Merge branch 'fixes' into next (b3124ec2) · Commits · e / devices / android_kernel_fairphone_FP4

arch/powerpc/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -237,6 +237,7 @@ endif
		cpu-as-$(CONFIG_4xx) += -Wa,-m405
		cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
		cpu-as-$(CONFIG_E200) += -Wa,-me200
		cpu-as-$(CONFIG_E500) += -Wa,-me500
		cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4
		cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc)

arch/powerpc/include/asm/mmu_context.h

+23 −14

Original line number	Diff line number	Diff line
		@@ -35,9 +35,9 @@ extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup_rm(
		extern struct mm_iommu_table_group_mem_t mm_iommu_find(struct mm_struct mm,
		unsigned long ua, unsigned long entries);
		extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem,
		unsigned long ua, unsigned long *hpa);
		unsigned long ua, unsigned int pageshift, unsigned long *hpa);
		extern long mm_iommu_ua_to_hpa_rm(struct mm_iommu_table_group_mem_t *mem,
		unsigned long ua, unsigned long *hpa);
		unsigned long ua, unsigned int pageshift, unsigned long *hpa);
		extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem);
		extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem);
		#endif
		@@ -143,23 +143,32 @@ static inline void mm_context_remove_copro(struct mm_struct *mm)
		{
		int c;

		c = atomic_dec_if_positive(&mm->context.copros);

		/* Detect imbalance between add and remove */
		WARN_ON(c < 0);

		/*
		* Need to broadcast a global flush of the full mm before
		* decrementing active_cpus count, as the next TLBI may be
		* local and the nMMU and/or PSL need to be cleaned up.
		* Should be rare enough so that it's acceptable.
		* When removing the last copro, we need to broadcast a global
		* flush of the full mm, as the next TLBI may be local and the
		* nMMU and/or PSL need to be cleaned up.
		*
		* Both the 'copros' and 'active_cpus' counts are looked at in
		* flush_all_mm() to determine the scope (local/global) of the
		* TLBIs, so we need to flush first before decrementing
		* 'copros'. If this API is used by several callers for the
		* same context, it can lead to over-flushing. It's hopefully
		* not common enough to be a problem.
		*
		* Skip on hash, as we don't know how to do the proper flush
		* for the time being. Invalidations will remain global if
		* used on hash.
		* used on hash. Note that we can't drop 'copros' either, as
		* it could make some invalidations local with no flush
		* in-between.
		*/
		if (c == 0 && radix_enabled()) {
		if (radix_enabled()) {
		flush_all_mm(mm);

		c = atomic_dec_if_positive(&mm->context.copros);
		/* Detect imbalance between add and remove */
		WARN_ON(c < 0);

		if (c == 0)
		dec_mm_active_cpus(mm);
		}
		}

arch/powerpc/kernel/idle_book3s.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -146,7 +146,9 @@ power9_restore_additional_sprs:
		mtspr SPRN_MMCR1, r4

		ld r3, STOP_MMCR2(r13)
		ld r4, PACA_SPRG_VDSO(r13)
		mtspr SPRN_MMCR2, r3
		mtspr SPRN_SPRG3, r4
		blr

		/*

arch/powerpc/kvm/book3s_64_vio.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -449,7 +449,7 @@ long kvmppc_tce_iommu_do_map(struct kvm kvm, struct iommu_table tbl,
		/* This only handles v2 IOMMU type, v1 is handled via ioctl() */
		return H_TOO_HARD;

		if (WARN_ON_ONCE(mm_iommu_ua_to_hpa(mem, ua, &hpa)))
		if (WARN_ON_ONCE(mm_iommu_ua_to_hpa(mem, ua, tbl->it_page_shift, &hpa)))
		return H_HARDWARE;

		if (mm_iommu_mapped_inc(mem))

arch/powerpc/kvm/book3s_64_vio_hv.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -275,7 +275,8 @@ static long kvmppc_rm_tce_iommu_do_map(struct kvm kvm, struct iommu_table tbl,
		if (!mem)
		return H_TOO_HARD;

		if (WARN_ON_ONCE_RM(mm_iommu_ua_to_hpa_rm(mem, ua, &hpa)))
		if (WARN_ON_ONCE_RM(mm_iommu_ua_to_hpa_rm(mem, ua, tbl->it_page_shift,
		&hpa)))
		return H_HARDWARE;

		if (WARN_ON_ONCE_RM(mm_iommu_mapped_inc(mem)))
		@@ -461,7 +462,8 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,

		mem = mm_iommu_lookup_rm(vcpu->kvm->mm, ua, IOMMU_PAGE_SIZE_4K);
		if (mem)
		prereg = mm_iommu_ua_to_hpa_rm(mem, ua, &tces) == 0;
		prereg = mm_iommu_ua_to_hpa_rm(mem, ua,
		IOMMU_PAGE_SHIFT_4K, &tces) == 0;
		}

		if (!prereg) {