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2022-12-01RISC-V: Fix a race condition during kernel stack overflowPalmer Dabbelt
This fixes a concrete bug but is also the basis for some cleanup work, so I'm merging it based on the offending commit in order to minimize future conflicts. * commit '7e1864332fbc1b993659eab7974da9fe8bf8c128': riscv: fix race when vmap stack overflow
2022-12-01Merge tag 'efi-fixes-for-v6.1-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi Pull EFI fix from Ard Biesheuvel: "A single revert for some code that I added during this cycle. The code is not wrong, but it should be a bit more careful about how to handle the shadow call stack pointer, so it is better to revert it for now and bring it back later in improved form. Summary: - Revert runtime service sync exception recovery on arm64" * tag 'efi-fixes-for-v6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: arm64: efi: Revert "Recover from synchronous exceptions ..."
2022-12-01arm64/sysreg: Remove duplicate definitions from asm/sysreg.hWill Deacon
With the new-fangled generation of asm/sysreg-defs.h, some definitions have ended up being duplicated between the two files. Remove these duplicate definitions, and consolidate the naming for GMID_EL1_BS_WIDTH. Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01ARM: dts: sti: align LED node names with dtschemaKrzysztof Kozlowski
The node names should be generic and DT schema expects certain pattern: stih407-b2120.dtb: leds: 'green', 'red' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Link: https://lore.kernel.org/r/20221125144116.476877-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2022-12-01ARM: dts: am335x: align LED node names with dtschemaKrzysztof Kozlowski
The node names should be generic and DT schema expects certain pattern: am335x-baltos-ir2110.dtb: leds: 'app', 'power', 'wlan' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20221125144118.476905-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2022-12-01ARM: dts: omap: echo: use preferred enable-gpios for LP5523 LEDKrzysztof Kozlowski
The preferred name suffix for properties with single and multiple GPIOs is "gpios". Linux GPIO core code supports both. Bindings are going to expect the "gpios" one: omap3-echo.dtb: lp5523A@32: 'enable-gpio' does not match any of the regexes: '^led@[0-8]$', '^multi-led@[0-8]$', 'pinctrl-[0-9]+' Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20221127203034.54092-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2022-12-01ARM: dts: omap: align LED node names with dtschemaKrzysztof Kozlowski
The node names should be generic and DT schema expects certain pattern: omap3-beagle-ab4.dtb: leds: 'heartbeat', 'mmc', 'pmu_stat' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20221127203034.54092-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2022-12-01ARM: dts: logicpd: align LED node names with dtschemaKrzysztof Kozlowski
The node names should be generic and DT schema expects certain pattern: logicpd-torpedo-37xx-devkit.dtb: leds: 'user0' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20221125144122.476962-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
2022-12-01mm/pgtable: Fix multiple -Wstringop-overflow warningsGustavo A. R. Silva
The actual size of the following arrays at run-time depends on CONFIG_X86_PAE. 427 pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS]; 428 pmd_t *pmds[MAX_PREALLOCATED_PMDS]; If CONFIG_X86_PAE is not enabled, their final size will be zero (which is technically not a legal storage size in C, but remains "valid" via the GNU extension). In that case, the compiler complains about trying to access objects of size zero when calling functions where these objects are passed as arguments. Fix this by sanity-checking the size of those arrays just before the function calls. Also, the following warnings are fixed by these changes when building with GCC 11+ and -Wstringop-overflow enabled: arch/x86/mm/pgtable.c:437:13: warning: ‘preallocate_pmds.constprop’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=] arch/x86/mm/pgtable.c:440:13: warning: ‘preallocate_pmds.constprop’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=] arch/x86/mm/pgtable.c:462:9: warning: ‘free_pmds.constprop’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=] arch/x86/mm/pgtable.c:455:9: warning: ‘pgd_prepopulate_user_pmd’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=] arch/x86/mm/pgtable.c:464:9: warning: ‘free_pmds.constprop’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=] This is one of the last cases in the ongoing effort to globally enable -Wstringop-overflow. The alternative to this is to make the originally suggested change: make the pmds argument from an array pointer to a pointer pointer. That situation is considered "legal" for C in the sense that it does not have a way to reason about the storage. i.e.: -static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) +static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t **pmds) With the above change, there's no difference in binary output, and the compiler warning is silenced. However, with this patch, the compiler can actually figure out that it isn't using the code at all, and it gets dropped: text data bss dec hex filename 8218 718 32 8968 2308 arch/x86/mm/pgtable.o.before 7765 694 32 8491 212b arch/x86/mm/pgtable.o.after So this case (fixing a warning and reducing image size) is a clear win. Additionally drops an old work-around for GCC in the same code. Link: https://github.com/KSPP/linux/issues/203 Link: https://github.com/KSPP/linux/issues/181 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/Yytb67xvrnctxnEe@work
2022-12-02arm64: dts: apple: Add CPU topology & cpufreq nodes for t8103Hector Martin
Add the missing CPU topology/capacity information and the cpufreq nodes, so we can have CPU frequency scaling and the scheduler has the information it needs to make the correct decisions. Boost states are commented out, as they are not yet available (that requires CPU deep sleep support, to be eventually done via PSCI). The driver supports them fine; the hardware will just refuse to ever go into them at this time, so don't expose them to users until that's done. Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Hector Martin <marcan@marcan.st>
2022-12-01arm64/sysreg: Convert ID_DFR1_EL1 to automatic generationJames Morse
Convert ID_DFR1_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-39-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_DFR0_EL1 to automatic generationJames Morse
Convert ID_DFR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221130171637.718182-38-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_AFR0_EL1 to automatic generationJames Morse
Convert ID_AFR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-37-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR5_EL1 to automatic generationJames Morse
Convert ID_MMFR5_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-36-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert MVFR2_EL1 to automatic generationJames Morse
Convert MVFR2_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-35-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert MVFR1_EL1 to automatic generationJames Morse
Convert MVFR1_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-34-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert MVFR0_EL1 to automatic generationJames Morse
Convert MVFR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-33-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_PFR2_EL1 to automatic generationJames Morse
Convert ID_PFR2_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-32-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_PFR1_EL1 to automatic generationJames Morse
Convert ID_PFR1_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-31-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_PFR0_EL1 to automatic generationJames Morse
Convert ID_PFR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221130171637.718182-30-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR6_EL1 to automatic generationJames Morse
Convert ID_ISAR6_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-29-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR5_EL1 to automatic generationJames Morse
Convert ID_ISAR5_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-28-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR4_EL1 to automatic generationJames Morse
Convert ID_ISAR4_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-27-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR3_EL1 to automatic generationJames Morse
Convert ID_ISAR3_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-26-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR2_EL1 to automatic generationJames Morse
Convert ID_ISAR2_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-25-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR1_EL1 to automatic generationJames Morse
Convert ID_ISAR1_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-24-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_ISAR0_EL1 to automatic generationJames Morse
Convert ID_ISAR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-23-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR4_EL1 to automatic generationJames Morse
Convert ID_MMFR4_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-22-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR3_EL1 to automatic generationJames Morse
Convert ID_MMFR3_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-21-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR2_EL1 to automatic generationJames Morse
Convert ID_MMFR2_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-20-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR1_EL1 to automatic generationJames Morse
Convert ID_MMFR1_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-19-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Convert ID_MMFR0_EL1 to automatic generationJames Morse
Convert ID_MMFR0_EL1 to be automatically generated as per DDI0487I.a, no functional changes. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-18-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Extend the maximum width of a register and symbol nameJames Morse
32bit has multiple values for its id registers, as extra properties were added to the CPUs. Some of these end up having long names, which exceed the fixed 48 character column that the sysreg awk script generates. For example, the ID_MMFR1_EL1.L1Hvd field has an encoding whose natural name would be 'invalidate Iside only'. Using this causes compile errors as the script generates the following: #define ID_MMFR1_EL1_L1Hvd_INVALIDATE_ISIDE_ONLYUL(0b0001) Add a few extra characters. Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-17-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for MVFR2_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the MVFR2_EL1 register use lower-case for feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-16-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for MVFR1_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the MVFR1_EL1 register use lower-case for feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-15-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for MVFR0_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the MVFR0_EL1 register use lower-case for feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-14-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_DFR1_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_DFR1_EL1 register have an _EL1 suffix. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-13-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_DFR0_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_DFR0_EL1 register have an _EL1 suffix, and use lower-case for feature names where the arm-arm does the same. The arm-arm has feature names for some of the ID_DFR0_EL1.PerMon encodings. Use these feature names in preference to the '8_4' indication of the architecture version they were introduced in. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-12-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_PFR2_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_PFR2_EL1 register have an _EL1 suffix. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-11-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_PFR1_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_PFR1_EL1 register have an _EL1 suffix, and use lower case in feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-10-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_PFR0_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_PFR0_EL1 register have an _EL1 suffix, and use lower case in feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-9-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_ISAR6_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_ISAR6_EL1 register have an _EL1 suffix. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-8-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_ISAR5_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_ISAR5_EL1 register have an _EL1 suffix. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-7-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_ISAR4_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_ISAR4_EL1 register have an _EL1 suffix, and use lower-case for feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-6-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_ISAR0_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_ISAR0_EL1 register have an _EL1 suffix, and use lower-case for feature names where the arm-arm does the same. To functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-5-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_MMFR5_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_MMFR5_EL1 register have an _EL1 suffix. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-4-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_MMFR4_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. Ensure symbols for the ID_MMFR4_EL1 register have an _EL1 suffix, and use lower case in feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-3-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64/sysreg: Standardise naming for ID_MMFR0_EL1James Morse
To convert the 32bit id registers to use the sysreg generation, they must first have a regular pattern, to match the symbols the script generates. The scripts would like to follow exactly what is in the arm-arm, which uses lower case for some of these feature names. Ensure symbols for the ID_MMFR0_EL1 register have an _EL1 suffix, and use lower case in feature names where the arm-arm does the same. No functional change. Signed-off-by: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/r/20221130171637.718182-2-james.morse@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2022-12-01arm64: efi: Revert "Recover from synchronous exceptions ..."Ard Biesheuvel
This reverts commit 23715a26c8d81291, which introduced some code in assembler that manipulates both the ordinary and the shadow call stack pointer in a way that could potentially be taken advantage of. So let's revert it, and do a better job the next time around. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2022-12-01mips: ralink: mt7621: do not use kzalloc too earlyJohn Thomson
With CONFIG_SLUB=y, following commit 6edf2576a6cc ("mm/slub: enable debugging memory wasting of kmalloc") mt7621 failed to boot very early, without showing any console messages. This exposed the pre-existing bug of mt7621.c using kzalloc before normal memory management was available. Prior to this slub change, there existed the unintended protection against "kmem_cache *s" being NULL as slab_pre_alloc_hook() happened to return NULL and bailed out of slab_alloc_node(). This allowed mt7621 prom_soc_init to fail in the soc_dev_init kzalloc, but continue booting without the SOC_BUS driver device registered. Console output from a DEBUG_ZBOOT vmlinuz kernel loading, with mm/slub modified to warn on kmem_cache zero or null: zimage at: 80B842A0 810B4BC0 Uncompressing Linux at load address 80001000 Copy device tree to address 80B80EE0 Now, booting the kernel... [ 0.000000] Linux version 6.1.0-rc3+ (john@john) (mipsel-buildroot-linux-gnu-gcc.br_real (Buildroot 2021.11-4428-g6b6741b) 12.2.0, GNU ld (GNU Binutils) 2.39) #73 SMP Wed Nov 2 05:10:01 AEST 2022 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at mm/slub.c:3416 kmem_cache_alloc+0x5a4/0x5e8 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.1.0-rc3+ #73 [ 0.000000] Stack : 810fff78 80084d98 00000000 00000004 00000000 00000000 80889d04 80c90000 [ 0.000000] 80920000 807bd328 8089d368 80923bd3 00000000 00000001 80889cb0 00000000 [ 0.000000] 00000000 00000000 807bd328 8084bcb1 00000002 00000002 00000001 6d6f4320 [ 0.000000] 00000000 80c97d3d 80c97d68 fffffffc 807bd328 00000000 00000000 00000000 [ 0.000000] 00000000 a0000000 80910000 8110a0b4 00000000 00000020 80010000 80010000 [ 0.000000] ... [ 0.000000] Call Trace: [ 0.000000] [<80008260>] show_stack+0x28/0xf0 [ 0.000000] [<8070c958>] dump_stack_lvl+0x60/0x80 [ 0.000000] [<8002e184>] __warn+0xc4/0xf8 [ 0.000000] [<8002e210>] warn_slowpath_fmt+0x58/0xa4 [ 0.000000] [<801c0fac>] kmem_cache_alloc+0x5a4/0x5e8 [ 0.000000] [<8092856c>] prom_soc_init+0x1fc/0x2b4 [ 0.000000] [<80928060>] prom_init+0x44/0xf0 [ 0.000000] [<80929214>] setup_arch+0x4c/0x6a8 [ 0.000000] [<809257e0>] start_kernel+0x88/0x7c0 [ 0.000000] [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3 [ 0.000000] printk: bootconsole [early0] enabled Allowing soc_device_register to work exposed oops in the mt7621 phy pci, and pci controller drivers from soc_device_match_attr, due to missing sentinels in the quirks tables. These were fixed with: commit 819b885cd886 ("phy: ralink: mt7621-pci: add sentinel to quirks table") not yet applied ("PCI: mt7621: add sentinel to quirks table") Link: https://lore.kernel.org/linux-mm/becf2ac3-2a90-4f3a-96d9-a70f67c66e4a@app.fastmail.com/ Fixes: 71b9b5e0130d ("MIPS: ralink: mt7621: introduce 'soc_device' initialization") Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>