This is a note to let you know that I've just added the patch titled
arm: kernel: Add SMC structure parameter
to the 4.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-kernel-add-smc-structure-parameter.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 10 18:08:16 CEST 2017
From: alexander.levin@xxxxxxxxxxx
Date: Tue, 4 Apr 2017 19:32:31 +0000
Subject: arm: kernel: Add SMC structure parameter
To: "gregkh@xxxxxxxxxxxxxxxxxxx" <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: "stable@xxxxxxxxxxxxxxx" <stable@xxxxxxxxxxxxxxx>
Message-ID: <20170404193158.19041-79-alexander.levin@xxxxxxxxxxx>
From: Andy Gross <andy.gross@xxxxxxxxxx>
[ Upstream commit 680a0873e193bae666439f4b5e32c758e68f114c ]
This patch adds a quirk parameter to the arm_smccc_(smc/hvc) calls.
The quirk structure allows for specialized SMC operations due to SoC
specific requirements. The current arm_smccc_(smc/hvc) is renamed and
macros are used instead to specify the standard arm_smccc_(smc/hvc) or
the arm_smccc_(smc/hvc)_quirk function.
This patch and partial implementation was suggested by Will Deacon.
Signed-off-by: Andy Gross <andy.gross@xxxxxxxxxx>
Reviewed-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/armksyms.c | 4 ++--
arch/arm/kernel/smccc-call.S | 14 ++++++++------
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/kernel/asm-offsets.c | 7 +++++--
arch/arm64/kernel/smccc-call.S | 14 ++++++++------
include/linux/arm-smccc.h | 40 ++++++++++++++++++++++++++++++++--------
6 files changed, 57 insertions(+), 26 deletions(-)
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -178,6 +178,6 @@ EXPORT_SYMBOL(__pv_offset);
#endif
#ifdef CONFIG_HAVE_ARM_SMCCC
-EXPORT_SYMBOL(arm_smccc_smc);
-EXPORT_SYMBOL(arm_smccc_hvc);
+EXPORT_SYMBOL(__arm_smccc_smc);
+EXPORT_SYMBOL(__arm_smccc_hvc);
#endif
--- a/arch/arm/kernel/smccc-call.S
+++ b/arch/arm/kernel/smccc-call.S
@@ -46,17 +46,19 @@ UNWIND( .fnend)
/*
* void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
- * unsigned long a6, unsigned long a7, struct arm_smccc_res *res)
+ * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
+ * struct arm_smccc_quirk *quirk)
*/
-ENTRY(arm_smccc_smc)
+ENTRY(__arm_smccc_smc)
SMCCC SMCCC_SMC
-ENDPROC(arm_smccc_smc)
+ENDPROC(__arm_smccc_smc)
/*
* void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
- * unsigned long a6, unsigned long a7, struct arm_smccc_res *res)
+ * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
+ * struct arm_smccc_quirk *quirk)
*/
-ENTRY(arm_smccc_hvc)
+ENTRY(__arm_smccc_hvc)
SMCCC SMCCC_HVC
-ENDPROC(arm_smccc_hvc)
+ENDPROC(__arm_smccc_hvc)
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -73,5 +73,5 @@ NOKPROBE_SYMBOL(_mcount);
#endif
/* arm-smccc */
-EXPORT_SYMBOL(arm_smccc_smc);
-EXPORT_SYMBOL(arm_smccc_hvc);
+EXPORT_SYMBOL(__arm_smccc_smc);
+EXPORT_SYMBOL(__arm_smccc_hvc);
--- a/arch/arm64/kernel/asm-offsets.c
+++ b/arch/arm64/kernel/asm-offsets.c
@@ -143,8 +143,11 @@ int main(void)
DEFINE(SLEEP_STACK_DATA_SYSTEM_REGS, offsetof(struct sleep_stack_data, system_regs));
DEFINE(SLEEP_STACK_DATA_CALLEE_REGS, offsetof(struct sleep_stack_data, callee_saved_regs));
#endif
- DEFINE(ARM_SMCCC_RES_X0_OFFS, offsetof(struct arm_smccc_res, a0));
- DEFINE(ARM_SMCCC_RES_X2_OFFS, offsetof(struct arm_smccc_res, a2));
+ DEFINE(ARM_SMCCC_RES_X0_OFFS, offsetof(struct arm_smccc_res, a0));
+ DEFINE(ARM_SMCCC_RES_X2_OFFS, offsetof(struct arm_smccc_res, a2));
+ DEFINE(ARM_SMCCC_QUIRK_ID_OFFS, offsetof(struct arm_smccc_quirk, id));
+ DEFINE(ARM_SMCCC_QUIRK_STATE_OFFS, offsetof(struct arm_smccc_quirk, state));
+
BLANK();
DEFINE(HIBERN_PBE_ORIG, offsetof(struct pbe, orig_address));
DEFINE(HIBERN_PBE_ADDR, offsetof(struct pbe, address));
--- a/arch/arm64/kernel/smccc-call.S
+++ b/arch/arm64/kernel/smccc-call.S
@@ -27,17 +27,19 @@
/*
* void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
- * unsigned long a6, unsigned long a7, struct arm_smccc_res *res)
+ * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
+ * struct arm_smccc_quirk *quirk)
*/
-ENTRY(arm_smccc_smc)
+ENTRY(__arm_smccc_smc)
SMCCC smc
-ENDPROC(arm_smccc_smc)
+ENDPROC(__arm_smccc_smc)
/*
* void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
- * unsigned long a6, unsigned long a7, struct arm_smccc_res *res)
+ * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
+ * struct arm_smccc_quirk *quirk)
*/
-ENTRY(arm_smccc_hvc)
+ENTRY(__arm_smccc_hvc)
SMCCC hvc
-ENDPROC(arm_smccc_hvc)
+ENDPROC(__arm_smccc_hvc)
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -72,33 +72,57 @@ struct arm_smccc_res {
};
/**
- * arm_smccc_smc() - make SMC calls
+ * struct arm_smccc_quirk - Contains quirk information
+ * @id: quirk identification
+ * @state: quirk specific information
+ * @a6: Qualcomm quirk entry for returning post-smc call contents of a6
+ */
+struct arm_smccc_quirk {
+ int id;
+ union {
+ unsigned long a6;
+ } state;
+};
+
+/**
+ * __arm_smccc_smc() - make SMC calls
* @a0-a7: arguments passed in registers 0 to 7
* @res: result values from registers 0 to 3
+ * @quirk: points to an arm_smccc_quirk, or NULL when no quirks are required.
*
* This function is used to make SMC calls following SMC Calling Convention.
* The content of the supplied param are copied to registers 0 to 7 prior
* to the SMC instruction. The return values are updated with the content
- * from register 0 to 3 on return from the SMC instruction.
+ * from register 0 to 3 on return from the SMC instruction. An optional
+ * quirk structure provides vendor specific behavior.
*/
-asmlinkage void arm_smccc_smc(unsigned long a0, unsigned long a1,
+asmlinkage void __arm_smccc_smc(unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3, unsigned long a4,
unsigned long a5, unsigned long a6, unsigned long a7,
- struct arm_smccc_res *res);
+ struct arm_smccc_res *res, struct arm_smccc_quirk *quirk);
/**
- * arm_smccc_hvc() - make HVC calls
+ * __arm_smccc_hvc() - make HVC calls
* @a0-a7: arguments passed in registers 0 to 7
* @res: result values from registers 0 to 3
*
* This function is used to make HVC calls following SMC Calling
* Convention. The content of the supplied param are copied to registers 0
* to 7 prior to the HVC instruction. The return values are updated with
- * the content from register 0 to 3 on return from the HVC instruction.
+ * the content from register 0 to 3 on return from the HVC instruction. An
+ * optional quirk structure provides vendor specific behavior.
*/
-asmlinkage void arm_smccc_hvc(unsigned long a0, unsigned long a1,
+asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3, unsigned long a4,
unsigned long a5, unsigned long a6, unsigned long a7,
- struct arm_smccc_res *res);
+ struct arm_smccc_res *res, struct arm_smccc_quirk *quirk);
+
+#define arm_smccc_smc(...) __arm_smccc_smc(__VA_ARGS__, NULL)
+
+#define arm_smccc_smc_quirk(...) __arm_smccc_smc(__VA_ARGS__)
+
+#define arm_smccc_hvc(...) __arm_smccc_hvc(__VA_ARGS__, NULL)
+
+#define arm_smccc_hvc_quirk(...) __arm_smccc_hvc(__VA_ARGS__)
#endif /*__LINUX_ARM_SMCCC_H*/
Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are
queue-4.10/staging-android-ashmem-lseek-failed-due-to-no-fmode_lseek.patch
queue-4.10/acpi-button-change-default-behavior-to-lid_init_state-open.patch
queue-4.10/usb-musb-da8xx-fix-host-mode-suspend.patch
queue-4.10/drm-i915-fix-intel_bdw_ids-definition.patch
queue-4.10/drm-i915-gvt-fix-gvt-scheduler-interval-time.patch
queue-4.10/sysfs-be-careful-of-error-returns-from-ops-show.patch
queue-4.10/pci-thunder-pem-add-legacy-firmware-support-for-cavium-thunderx-host-controller.patch
queue-4.10/pci-thunder-pem-fix-legacy-firmware-pem-specific-resources.patch
queue-4.10/mips-flush-wrong-invalid-ftlb-entry-for-huge-page.patch
queue-4.10/mips-end-spinlocks-with-.insn.patch
queue-4.10/dax-fix-radix-tree-insertion-race.patch
queue-4.10/mmc-sdhci-of-esdhc-remove-default-broken-cd-for-arm.patch
queue-4.10/jump-label-fix-passing-kbuild_cflags-when-checking-for-asm-goto-support.patch
queue-4.10/kvm-arm-arm64-fix-locking-for-kvm_free_stage2_pgd.patch
queue-4.10/iio-st_pressure-initialize-lps22hb-bootime.patch
queue-4.10/powerpc-disable-hfscr-if-tm-is-not-supported.patch
queue-4.10/metag-usercopy-add-missing-fixups.patch
queue-4.10/nios2-reserve-boot-memory-for-device-tree.patch
queue-4.10/platform-x86-asus-wmi-detect-quirk_no_rfkill-from-the-dsdt.patch
queue-4.10/ring-buffer-fix-return-value-check-in-test_ringbuffer.patch
queue-4.10/firmware-qcom-scm-fix-interrupted-scm-calls.patch
queue-4.10/pci-add-broadcom-northstar2-paxc-quirk-for-device-class-and-mpss.patch
queue-4.10/drm-msm-adreno-fix-build-error-without-debugfs.patch
queue-4.10/powerpc-64-fix-flush_-d-i-cache_range-called-from-modules.patch
queue-4.10/acpi-gpio-do-not-fall-back-to-parsing-_crs-when-we-get-a-deferral.patch
queue-4.10/metag-usercopy-add-early-abort-to-copy_to_user.patch
queue-4.10/powerpc-crypto-crc32c-vpmsum-fix-missing-preempt_disable.patch
queue-4.10/arm-arm64-kvm-take-mmap_sem-in-kvm_arch_prepare_memory_region.patch
queue-4.10/rx51-broken-build.patch
queue-4.10/mips-ralink-fix-typos-in-rt3883-pinctrl.patch
queue-4.10/cfg80211-check-rdev-resume-callback-only-for-registered-wiphy.patch
queue-4.10/metag-usercopy-set-flags-before-addz.patch
queue-4.10/metag-usercopy-fix-src-fixup-in-from-user-rapf-loops.patch
queue-4.10/xtensa-make-__pa-work-with-uncached-kseg-addresses.patch
queue-4.10/asoc-codecs-rt5670-add-quirk-for-lenovo-thinkpad-10.patch
queue-4.10/powerpc-mm-add-missing-global-tlb-invalidate-if-cxl-is-active.patch
queue-4.10/tools-power-turbostat-dump-atom-p-states-correctly.patch
queue-4.10/asoc-intel-cht_bsw_rt5645-add-baytrail-mclk-support.patch
queue-4.10/watchdog-s3c2410-fix-infinite-interrupt-in-soft-mode.patch
queue-4.10/drm-i915-actually-drive-the-bdw-reserved-ids.patch
queue-4.10/serial-8250_omap-add-omap_dma_tx_kick-quirk-for-am437x.patch
queue-4.10/brcmfmac-use-local-iftype-avoiding-use-after-free-of-virtual-interface.patch
queue-4.10/drm-vmwgfx-remove-getparam-error-message.patch
queue-4.10/mac80211-unconditionally-start-new-netdev-queues-with-itxq-support.patch
queue-4.10/dm-verity-fec-fix-bufio-leaks.patch
queue-4.10/hid-wacom-don-t-apply-generic-settings-to-old-devices.patch
queue-4.10/x86-mce-don-t-print-mces-when-mcelog-is-active.patch
queue-4.10/arm-kernel-add-smc-structure-parameter.patch
queue-4.10/usb-storage-add-ignore-residue-quirk-for-initio-inic-3619.patch
queue-4.10/drm-vmwgfx-type-check-lookups-of-fence-objects.patch
queue-4.10/dm-verity-fec-limit-error-correction-recursion.patch
queue-4.10/drm-edid-constify-edid-quirk-list.patch
queue-4.10/s390-uaccess-get_user-should-zero-on-failure-again.patch
queue-4.10/dm-raid-fix-null-pointer-dereference-for-raid1-without-bitmap.patch
queue-4.10/random-use-chacha20-for-get_random_int-long.patch
queue-4.10/ptrace-fix-ptrace_listen-race-corrupting-task-state.patch
queue-4.10/drm-vmwgfx-fix-integer-overflow-in-vmw_surface_define_ioctl.patch
queue-4.10/pci-sort-the-list-of-devices-with-d3-delay-quirk-by-id.patch
queue-4.10/s390-decompressor-fix-initrd-corruption-caused-by-bss-clear.patch
queue-4.10/pci-disable-msi-for-hisilicon-hip06-hip07-root-ports.patch
queue-4.10/mips-check-tlb-before-handle_ri_rdhwr-for-loongson-3.patch
queue-4.10/pci-add-acs-quirk-for-intel-union-point.patch
queue-4.10/asoc-intel-baytrail-add-quirk-for-lenovo-thinkpad-10.patch
queue-4.10/can-flexcan-add-quirk-flexcan_quirk_enable_eacen_rrs.patch
queue-4.10/metag-usercopy-drop-unused-macros.patch
queue-4.10/drm-i915-more-.is_mobile-cleanups-for-bdw.patch
queue-4.10/hid-multitouch-enable-the-surface-4-type-cover-pro-jp-to-report-multitouch-data.patch
queue-4.10/iio-bmg160-reset-chip-when-probing.patch
queue-4.10/orangefs-move-features-validation-to-fix-filesystem-hang.patch
queue-4.10/arm64-mm-unaligned-access-by-user-land-should-be-received-as-sigbus.patch
queue-4.10/powerpc-don-t-try-to-fix-up-misaligned-load-with-reservation-instructions.patch
queue-4.10/usb-chipidea-msm-rely-on-core-to-override-ahbburst.patch
queue-4.10/asoc-intel-bytcr_rt5640-quirks-for-insyde-devices.patch
queue-4.10/mips-lantiq-fix-missing-xbar-kernel-panic.patch
queue-4.10/metag-usercopy-zero-rest-of-buffer-from-copy_from_user.patch
queue-4.10/xfs-honor-falloc_fl_keep_size-when-punching-ends-of-files.patch
queue-4.10/metag-usercopy-fix-alignment-error-checking.patch
queue-4.10/x86-reboot-quirks-add-asus-eeebook-x205ta-reboot-quirk.patch
queue-4.10/iio-core-fix-iio_val_fractional_log2-for-negative-values.patch
queue-4.10/pci-xgene-fix-double-free-on-init-error.patch
queue-4.10/acpi-save-nvs-memory-for-lenovo-g50-45.patch
queue-4.10/asoc-intel-cht_bsw_rt5645-harden-acpi-device-detection.patch
queue-4.10/sata-ahci-da850-implement-a-workaround-for-the-softreset-quirk.patch
queue-4.10/reset-treeid-to-zero-on-smb2-tree_connect.patch
queue-4.10/pci-add-acs-quirk-for-qualcomm-qdf2400-and-qdf2432.patch
queue-4.10/tools-power-turbostat-decode-baytrail-cc6-and-mc6-demotion-configuration.patch
queue-4.10/documentation-stable-kernel-rules-fix-stable-tag-format.patch
queue-4.10/drm-mga-remove-device_is_agp-callback.patch
queue-4.10/usb-host-xhci-plat-enable-broken_ped-quirk-if-platform-requested.patch
queue-4.10/mm-mempolicy.c-fix-error-handling-in-set_mempolicy-and-mbind.patch
queue-4.10/arm-arm64-kvm-take-mmap_sem-in-stage2_unmap_vm.patch
queue-4.10/mm-page_alloc.c-fix-print-order-in-show_free_areas.patch
queue-4.10/usb-dwc3-host-pass-quirk-broken-port-ped-property-for-known-broken-revisions.patch
queue-4.10/kvm-fix-page-struct-leak-in-handle_vmon.patch
queue-4.10/arm-smccc-update-hvc-comment-to-describe-new-quirk-parameter.patch
queue-4.10/mips-c-r4k-fix-loongson-3-s-vcache-scache-waysize-calculation.patch
queue-4.10/drm-vmwgfx-avoid-calling-vzalloc-with-a-0-size-in-vmw_get_cap_3d_ioctl.patch
queue-4.10/usb-xhci-add-quirk-flag-for-broken-ped-bits.patch
queue-4.10/mips-force-o32-fp64-support-on-32bit-mips64r6-kernels.patch
queue-4.10/arm-davinci-add-skeleton-for-pdata-quirks.patch
queue-4.10/usb-dwc3-gadget-delay-unmap-of-bounced-requests.patch
queue-4.10/x86-reboot-quirks-fix-typo-in-asus-eeebook-x205ta-reboot-quirk.patch
queue-4.10/mips-add-mips_cpu_ftlb-for-loongson-3a-r2.patch
queue-4.10/kbuild-use-cc-disable-warning-consistently-for-maybe-uninitialized.patch
queue-4.10/arm-omap2-fix-init-for-multiple-quirks-for-the-same-soc.patch
queue-4.10/x86-reboot-quirks-add-asus-eeebook-x205ta-w-reboot-quirk.patch
queue-4.10/drm-i915-kvmgt-fix-suspicious-rcu-dereference-usage.patch
queue-4.10/acpi-scan-prefer-devices-without-_hid-for-_adr-matching.patch
queue-4.10/drm-ttm-drm-vmwgfx-relax-permission-checking-when-opening-surfaces.patch
queue-4.10/drm-vmwgfx-null-pointer-dereference-in-vmw_surface_define_ioctl.patch
queue-4.10/asoc-sun4i-i2s-add-quirks-to-handle-a31-compatible.patch