From 088e28772c504ad622ba909b0f6d2986910e7a97 Mon Sep 17 00:00:00 2001 From: Kevin Darbyshire-Bryant Date: Mon, 15 May 2017 15:03:47 +0100 Subject: kernel: update kernel 4.4 to version 4.4.69 Refresh patches. A number of patches have landed upstream & hence are no longer required locally: 062-[1-6]-MIPS-* series 042-0004-mtd-bcm47xxpart-fix-parsing-first-block Reintroduced lantiq/patches-4.4/0050-MIPS-Lantiq-Fix-cascaded-IRQ-setup as it was incorrectly included upstream thus dropped from LEDE. As it has now been reverted upstream it needs to be included again for LEDE. Run tested ar71xx Archer C7 v2 and lantiq. Signed-off-by: Kevin Darbyshire-Bryant [update from 4.4.68 to 4.4.69] Signed-off-by: Hauke Mehrtens --- ...IPS-Switch-to-the-irq_stack-in-interrupts.patch | 116 --------------------- 1 file changed, 116 deletions(-) delete mode 100644 target/linux/generic/patches-4.4/062-04-MIPS-Switch-to-the-irq_stack-in-interrupts.patch (limited to 'target/linux/generic/patches-4.4/062-04-MIPS-Switch-to-the-irq_stack-in-interrupts.patch') diff --git a/target/linux/generic/patches-4.4/062-04-MIPS-Switch-to-the-irq_stack-in-interrupts.patch b/target/linux/generic/patches-4.4/062-04-MIPS-Switch-to-the-irq_stack-in-interrupts.patch deleted file mode 100644 index 9bd2336974..0000000000 --- a/target/linux/generic/patches-4.4/062-04-MIPS-Switch-to-the-irq_stack-in-interrupts.patch +++ /dev/null @@ -1,116 +0,0 @@ -From: Matt Redfearn -Date: Mon, 19 Dec 2016 14:20:59 +0000 -Subject: [PATCH] MIPS: Switch to the irq_stack in interrupts - -When enterring interrupt context via handle_int or except_vec_vi, switch -to the irq_stack of the current CPU if it is not already in use. - -The current stack pointer is masked with the thread size and compared to -the base or the irq stack. If it does not match then the stack pointer -is set to the top of that stack, otherwise this is a nested irq being -handled on the irq stack so the stack pointer should be left as it was. - -The in-use stack pointer is placed in the callee saved register s1. It -will be saved to the stack when plat_irq_dispatch is invoked and can be -restored once control returns here. - -Signed-off-by: Matt Redfearn ---- - ---- a/arch/mips/kernel/genex.S -+++ b/arch/mips/kernel/genex.S -@@ -188,9 +188,44 @@ NESTED(handle_int, PT_SIZE, sp) - - LONG_L s0, TI_REGS($28) - LONG_S sp, TI_REGS($28) -- PTR_LA ra, ret_from_irq -- PTR_LA v0, plat_irq_dispatch -- jr v0 -+ -+ /* -+ * SAVE_ALL ensures we are using a valid kernel stack for the thread. -+ * Check if we are already using the IRQ stack. -+ */ -+ move s1, sp # Preserve the sp -+ -+ /* Get IRQ stack for this CPU */ -+ ASM_CPUID_MFC0 k0, ASM_SMP_CPUID_REG -+#if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32) -+ lui k1, %hi(irq_stack) -+#else -+ lui k1, %highest(irq_stack) -+ daddiu k1, %higher(irq_stack) -+ dsll k1, 16 -+ daddiu k1, %hi(irq_stack) -+ dsll k1, 16 -+#endif -+ LONG_SRL k0, SMP_CPUID_PTRSHIFT -+ LONG_ADDU k1, k0 -+ LONG_L t0, %lo(irq_stack)(k1) -+ -+ # Check if already on IRQ stack -+ PTR_LI t1, ~(_THREAD_SIZE-1) -+ and t1, t1, sp -+ beq t0, t1, 2f -+ -+ /* Switch to IRQ stack */ -+ li t1, _IRQ_STACK_SIZE -+ PTR_ADD sp, t0, t1 -+ -+2: -+ jal plat_irq_dispatch -+ -+ /* Restore sp */ -+ move sp, s1 -+ -+ j ret_from_irq - #ifdef CONFIG_CPU_MICROMIPS - nop - #endif -@@ -263,8 +298,44 @@ NESTED(except_vec_vi_handler, 0, sp) - - LONG_L s0, TI_REGS($28) - LONG_S sp, TI_REGS($28) -- PTR_LA ra, ret_from_irq -- jr v0 -+ -+ /* -+ * SAVE_ALL ensures we are using a valid kernel stack for the thread. -+ * Check if we are already using the IRQ stack. -+ */ -+ move s1, sp # Preserve the sp -+ -+ /* Get IRQ stack for this CPU */ -+ ASM_CPUID_MFC0 k0, ASM_SMP_CPUID_REG -+#if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32) -+ lui k1, %hi(irq_stack) -+#else -+ lui k1, %highest(irq_stack) -+ daddiu k1, %higher(irq_stack) -+ dsll k1, 16 -+ daddiu k1, %hi(irq_stack) -+ dsll k1, 16 -+#endif -+ LONG_SRL k0, SMP_CPUID_PTRSHIFT -+ LONG_ADDU k1, k0 -+ LONG_L t0, %lo(irq_stack)(k1) -+ -+ # Check if already on IRQ stack -+ PTR_LI t1, ~(_THREAD_SIZE-1) -+ and t1, t1, sp -+ beq t0, t1, 2f -+ -+ /* Switch to IRQ stack */ -+ li t1, _IRQ_STACK_SIZE -+ PTR_ADD sp, t0, t1 -+ -+2: -+ jal plat_irq_dispatch -+ -+ /* Restore sp */ -+ move sp, s1 -+ -+ j ret_from_irq - END(except_vec_vi_handler) - - /* -- cgit v1.2.3