Jason Gunthorpe
d2286457bd
mm: always have io_remap_pfn_range() set pgprot_decrypted() ...
commit f8f6ae5d077a9bdaf5cbf2ac960a5d1a04b47482 upstream.
The purpose of io_remap_pfn_range() is to map IO memory, such as a
memory mapped IO exposed through a PCI BAR. IO devices do not
understand encryption, so this memory must always be decrypted.
Automatically call pgprot_decrypted() as part of the generic
implementation.
This fixes a bug where enabling AMD SME causes subsystems, such as RDMA,
using io_remap_pfn_range() to expose BAR pages to user space to fail.
The CPU will encrypt access to those BAR pages instead of passing
unencrypted IO directly to the device.
Places not mapping IO should use remap_pfn_range().
Fixes: aca20d5462https://lkml.kernel.org/r/0-v1-025d64bdf6c4+e-amd_sme_fix_jgg@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-10 12:37:27 +01:00
fls: change parameter to unsigned int
2019-01-04 13:13:46 -08:00
lib/vdso: Make __arch_update_vdso_data() logic understandable
2020-03-05 16:43:49 +01:00
mm: make the __PAGETABLE_PxD_FOLDED defines non-empty
2018-11-02 08:31:52 +01:00
include/asm-generic/5level-fixup.h: fix variable 'p4d' set but not used
2019-08-13 16:06:52 -07:00
locking/atomics: Check atomic headers with sha1sum
2019-02-13 08:07:31 +01:00
locking/atomics: Check atomic headers with sha1sum
2019-02-13 08:07:31 +01:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
locking/atomic: Use s64 for atomic64
2019-06-03 12:32:56 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
asm-generic, x86: add bitops instrumentation for KASAN
2019-07-12 11:05:42 -07:00
bug: move WARN_ON() "cut here" into exception handler
2019-09-25 17:51:41 -07:00
asm-generic/nds32: don't redefine cacheflush primitives
2020-01-17 19:48:43 +01:00
asm-generic: Move common compat types to asm-generic/compat.h
2018-08-29 15:42:20 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
asm-generic changes for v5.4
2019-09-17 14:30:30 -07:00
dma-mapping: bypass indirect calls for dma-direct
2018-12-13 21:06:18 +01:00
error-injection: Consolidate override function definition
2019-08-07 13:52:43 +01:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
module: Remove leftover '#undef' from export header
2019-09-12 15:29:46 +02:00
mm: introduce common STRUCT_PAGE_MAX_SHIFT define
2018-12-14 15:05:45 -08:00
binfmt_flat: remove the persistent argument from flat_get_addr_from_rp
2019-06-24 09:16:47 +10:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
futex: Cleanup generic SMP variant of arch_futex_atomic_op_inuser()
2019-07-22 11:20:10 +02:00
asm-generic: fix -Wtype-limits compiler warnings
2019-08-03 07:02:01 -07:00
hugetlb: allow to free gigantic pages regardless of the configuration
2019-05-14 09:47:47 -07:00
asm-generic: don't provide __ioremap
2019-08-30 21:46:27 +02:00
iomap: introduce io{read|write}64_{lo_hi|hi_lo}
2019-01-22 13:39:59 +01:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
asm-generic: make simd.h a mandatory include/asm header
2019-07-31 21:29:24 +10:00
x86/mpx, mm/core: Fix recursive munmap() corruption
2019-05-09 10:37:17 +02:00
asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()
2020-07-29 10:18:40 +02:00
asm-generic/mmiowb: Add generic implementation of mmiowb() tracking
2019-04-08 11:59:39 +01:00
x86/Hyper-V: Report crash data in die() when panic_on_oops is set
2020-04-23 10:36:24 +02:00
asm-generic/page.h: fix typo in #error text requiring a real asm/page.h
2019-02-22 21:53:25 +01:00
percpu: remove PER_CPU_DEF_ATTRIBUTES macro
2018-10-31 08:54:14 -07:00
mm: treewide: clarify pgtable_page_{ctor,dtor}() naming
2019-09-26 10:10:44 -07:00
x86/mm: Validate kernel_physical_mapping_init() PTE population
2018-12-05 09:03:06 +01:00
x86/mm: Validate kernel_physical_mapping_init() PTE population
2018-12-05 09:03:06 +01:00
mm: make the __PAGETABLE_PxD_FOLDED defines non-empty
2018-11-02 08:31:52 +01:00
x86/mm: Validate kernel_physical_mapping_init() PTE population
2018-12-05 09:03:06 +01:00
mm: always have io_remap_pfn_range() set pgprot_decrypted()
2020-11-10 12:37:27 +01:00
sched/preempt: Use CONFIG_PREEMPTION where appropriate
2019-07-31 19:03:34 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
locking/lockdep: check for freed initmem in static_obj()
2019-04-29 10:47:10 +02:00
treewide: remove SPDX "WITH Linux-syscall-note" from kernel-space headers
2019-05-14 19:52:48 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193
2019-05-30 11:29:21 -07:00
mm/mmu_gather: invalidate TLB correctly on batch allocation failure and flush
2020-02-11 04:35:42 -08:00
include/asm-generic/topology.h: guard cpumask_of_node() macro argument
2020-06-03 08:21:27 +02:00
asm-generic: optimize generic uaccess for 8-byte loads and stores
2019-04-23 21:51:41 +02:00
bpf: Prevent .BTF section elimination
2020-10-14 10:32:58 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47
2019-05-24 17:27:13 +02:00
d2286457bd