there is no reason to call it per each processed frame. Add new 'rx_offset' field to ice_ring that is meant to hold the ice_rx_offset() result and use it within ice_clean_rx_irq(). Furthermore, use it within ice_alloc_mapped_page(). Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12i40e: store the result of i40e_rx_offset() onto i40e_ringMaciej Fijalkowski
Output of i40e_rx_offset() is based on ethtool's priv flag setting, which when changed, causes PF reset (disables napi, frees irqs, loads different Rx mem model, etc.). This means that within napi its result is constant and there is no reason to call it per each processed frame. Add new 'rx_offset' field to i40e_ring that is meant to hold the i40e_rx_offset() result and use it within i40e_clean_rx_irq(). Furthermore, use it within i40e_alloc_mapped_page(). Last but not least, un-inline the function of interest so that compiler makes the decision about inlining as it lives in .c file. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12i40e: Simplify the do-while allocation loopBjörn Töpel
Fold the count decrement into the while-statement. Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12ice: skip NULL check against XDP prog in ZC pathMaciej Fijalkowski
Whole zero-copy variant of clean Rx IRQ is executed when xsk_pool is attached to rx_ring and it can happen only when XDP program is present on interface. Therefore it is safe to assume that program is always !NULL and there is no need for checking it in ice_run_xdp_zc. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12ice: remove redundant checks in ice_change_mtuMaciej Fijalkowski
dev_validate_mtu checks that mtu value specified by user is not less than min mtu and not greater than max allowed mtu. It is being done before calling the ndo_change_mtu exposed by driver, so remove these redundant checks in ice_change_mtu. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12ice: move skb pointer from rx_buf to rx_ringMaciej Fijalkowski
Similar thing has been done in i40e, as there is no real need for having the sk_buff pointer in each rx_buf. Non-eop frames can be simply handled on that pointer moved upwards to rx_ring. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12ice: simplify ice_run_xdpMaciej Fijalkowski
There's no need for 'result' variable, we can directly return the internal status based on action returned by xdp prog. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12i40e: adjust i40e_is_non_eopMaciej Fijalkowski
i40e_is_non_eop had a leftover comment and unused skb argument which was used for placing the skb onto rx_buf in case when current buffer was non-eop one. This is not relevant anymore as commit e72e56597ba1 ("i40e/i40evf: Moves skb from i40e_rx_buffer to i40e_ring") pulled the non-complete skb handling out of rx_bufs up to rx_ring. Therefore, let's adjust the function arguments that i40e_is_non_eop takes. Furthermore, since there is already a function responsible for bumping the ntc, make use of that and drop that logic from i40e_is_non_eop so that the scope of this function is limited to what the name actually states. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12i40e: drop misleading function commentsMaciej Fijalkowski
i40e_cleanup_headers has a statement about check against skb being linear or not which is not relevant anymore, so let's remove it. Same case for i40e_can_reuse_rx_page, it references things that are not present there anymore. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12i40e: drop redundant check when setting xdp progMaciej Fijalkowski
Net core handles the case where netdev has no xdp prog attached and current prog is NULL. Therefore, remove such check within i40e_xdp_setup. Reviewed-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-02-12MAINTAINERS: cpuidle: exynos: include header in file patternKrzysztof Kozlowski
Include the platform data header in Exynos cpuidle maintainer entry. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12arm64: mte: Allow PTRACE_PEEKMTETAGS access to the zero pageCatalin Marinas
The ptrace(PTRACE_PEEKMTETAGS) implementation checks whether the user page has valid tags (mapped with PROT_MTE) by testing the PG_mte_tagged page flag. If this bit is cleared, ptrace(PTRACE_PEEKMTETAGS) returns -EIO. A newly created (PROT_MTE) mapping points to the zero page which had its tags zeroed during cpu_enable_mte(). If there were no prior writes to this mapping, ptrace(PTRACE_PEEKMTETAGS) fails with -EIO since the zero page does not have the PG_mte_tagged flag set. Set PG_mte_tagged on the zero page when its tags are cleared during boot. In addition, to avoid ptrace(PTRACE_PEEKMTETAGS) succeeding on !PROT_MTE mappings pointing to the zero page, change the __access_remote_tags() check to (vm_flags & VM_MTE) instead of PG_mte_tagged. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Fixes: 34bfeea4a9e9 ("arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE") Cc: <stable@vger.kernel.org> # 5.10.x Cc: Will Deacon <will@kernel.org> Reported-by: Luis Machado <luis.machado@linaro.org> Tested-by: Luis Machado <luis.machado@linaro.org> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20210210180316.23654-1-catalin.marinas@arm.com
2021-02-12powercap: intel_rapl: Use topology interface in rapl_init_domains()Yunfeng Ye
It's not a good idea to access the phys_proc_id of cpuinfo directly. Use topology_physical_package_id(cpu) instead. Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12powercap: intel_rapl: Use topology interface in rapl_add_package()Yunfeng Ye
It's not a good idea to access phys_proc_id and cpu_die_id directly. Use topology_physical_package_id(cpu) and topology_die_id(cpu) instead. Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12PM: sleep: Constify static struct attribute_groupRikard Falkeborn
The only usage of suspend_attr_group is to put its address in an array of pointers to const attribute_group structs. Make it const to allow the compiler to put it into read-only memory. Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12PM: Kconfig: remove unneeded "default n" optionsLukasz Luba
Remove "default n" options. If the "default" line is removed, it defaults to 'n'. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12PM: EM: update Kconfig description and drop "default n" optionLukasz Luba
Energy Model supports now other devices like GPUs, DSPs, not only CPUs. Thus, update the description in the config option. Remove also unneeded "default n". If the "default" line is removed, it defaults to 'n'. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-12dt-bindings: usb: mediatek: musb: add mt8516 compatbileChunfeng Yun
Add support mt8516 compatbile Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20210201070016.41721-8-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-12dt-bindings: usb: mtk-xhci: add compatible for mt2701 and mt7623Chunfeng Yun
Add two compatible for mt2701 and mt7623; Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20210201070016.41721-7-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-12dt-bindings: usb: mtk-xhci: add optional assigned clock propertiesChunfeng Yun
Add optional property "assigned-clock" and "assigned-clock-parents" used by mt7629. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20210201070016.41721-6-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-12Documentation: connector: Update the description of sink-vdosKyle Tso
Remove the acronym "VDM" and replace it with the full name "Vendor Defined Message". Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Kyle Tso <kyletso@google.com> Link: https://lore.kernel.org/r/20210212073743.665038-1-kyletso@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-12ACPI: property: Satisfy kernel doc validator (part 2)Andy Shevchenko
CHECK drivers/acpi/property.c warning: Function parameter or member '__fwnode' not described in 'acpi_graph_get_remote_endpoint' warning: Excess function parameter 'fwnode' description in 'acpi_graph_get_remote_endpoint' warning: Excess function parameter 'endpoint' description in 'acpi_graph_get_remote_endpoint' Fixes: 0ef7478639c5 ("ACPI: property: Make the ACPI graph API private") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
generated by cgit (git 2.34.1) at 2025-09-12 03:56:45 +0000