AuxXxilium/linux_dsm_epyc7002
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10c5e83afd
linux_dsm_epyc7002/arch/powerpc/mm
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Diana Craciun 10c5e83afd powerpc/fsl: Flush the branch predictor at each kernel entry (64bit) 
In order to protect against speculation attacks on
indirect branches, the branch predictor is flushed at
kernel entry to protect for the following situations:
- userspace process attacking another userspace process
- userspace process attacking the kernel
Basically when the privillege level change (i.e. the
kernel is entered), the branch predictor state is flushed.

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-20 22:59:03 +11:00
..
8xx_mmu.c powerpc/8xx: use modify_instruction_site() 2018-12-19 18:56:32 +11:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c powerpc/44x: use patch_sites for TLB handlers patching 2018-12-19 18:56:32 +11:00
copro_fault.c mm: convert return type of handle_mm_fault() caller to vm_fault_t 2018-08-17 16:20:28 -07:00
dma-noncoherent.c powerpc/dma: split the two __dma_alloc_coherent implementations 2018-12-20 22:21:20 +11:00
drmem.c powerpc/mm/drmem: Fix unexpected flag value in ibm,dynamic-memory-v2 2018-02-23 16:45:51 +11:00
dump_bats.c powerpc/mm: dump block address translation on book3s/32 2018-12-04 19:46:49 +11:00
dump_hashpagetable.c powerpc: remove superflous inclusions of asm/fixmap.h 2018-07-30 22:48:18 +10:00
dump_linuxpagetables-8xx.c powerpc/8xx: change name of a few page flags to avoid confusion 2018-10-14 18:04:09 +11:00
dump_linuxpagetables-book3s64.c powerpc/book3s64: fix dump_linuxpagetables "present" flag 2018-10-20 13:26:47 +11:00
dump_linuxpagetables-generic.c powerpc/mm: add exec protection on powerpc 603 2018-12-19 18:56:32 +11:00
dump_linuxpagetables.c powerpc/mm: Fix linux page tables build with some configs 2018-11-27 11:03:36 +11:00
dump_linuxpagetables.h powerpc/mm: Split dump_pagelinuxtables flag_array table 2018-10-14 18:04:09 +11:00
dump_sr.c powerpc/mm: dump segment registers on book3s/32 2018-12-04 19:45:54 +11:00
fault.c powerpc/mm: Make NULL pointer deferences explicit on bad page faults. 2018-12-20 22:21:20 +11:00
fsl_booke_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hash64_4k.c powerpc/mm/hash: Remove the superfluous bitwise operation when find hpte group 2018-07-24 22:03:17 +10:00
hash64_64k.c powerpc/mm/hash: Remove the superfluous bitwise operation when find hpte group 2018-07-24 22:03:17 +10:00
hash_low_32.S powerpc/book3s/32: Use patch_site to patch hash functions 2018-12-19 18:56:32 +11:00
hash_native_64.c powerpc/64s/hash: Do not use PPC_INVALIDATE_ERAT on CPUs before POWER9 2018-10-04 23:16:53 +10:00
hash_utils_64.c powerpc/64s/hash: Simplify slb_flush_and_rebolt() 2018-10-14 18:04:09 +11:00
highmem.c powerpc/mm: remove warning about ‘type’ being set 2018-08-10 22:12:38 +10:00
hugepage-hash64.c arch/powerpc/mm/hash: validate the pte entries before handling the hash fault 2018-10-03 15:39:59 +10:00
hugetlbpage-book3e.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage-hash64.c arch/powerpc/mm/hash: validate the pte entries before handling the hash fault 2018-10-03 15:39:59 +10:00
hugetlbpage-radix.c powerpc updates for 4.15 2017-11-16 12:47:46 -08:00
hugetlbpage.c powerpc/8xx: Enable 512k hugepage support with HW assistance 2018-12-04 19:45:01 +11:00
init_32.c powerpc/mm/32: Remove the reserved memory hack 2018-04-01 00:47:44 +11:00
init_64.c powerpc/mm: Fallback to RAM if the altmap is unusable 2018-12-09 21:33:21 +11:00
init-common.c powerpc/mm: remove unnecessary test in pgtable_cache_init() 2018-12-04 19:45:01 +11:00
Makefile powerpc/mm: dump block address translation on book3s/32 2018-12-04 19:46:49 +11:00
mem.c powerpc: use mm zones more sensibly 2018-12-20 22:21:20 +11:00
mmap.c exec: pass stack rlimit into mm layout functions 2018-04-11 10:28:37 -07:00
mmu_context_book3s64.c powerpc/mm: Move pte_fragment_alloc() to a common location 2018-12-04 19:45:01 +11:00
mmu_context_hash32.c powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
mmu_context_iommu.c KVM: PPC: Avoid marking DMA-mapped pages dirty in real mode 2018-09-12 08:49:54 +10:00
mmu_context_nohash.c powerpc/mm: define an empty slice_init_new_context_exec() 2018-12-19 18:56:32 +11:00
mmu_context.c powerpc/mm: Extend pte_fragment functionality to PPC32 2018-12-04 19:45:01 +11:00
mmu_decl.h powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32 2018-11-26 22:33:37 +11:00
numa.c powerpc: Use device_type helpers to access the node type 2018-11-26 22:33:37 +11:00
pgtable_32.c powerpc: implement CONFIG_DEBUG_VIRTUAL 2018-12-19 18:56:26 +11:00
pgtable_64.c powerpc/mm: use pte helpers in generic code 2018-10-14 18:04:09 +11:00
pgtable-book3e.c powerpc: handover page flags with a pgprot_t parameter 2018-10-14 18:04:09 +11:00
pgtable-book3s64.c powerpc/mm: Avoid useless lock with single page fragments 2018-12-04 19:45:01 +11:00
pgtable-frag.c powerpc/mm: add helpers to get/set mm.context->pte_frag 2018-12-04 19:45:01 +11:00
pgtable-hash64.c powerpc: handover page flags with a pgprot_t parameter 2018-10-14 18:04:09 +11:00
pgtable-radix.c powerpc/mm/radix: Display if mappings are exec or not 2018-10-20 13:26:47 +11:00
pgtable.c powerpc/mm: add exec protection on powerpc 603 2018-12-19 18:56:32 +11:00
pkeys.c powerpc/pkey: Define functions as static 2018-11-25 17:11:21 +11:00
ppc_mmu_32.c powerpc/book3s/32: fix number of bats in p/v_block_mapped() 2018-12-19 18:56:32 +11:00
slb.c powerpc/mm/64s: Fix preempt warning in slb_allocate_kernel() 2018-11-12 13:22:10 +11:00
slice.c powerpc/mm: fix always true/false warning in slice.c 2018-10-20 13:26:47 +11:00
subpage-prot.c powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
tlb_hash32.c powerpc/sparse: Fix plain integer as NULL pointer warning 2018-05-25 12:04:38 +10:00
tlb_hash64.c powerpc/mm: Add support for handling > 512TB address in SLB miss 2018-03-31 00:10:38 +11:00
tlb_low_64e.S powerpc/fsl: Flush the branch predictor at each kernel entry (64bit) 2018-12-20 22:59:03 +11:00
tlb_nohash_low.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
tlb_nohash.c powerpc/8xx: Enable 512k hugepage support with HW assistance 2018-12-04 19:45:01 +11:00
tlb-radix.c powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
vphn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vphn.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00