mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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806381e1a2
- Fixes for several issues in the powernv PCI hotplug path - Fix htmldoc generation for htm.rst in toctree - Add jit support for load_acquire and store_release in ppc64 bpf jit Thanks to: Bjorn Helgaas, Hari Bathini, Puranjay Mohan, Saket Kumar Bhaskar, Shawn Anastasio, Timothy Pearson, Vishal Parmar -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEqX2DNAOgU8sBX3pRpnEsdPSHZJQFAmiQDOcACgkQpnEsdPSH ZJRqTBAAkpaZRrbzX6P1fjoTb89esIfY7YSymmXrgMwoF1fgTMzPSjg2Lzwzcjfb Ednlo8Hy+Ei2SDvctNaqtOcZuidn81AJN41aFIu44S/Mj1cde/cuBMKUTqx+ZBO0 gI4Bd4+V7yEv484PF7ZJga9K1VM85THCLgVWJ00VNHVHyvxgAuFiXdWmh6/qMUyi thvvLR+ANuAQz3S4VwbBg3AifDl6LXx2s5VB30xYxnPKzFNKZmnGXKwuOJH7rQe2 J8v99n0tcXW1tRGE4pVykzXg4EXL5zgWT9fJ5EZxbeXaW9sqMxi4VjO4jSsrSZ+K q2v362Dyjgygel9aC2rzN8Q+P5horX2QBR7knJJGa0VtztUiPWKR8za7vGLbzlcm rUvnTuoY1dwFB72Sy3amALalvWscssL/1sHazvRv65RcciW7/PZNVEiZ0xh1RKqb J8nWlb+iNBf2z12qLmS5DvUaveaZG1eyndLeD/knsEC49DEOoEy3t7QM1F7KscRR mYPsEpfjF/D0r+vzb6zl2ykwhJf/t7BNu7MdXH7xbIpj5iwtrhSUfvmx6g2MThzA Vee2QvQACscdop3W/6xgATH4xoq96v1XxMmCLnZ/HVl2PorxO27ad4EMNO4sBG8c 5agWHT7EnoUgwNF30DRtIHd7jNK/jt8++3kZx6CG9hdSboAM/pM= =tTms -----END PGP SIGNATURE----- Merge tag 'powerpc-6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Madhavan Srinivasan: - Fixes for several issues in the powernv PCI hotplug path - Fix htmldoc generation for htm.rst in toctree - Add jit support for load_acquire and store_release in ppc64 bpf jit Thanks to Bjorn Helgaas, Hari Bathini, Puranjay Mohan, Saket Kumar Bhaskar, Shawn Anastasio, Timothy Pearson, and Vishal Parmar * tag 'powerpc-6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc64/bpf: Add jit support for load_acquire and store_release docs: powerpc: add htm.rst to toctree PCI: pnv_php: Enable third attention indicator state PCI: pnv_php: Fix surprise plug detection and recovery powerpc/eeh: Make EEH driver device hotplug safe powerpc/eeh: Export eeh_unfreeze_pe() PCI: pnv_php: Work around switches with broken presence detection PCI: pnv_php: Clean up allocated IRQs on unplug
245 lines
11 KiB
C
245 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __BPF_MISC_H__
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#define __BPF_MISC_H__
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#define XSTR(s) STR(s)
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#define STR(s) #s
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/* Expand a macro and then stringize the expansion */
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#define QUOTE(str) #str
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#define EXPAND_QUOTE(str) QUOTE(str)
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/* This set of attributes controls behavior of the
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* test_loader.c:test_loader__run_subtests().
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*
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* The test_loader sequentially loads each program in a skeleton.
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* Programs could be loaded in privileged and unprivileged modes.
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* - __success, __failure, __msg, __regex imply privileged mode;
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* - __success_unpriv, __failure_unpriv, __msg_unpriv, __regex_unpriv
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* imply unprivileged mode.
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* If combination of privileged and unprivileged attributes is present
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* both modes are used. If none are present privileged mode is implied.
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*
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* See test_loader.c:drop_capabilities() for exact set of capabilities
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* that differ between privileged and unprivileged modes.
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*
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* For test filtering purposes the name of the program loaded in
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* unprivileged mode is derived from the usual program name by adding
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* `@unpriv' suffix.
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*
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* __msg Message expected to be found in the verifier log.
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* Multiple __msg attributes could be specified.
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* To match a regular expression use "{{" "}}" brackets,
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* e.g. "foo{{[0-9]+}}" matches strings like "foo007".
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* Extended POSIX regular expression syntax is allowed
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* inside the brackets.
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* __msg_unpriv Same as __msg but for unprivileged mode.
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*
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* __xlated Expect a line in a disassembly log after verifier applies rewrites.
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* Multiple __xlated attributes could be specified.
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* Regular expressions could be specified same way as in __msg.
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* __xlated_unpriv Same as __xlated but for unprivileged mode.
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*
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* __jited Match a line in a disassembly of the jited BPF program.
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* Has to be used after __arch_* macro.
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* For example:
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*
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* __arch_x86_64
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* __jited(" endbr64")
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* __jited(" nopl (%rax,%rax)")
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* __jited(" xorq %rax, %rax")
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* ...
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* __naked void some_test(void)
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* {
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* asm volatile (... ::: __clobber_all);
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* }
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*
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* Regular expressions could be included in patterns same way
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* as in __msg.
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*
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* By default assume that each pattern has to be matched on the
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* next consecutive line of disassembly, e.g.:
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*
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* __jited(" endbr64") # matched on line N
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* __jited(" nopl (%rax,%rax)") # matched on line N+1
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*
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* If match occurs on a wrong line an error is reported.
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* To override this behaviour use literal "...", e.g.:
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*
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* __jited(" endbr64") # matched on line N
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* __jited("...") # not matched
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* __jited(" nopl (%rax,%rax)") # matched on any line >= N
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*
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* __jited_unpriv Same as __jited but for unprivileged mode.
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*
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*
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* __success Expect program load success in privileged mode.
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* __success_unpriv Expect program load success in unprivileged mode.
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*
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* __failure Expect program load failure in privileged mode.
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* __failure_unpriv Expect program load failure in unprivileged mode.
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*
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* __retval Execute the program using BPF_PROG_TEST_RUN command,
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* expect return value to match passed parameter:
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* - a decimal number
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* - a hexadecimal number, when starts from 0x
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* - a macro which expands to one of the above
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* - literal _INT_MIN (expands to INT_MIN)
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* In addition, two special macros are defined below:
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* - POINTER_VALUE
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* - TEST_DATA_LEN
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* __retval_unpriv Same, but load program in unprivileged mode.
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*
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* __description Text to be used instead of a program name for display
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* and filtering purposes.
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*
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* __log_level Log level to use for the program, numeric value expected.
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*
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* __flag Adds one flag use for the program, the following values are valid:
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* - BPF_F_STRICT_ALIGNMENT;
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* - BPF_F_TEST_RND_HI32;
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* - BPF_F_TEST_STATE_FREQ;
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* - BPF_F_SLEEPABLE;
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* - BPF_F_XDP_HAS_FRAGS;
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* - A numeric value.
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* Multiple __flag attributes could be specified, the final flags
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* value is derived by applying binary "or" to all specified values.
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*
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* __auxiliary Annotated program is not a separate test, but used as auxiliary
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* for some other test cases and should always be loaded.
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* __auxiliary_unpriv Same, but load program in unprivileged mode.
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*
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* __arch_* Specify on which architecture the test case should be tested.
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* Several __arch_* annotations could be specified at once.
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* When test case is not run on current arch it is marked as skipped.
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* __caps_unpriv Specify the capabilities that should be set when running the test.
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*/
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#define __msg(msg) __attribute__((btf_decl_tag("comment:test_expect_msg=" XSTR(__COUNTER__) "=" msg)))
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#define __xlated(msg) __attribute__((btf_decl_tag("comment:test_expect_xlated=" XSTR(__COUNTER__) "=" msg)))
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#define __jited(msg) __attribute__((btf_decl_tag("comment:test_jited=" XSTR(__COUNTER__) "=" msg)))
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#define __failure __attribute__((btf_decl_tag("comment:test_expect_failure")))
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#define __success __attribute__((btf_decl_tag("comment:test_expect_success")))
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#define __description(desc) __attribute__((btf_decl_tag("comment:test_description=" desc)))
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#define __msg_unpriv(msg) __attribute__((btf_decl_tag("comment:test_expect_msg_unpriv=" XSTR(__COUNTER__) "=" msg)))
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#define __xlated_unpriv(msg) __attribute__((btf_decl_tag("comment:test_expect_xlated_unpriv=" XSTR(__COUNTER__) "=" msg)))
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#define __jited_unpriv(msg) __attribute__((btf_decl_tag("comment:test_jited=" XSTR(__COUNTER__) "=" msg)))
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#define __failure_unpriv __attribute__((btf_decl_tag("comment:test_expect_failure_unpriv")))
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#define __success_unpriv __attribute__((btf_decl_tag("comment:test_expect_success_unpriv")))
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#define __log_level(lvl) __attribute__((btf_decl_tag("comment:test_log_level="#lvl)))
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#define __flag(flag) __attribute__((btf_decl_tag("comment:test_prog_flags="#flag)))
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#define __retval(val) __attribute__((btf_decl_tag("comment:test_retval="XSTR(val))))
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#define __retval_unpriv(val) __attribute__((btf_decl_tag("comment:test_retval_unpriv="XSTR(val))))
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#define __auxiliary __attribute__((btf_decl_tag("comment:test_auxiliary")))
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#define __auxiliary_unpriv __attribute__((btf_decl_tag("comment:test_auxiliary_unpriv")))
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#define __btf_path(path) __attribute__((btf_decl_tag("comment:test_btf_path=" path)))
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#define __arch(arch) __attribute__((btf_decl_tag("comment:test_arch=" arch)))
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#define __arch_x86_64 __arch("X86_64")
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#define __arch_arm64 __arch("ARM64")
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#define __arch_riscv64 __arch("RISCV64")
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#define __caps_unpriv(caps) __attribute__((btf_decl_tag("comment:test_caps_unpriv=" EXPAND_QUOTE(caps))))
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#define __load_if_JITed() __attribute__((btf_decl_tag("comment:load_mode=jited")))
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#define __load_if_no_JITed() __attribute__((btf_decl_tag("comment:load_mode=no_jited")))
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/* Define common capabilities tested using __caps_unpriv */
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#define CAP_NET_ADMIN 12
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#define CAP_SYS_ADMIN 21
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#define CAP_PERFMON 38
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#define CAP_BPF 39
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/* Convenience macro for use with 'asm volatile' blocks */
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#define __naked __attribute__((naked))
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#define __clobber_all "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "memory"
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#define __clobber_common "r0", "r1", "r2", "r3", "r4", "r5", "memory"
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#define __imm(name) [name]"i"(name)
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#define __imm_const(name, expr) [name]"i"(expr)
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#define __imm_addr(name) [name]"i"(&name)
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#define __imm_ptr(name) [name]"r"(&name)
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#define __imm_insn(name, expr) [name]"i"(*(long *)&(expr))
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/* Magic constants used with __retval() */
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#define POINTER_VALUE 0xbadcafe
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#define TEST_DATA_LEN 64
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#ifndef __used
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#define __used __attribute__((used))
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#endif
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#if defined(__TARGET_ARCH_x86)
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#define SYSCALL_WRAPPER 1
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#define SYS_PREFIX "__x64_"
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#elif defined(__TARGET_ARCH_s390)
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#define SYSCALL_WRAPPER 1
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#define SYS_PREFIX "__s390x_"
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#elif defined(__TARGET_ARCH_arm64)
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#define SYSCALL_WRAPPER 1
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#define SYS_PREFIX "__arm64_"
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#elif defined(__TARGET_ARCH_riscv)
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#define SYSCALL_WRAPPER 1
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#define SYS_PREFIX "__riscv_"
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#elif defined(__TARGET_ARCH_powerpc)
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#define SYSCALL_WRAPPER 1
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#define SYS_PREFIX ""
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#else
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#define SYSCALL_WRAPPER 0
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#define SYS_PREFIX "__se_"
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#endif
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/* How many arguments are passed to function in register */
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#if defined(__TARGET_ARCH_x86) || defined(__x86_64__)
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#define FUNC_REG_ARG_CNT 6
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#elif defined(__i386__)
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#define FUNC_REG_ARG_CNT 3
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#elif defined(__TARGET_ARCH_s390) || defined(__s390x__)
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#define FUNC_REG_ARG_CNT 5
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#elif defined(__TARGET_ARCH_arm) || defined(__arm__)
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#define FUNC_REG_ARG_CNT 4
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#elif defined(__TARGET_ARCH_arm64) || defined(__aarch64__)
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#define FUNC_REG_ARG_CNT 8
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#elif defined(__TARGET_ARCH_mips) || defined(__mips__)
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#define FUNC_REG_ARG_CNT 8
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#elif defined(__TARGET_ARCH_powerpc) || defined(__powerpc__) || defined(__powerpc64__)
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#define FUNC_REG_ARG_CNT 8
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#elif defined(__TARGET_ARCH_sparc) || defined(__sparc__)
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#define FUNC_REG_ARG_CNT 6
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#elif defined(__TARGET_ARCH_riscv) || defined(__riscv__)
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#define FUNC_REG_ARG_CNT 8
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#else
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/* default to 5 for others */
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#define FUNC_REG_ARG_CNT 5
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#endif
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/* make it look to compiler like value is read and written */
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#define __sink(expr) asm volatile("" : "+g"(expr))
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
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(defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
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defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
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defined(__TARGET_ARCH_loongarch)) && \
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__clang_major__ >= 18
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#define CAN_USE_GOTOL
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#endif
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#if __clang_major__ >= 18
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#define CAN_USE_BPF_ST
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#endif
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#if __clang_major__ >= 18 && defined(ENABLE_ATOMICS_TESTS) && \
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(defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
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(defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64)) || \
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(defined(__TARGET_ARCH_powerpc))
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#define CAN_USE_LOAD_ACQ_STORE_REL
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#endif
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#if defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86)
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#define SPEC_V1
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#endif
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#if defined(__TARGET_ARCH_x86)
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#define SPEC_V4
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#endif
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#endif
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