|
| on | off | no|
| off | on| no|
|__|___|___|
Signed-off-by: Lianbo Jiang <liji...@redhat.com>
---
arch/x86/include/asm/dmi.h | 14 +-
arch/x86/kernel/acpi/boot.c | 8
arch/x86/
It is convenient to remap the old memory encrypted to the second kernel
by calling ioremap_encrypted().
Signed-off-by: Lianbo Jiang <liji...@redhat.com>
---
arch/x86/include/asm/io.h | 2 ++
arch/x86/mm/ioremap.c | 25 +
2 files changed, 19 insertions(+), 8 del
/makedumpfile
commit e1de103eca8f (A draft for kdump vmcore about AMD SME)
Author: Lianbo Jiang <liji...@redhat.com>
Date: Mon May 14 17:02:40 2018 +0800
Note: This patch can only dump vmcore in the case of SME enabled.
crash-7.2.1: https://github.com/crash-utility/crash.git
commit 1e1bd9c4c1b
tools:
makedumpfile[v1.6.3]: https://github.com/LianboJ/makedumpfile
commit e1de103eca8f (A draft for kdump vmcore about AMD SME)
Author: Lianbo Jiang
Date: Mon May 14 17:02:40 2018 +0800
Note: This patch can only dump vmcore in the case of SME enabled.
crash-7.2.1: https://github.com/crash
When SME is enabled in the first kernel, we will allocate pages
for kdump without encryption in order to be able to boot the
second kernel in the same manner as kexec, which helps to keep
the same code style.
Signed-off-by: Lianbo Jiang
---
kernel/kexec_core.c | 12
1 file changed
In kdump mode, it will copy the device table of IOMMU from the old
device table, which is encrypted when SME is enabled in the first
kernel. So we must remap it in encrypted manner in order to be
automatically decrypted when we read.
Signed-off-by: Lianbo Jiang
---
Some changes:
1. add some
It is convenient to remap the old memory encrypted to the second
kernel by calling ioremap_encrypted().
Signed-off-by: Lianbo Jiang
---
Some changes:
1. remove the sme_active() check in __ioremap_caller().
2. put some logic into the early_memremap_pgprot_adjust() for
early memremap.
arch/x86
In kdump mode, we need to dump the old memory into vmcore file,
if SME is enabled in the first kernel, we must remap the old
memory in encrypted manner, which will be automatically decrypted
when we read from DRAM. It helps to parse the vmcore for some tools.
Signed-off-by: Lianbo Jiang
---
Some
It is convenient to remap the old memory encrypted to the second kernel
by calling ioremap_encrypted().
Signed-off-by: Lianbo Jiang
---
Some changes based on V1:
1. remove the sme_active() check in __ioremap_caller().
arch/x86/include/asm/io.h | 3 +++
arch/x86/mm/ioremap.c | 24
/makedumpfile
commit e1de103eca8f (A draft for kdump vmcore about AMD SME)
Author: Lianbo Jiang
Date: Mon May 14 17:02:40 2018 +0800
Note: This patch can only dump vmcore in the case of SME enabled.
crash-7.2.1: https://github.com/crash-utility/crash.git
commit 1e1bd9c4c1be (Fix for the "bpf&quo
|
| on | off | no|
| off | on| no|
|__|___|___|
Signed-off-by: Lianbo Jiang
---
Some changes based on V1:
1. remove the '#ifdef' stuff throughout this patch.
2. put some logic into the early_memremap_pgprot_adjust
When SME is enabled in the first kernel, we will allocate pages
for kdump without encryption in order to be able to boot the
second kernel in the same manner as kexec, which helps to keep
the same code style.
Signed-off-by: Lianbo Jiang
---
Some changes:
1. remove some redundant codes for crash
akedumpfile
commit e1de103eca8f (A draft for kdump vmcore about AMD SME)
Author: Lianbo Jiang
Date: Mon May 14 17:02:40 2018 +0800
Note: This patch can only dump vmcore in the case of SME enabled.
crash-7.2.1: https://github.com/crash-utility/crash.git
commit 1e1bd9c4c1be (Fix for the "bpf&quo
It is convenient to remap the old memory encrypted to the second
kernel by calling ioremap_encrypted().
Signed-off-by: Lianbo Jiang
---
Some changes:
1. remove the sme_active() check in __ioremap_caller().
2. revert some logic in the early_memremap_pgprot_adjust() for
early memremap and make
into the early_memremap_pgprot_adjust(), which will have an opportunity
to adjust it.
Signed-off-by: Lianbo Jiang
---
arch/x86/mm/ioremap.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index e01e6c6..3c1c8c4 100644
--- a/arch/x86/mm
In kdump mode, we need to dump the old memory into vmcore file,
if SME is enabled in the first kernel, we must remap the old
memory in encrypted manner, which will be automatically decrypted
when we read from DRAM. It helps to parse the vmcore for some tools.
Signed-off-by: Lianbo Jiang
---
Some
In kdump mode, it will copy the device table of IOMMU from the old
device table, which is encrypted when SME is enabled in the first
kernel. So we must remap it in encrypted manner in order to be
automatically decrypted when we read.
Signed-off-by: Lianbo Jiang
---
Some changes:
1. add some
"reserved" in
the /proc/iomem, so we use the strncasecmp() instead of the memcmp() to fix
it.
Signed-off-by: Lianbo Jiang
---
kexec/arch/i386/crashdump-x86.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump
"reserved" in
the /proc/iomem, so we have to fix these cases.
Signed-off-by: Lianbo Jiang
---
kexec/arch/i386/crashdump-x86.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
index 437e8a8..140f45b 100644
--- a/kexec
input_data: 0x00087e91c3b4
input_len: 0x0067fcbd
output: 0x00087d40
output_len: 0x01b6fa90
kernel_total_size: 0x01a9d000
trampoline_32bit: 0x00099000
Decompressing Linux...
Parsing ELF...[---Here the system will hang]
Lianbo Jiang (4):
x86/io
In kdump kernel, it will copy the device table of IOMMU from the old device
table, which is encrypted when SME is enabled in the first kernel. So we
have to remap the old device table with the memory encryption mask.
Signed-off-by: Lianbo Jiang
---
drivers/iommu/amd_iommu_init.c | 14
When SME is enabled in the first kernel, we will allocate unencrypted pages
for kdump in order to be able to boot the kdump kernel like kexec.
Signed-off-by: Lianbo Jiang
---
kernel/kexec_core.c | 12
1 file changed, 12 insertions(+)
diff --git a/kernel/kexec_core.c b/kernel
the SME flag from the first kernel to the kdump kernel, it is really
too expensive to do this.
This patches are only for SME kdump, the patches don't support SEV kdump.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel/crash_dump_encrypt.c | 53
When SME is enabled on AMD machine, the memory is encrypted in the first
kernel. In this case, SME also needs to be enabled in kdump kernel, and
we have to remap the old memory with the memory encryption mask.
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/io.h | 3 +++
arch/x86/mm
R11: 0246 R12:
[ 369.584177] R13: 55602a075260 R14: 0002 R15:
Lianbo Jiang (5):
x86/ioremap: add a function ioremap_encrypted() to remap kdump old
memroy
x86/ioremap: strengthen the logic in early_memremap_pgprot_adjust() to
adj
When SME is enabled in the first kernel, we will allocate unencrypted pages
for kdump in order to be able to boot the kdump kernel like kexec.
Signed-off-by: Lianbo Jiang
---
kernel/kexec_core.c | 12
1 file changed, 12 insertions(+)
diff --git a/kernel/kexec_core.c b/kernel
In kdump kernel, it will copy the device table of IOMMU from the old device
table, which is encrypted when SME is enabled in the first kernel. So we
have to remap the old device table with the memory encryption mask.
Signed-off-by: Lianbo Jiang
---
drivers/iommu/amd_iommu_init.c | 14
the SME flag from the first kernel to the kdump kernel, it is really
too expensive to do this.
This patches are only for SME kdump, the patches don't support SEV kdump.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel/crash_dump_encrypt.c | 53
When SME is enabled on AMD machine, the memory is encrypted in the first
kernel. In this case, SME also needs to be enabled in kdump kernel, and
we have to remap the old memory with the memory encryption mask.
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/io.h | 3 +++
arch/x86/mm
For kdump kernel, when SME is enabled, the acpi table and dmi table will need
to be remapped without the memory encryption mask. So we have to strengthen
the logic in early_memremap_pgprot_adjust(), which makes us have an opportunity
to adjust the memory encryption mask.
Signed-off-by: Lianbo
.
Signed-off-by: Lianbo Jiang <liji...@redhat.com>
---
print_info.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/print_info.c b/print_info.c
index e0e6a27..09e215a 100644
--- a/print_info.c
+++ b/print_info.c
@@ -16,6 +16,8 @@
#include "p
It is convenient to remap the old memory encrypted to the second
kernel by calling ioremap_encrypted().
Signed-off-by: Lianbo Jiang
---
Some changes:
1. remove the sme_active() check in __ioremap_caller().
2. revert some logic in the early_memremap_pgprot_adjust() for
early memremap and make
akedumpfile
commit e1de103eca8f (A draft for kdump vmcore about AMD SME)
Author: Lianbo Jiang
Date: Mon May 14 17:02:40 2018 +0800
Note: This patch can only dump vmcore in the case of SME enabled.
crash-7.2.1: https://github.com/crash-utility/crash.git
commit 1e1bd9c4c1be (Fix for the "bpf&quo
In kdump mode, it will copy the device table of IOMMU from the old
device table, which is encrypted when SME is enabled in the first
kernel. So we must remap it in encrypted manner in order to be
automatically decrypted when we read.
Signed-off-by: Lianbo Jiang
---
Some changes:
1. add some
into the early_memremap_pgprot_adjust(), which will have an opportunity
to adjust it.
Signed-off-by: Lianbo Jiang
---
arch/x86/mm/ioremap.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index e01e6c6..3c1c8c4 100644
--- a/arch/x86/mm
In kdump mode, we need to dump the old memory into vmcore file,
if SME is enabled in the first kernel, we must remap the old
memory in encrypted manner, which will be automatically decrypted
when we read from DRAM. It helps to parse the vmcore for some tools.
Signed-off-by: Lianbo Jiang
---
Some
When SME is enabled in the first kernel, we will allocate pages
for kdump without encryption in order to be able to boot the
second kernel in the same manner as kexec, which helps to keep
the same code style.
Signed-off-by: Lianbo Jiang
---
Some changes:
1. remove some redundant codes for crash
d you need to apply the follow patch before test kdump file_load,
otherwise these patches won't work.
commit <010a93bf97c7> "resource: Fix find_next_iomem_res() iteration
issue"
Lianbo Jiang (2):
x86/kexec_file: add e820 entry in case e820 type string matches to io
reso
in memmap_entry_callback() to match the e820 type and
resource name.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/e820/api.h | 2 ++
arch/x86/kernel/crash.c | 6 +-
arch/x86/kernel/e820.c | 2 +-
kernel/resource.c | 1 +
4 files changed, 9
sit in e820 reserved ranges, thus the early
ioremap code naturally map them as decrypted. If it also has same e820
reserve setup in kdump kernel then it will just work like normal kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/crash.c | 4
1 file changed, 4
For AMD machine with SME feature, makedumpfile tools need to know
whether the crash kernel was encrypted or not. So it is necessary
to write the sme_me_mask to vmcoreinfo.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 2 ++
1 file changed, 2 insertions(+)
diff --git
in memmap_entry_callback() to match the e820 type and
resource name.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/e820/api.h | 2 ++
arch/x86/kernel/crash.c | 6 +-
arch/x86/kernel/e820.c | 2 +-
kernel/resource.c | 1 +
4 files changed, 9
reserved ranges,
thus the early ioremap code naturally map them as decrypted. If it also
has same e820 reserve setup in kdump kernel then it will just work like
normal kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/crash.c | 4
1 file changed, 4 insertions
walks through iomem
resources. Please refer to this commit <010a93bf97c7> "resource: Fix
find_next_iomem_res() iteration issue"
Changes since v4:
1. Improve the patch log, and add kernel log.
Lianbo Jiang (2):
x86/kexec_file: add e820 entry in case e820 type string m
res() iteration issue"
Changes since v4:
1. Improve the patch log, and add kernel log.
Changes since v5:
1. Rewrite these patches log.
Lianbo Jiang (2):
x86/kexec_file: add e820 entry in case e820 type string matches to io
resource name
x86/kexec_file: add reserved e820 ranges to k
ved range is useful in kdump kernel, so it is necessary to
pass the e820 reserved ranges to kdump kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
Changes since v5:
1. Improve the patch log
arch/x86/kernel/crash.c | 4
1 file changed, 4 insertions(+)
diff --git a/arch/x
these redundant type(such as E820_TYPE_RAM/E820_TYPE_
UNUSABLE/E820_TYPE_KERN) in order to add exact e820 reserved type to kdump
kernel e820 table. Thus it also needs an extra checking in memmap_entry_
callback() to match the e820 type and resource name.
Suggested-by: Dave Young
Signed-off-by: Lianbo
resource descriptor 'IORES_DESC_RESERVED'
for the iomem resources search interfaces. It is helpful to exactly
match the reserved resource ranges when walking through iomem resources.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
Changes since v5:
1. Improve the patch log
Changes since v6
ese patches log.
Changes since v6:
1. Modify the [PATCH 1/2], and add the new I/O resource descriptor
'IORES_DESC_RESERVED' for the iomem resources search interfaces.
2. Modify the [PATCH 2/2], and walk through io resource based on the
new descriptor 'IORES_DESC_RESERVED'.
Lianbo Jiang (2):
ved range is useful in kdump kernel, so it is necessary to
pass the e820 reserved ranges to kdump kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
Changes since v5:
1. Improve the patch log
Changes since v6:
1. Modify this patch, and walk through io resource based on the
new d
In kdump kernel, it will copy the device table of IOMMU from the old device
table, which is encrypted when SME is enabled in the first kernel. So the
old device table has to be remapped with the memory encryption mask.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
Acked-by: Joerg Roedel
for
encrypted to make them as before.
ioremap_encrypted()\
ioremap_cache() |
ioremap_prot() |
ioremap_wt()|->__ioremap_caller()
ioremap_wc()|
ioremap_uc() |
ioremap_nocache() /
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
Changes
l_size: 0x01a9d000
trampoline_32bit: 0x00099000
Decompressing Linux...
Parsing ELF...[---Here the system will hang]
Lianbo Jiang (4):
x86/ioremap: add a function ioremap_encrypted() to remap kdump old
memory
kexec: allocate decrypted control pages for kdump in case
When SME is enabled in the first kernel, it needs to allocate decrypted
pages for kdump, because when it boots to the kdump kernel, these pages
won't be accessed encrypted at the initial stage, in order to boot the
kdump kernel in the same manner as originally booted.
Signed-off-by: Lianbo Jiang
to consider how to pass the SME flag from the first kernel to the kdump
kernel, it is really too expensive to do this.
This patches are only for SME kdump, the patches don't support SEV kdump.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
Changes since v7:
1. Delete a file arch/x86/kernel
for
encrypted to make them as before.
ioremap_encrypted()\
ioremap_cache() |
ioremap_prot() |
ioremap_wt()|->__ioremap_caller()
ioremap_wc()|
ioremap_uc() |
ioremap_nocache() /
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
Changes
ta: 0x00087e91c3b4
input_len: 0x0067fcbd
output: 0x00087d40
output_len: 0x01b6fa90
kernel_total_size: 0x01a9d000
trampoline_32bit: 0x00099000
Decompressing Linux...
Parsing ELF...[---Here the system will hang]
Lianbo Jiang (4):
x86/ioremap:
to consider how to pass the SME flag from the first kernel to the kdump
kernel, it is really too expensive to do this.
This patches are only for SME kdump, the patches don't support SEV kdump.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
Changes since v7:
1. Delete a file arch/x86/kernel
In kdump kernel, it will copy the device table of IOMMU from the old device
table, which is encrypted when SME is enabled in the first kernel. So the
old device table has to be remapped with the memory encryption mask.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
Acked-by: Joerg Roedel
When SME is enabled in the first kernel, it needs to allocate decrypted
pages for kdump, because when it boots to the kdump kernel, these pages
won't be accessed encrypted at the initial stage, in order to boot the
kdump kernel in the same manner as originally booted.
Signed-off-by: Lianbo Jiang
in memmap_entry_callback() to match the e820 type and
resource name.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/e820/api.h | 2 ++
arch/x86/kernel/crash.c | 6 +-
arch/x86/kernel/e820.c | 2 +-
kernel/resource.c | 1 +
4 files changed, 9
, these ranges sit in e820 reserved ranges, thus the early
ioremap code naturally map them as unencrypted. If we also have same e820
reserve setup in kdump kernel then it will just work like normal kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/crash.c | 5 +
1 file
e for e820 reserved ranges.
2. Modified the invalid SOB chain issue.
Lianbo Jiang (3):
resource: fix an error which walks through iomem resources
x86/kexec_file: add e820 entry in case e820 type string matches to io
resource name
x86/kexec_file: add reserved e820 ranges to kdump kernel
A and B when we walk through the
whole tree, but it only gets the resource A, the resource B is missed.
Signed-off-by: Lianbo Jiang
---
kernel/resource.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/resource.c b/kernel/resource.c
index 30e1bc68503b..f5d9fc70a04c 100644
--- a/ke
1a9d000
trampoline_32bit: 0x00099000
Decompressing Linux...
Parsing ELF...[---Here the system will hang]
Lianbo Jiang (4):
x86/ioremap: add a function ioremap_encrypted() to remap kdump old
memory
kexec: allocate unencrypted control pages for kdump in case SME is
ke them an before.
ioremap_encrypted()\
ioremap_cache() |
ioremap_prot() |
ioremap_wt()|->__ioremap_caller()
ioremap_wc()|
ioremap_uc() |
ioremap_nocache() /
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
arch/x86/include/asm/io
ved ranges.
Lianbo Jiang (3):
resource: fix an error which walks through iomem resources
x86/kexec_file: add e820 entry in case e820 type string matches to io
resource name
x86/kexec_file: add reserved e820 ranges to kdump kernel e820 table
arch/x86/include/asm/e820/api.h | 2 ++
arch/
these ranges sit in e820 reserved ranges thus the early
ioremap code naturally map them as unencrypted. So if we have same e820
reserve setup in kdump kernel then it will just work like normal kernel.
Signed-off-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/crash.c | 5 +
1 file
A and B when we walk through the
whole tree, but it only gets the resource A, the resource B is missed.
Signed-off-by: Dave Young
Signed-off-by: Lianbo Jiang
---
kernel/resource.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/resource.c b/kernel/resource.c
index 30e1bc68503b..f5d9
() to match the e820 type and resource
name.
Signed-off-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/x86/include/asm/e820/api.h | 2 ++
arch/x86/kernel/crash.c | 6 +-
arch/x86/kernel/e820.c | 2 +-
kernel/resource.c | 1 +
4 files changed, 9 insertions(+), 2
When SME is enabled in the first kernel, we will allocate unencrypted pages
for kdump in order to be able to boot the kdump kernel like kexec.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
kernel/kexec_core.c | 12
1 file changed, 12 insertions(+)
diff --git a/kernel
the SME flag from the first kernel to the kdump kernel, it is really
too expensive to do this.
This patches are only for SME kdump, the patches don't support SEV kdump.
Signed-off-by: Lianbo Jiang
Reviewed-by: Tom Lendacky
---
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel
address.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c
b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..bc4108096b18 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86
in this
document.
3. Correct some of the mistakes in this document.
*** BLURB HERE ***
Lianbo Jiang (2):
kdump: add the vmcoreinfo documentation
kdump,vmcoreinfo: Export the value of sme mask to vmcoreinfo
Documentation/kdump/vmcoreinfo.txt | 500 +
arch/x86/kernel
-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
Documentation/kdump/vmcoreinfo.txt | 500 +
1 file changed, 500 insertions(+)
create mode 100644 Documentation/kdump/vmcoreinfo.txt
diff --git a/Documentation/kdump/vmcoreinfo.txt
b/Documentation/kdump/vmcoreinfo.txt
new
to vmcoreinfo
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=65f750e5457aef9a8085a99d613fea0430303e93
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=f263245a0ce2c4e23b89a58fa5f7dfc048e11929
Lianbo Jiang (2):
Makedumpfile: add a new variable 'sme_mask
It will be used to store the sme mask for crashed kernel, the
sme_mask denotes whether the old memory is encrypted or not.
Signed-off-by: Lianbo Jiang
---
makedumpfile.c | 3 +++
makedumpfile.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index 8923538
For AMD machine with SME feature, if SME is enabled in the first
kernel, the crashed kernel's page table(pgd/pud/pmd/pte) contains
the memory encryption mask, so makedumpfile needs to remove the
memory encryption mask to obtain the true physical address.
Signed-off-by: Lianbo Jiang
---
arch
-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
Documentation/kdump/vmcoreinfo.txt | 456 +
1 file changed, 456 insertions(+)
create mode 100644 Documentation/kdump/vmcoreinfo.txt
diff --git a/Documentation/kdump/vmcoreinfo.txt
b/Documentation/kdump/vmcoreinfo.txt
address.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 14 ++
1 file changed, 14 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c
b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..1860fe24117d 100644
--- a/arch/x86/kernel/machine_kexec_64.c
comment for the code.
3. Improve the patch log.
4. Add the vmcoreinfo documentation.
Changes since v2:
1. Improve the vmcoreinfo document, add more descripts for these
variables exported.
2. Fix spelling errors in the document.
Lianbo Jiang (2):
kdump: add the vmcoreinfo documentation
kdump
ot present at all in kdump kernel e820 table, those reserved regions are
considered as encrypted, it goes wrong.
The e820 reserved range is useful in kdump kernel, so it is necessary to
pass the e820 reserved ranges to kdump kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/
and also cause some
errors. Because the 'E820_TYPE_RESERVED' type is converted to the new
descriptor 'IORES_DESC_RESERVED' instead of 'IORES_DESC_NONE', it has been
changed.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/ia64/kernel/efi.c | 4
arch/x86/kernel/e820.c | 2
tor 'IORES_DESC_RESERVED'.
3. Update patch log.
Changes since v7:
1. Improve patch log.
2. Improve this function __ioremap_check_desc_other().
3. Modify code comment in the __ioremap_check_desc_other()
Lianbo Jiang (2):
resource: add the new I/O resource descriptor 'IORES_DESC_RESERVED'
x86/kexec_
comment for the code.
3. Improve the patch log.
4. Add the vmcoreinfo documentation.
Lianbo Jiang (2):
kdump: add the vmcoreinfo documentation
kdump,vmcoreinfo: Export the value of sme mask to vmcoreinfo
Documentation/kdump/vmcoreinfo.txt | 400 +
arch/x86/kernel
-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
Documentation/kdump/vmcoreinfo.txt | 400 +
1 file changed, 400 insertions(+)
create mode 100644 Documentation/kdump/vmcoreinfo.txt
diff --git a/Documentation/kdump/vmcoreinfo.txt
b/Documentation/kdump/vmcoreinfo.txt
address.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 14 ++
1 file changed, 14 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c
b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..1860fe24117d 100644
--- a/arch/x86/kernel/machine_kexec_64.c
and also updates these codes relates to 'IORES_DESC_NONE'.
2. Modify the [PATCH 2/2], and walk through io resource based on the
new descriptor 'IORES_DESC_RESERVED'.
3. Update patch log.
Lianbo Jiang (2):
resource: add the new I/O resource descriptor 'IORES_DESC_RESERVED'
x86/kexec_file: add reserved e8
to 'IORES_DESC_NONE' have
been updated.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
arch/ia64/kernel/efi.c | 4
arch/x86/kernel/e820.c | 2 +-
arch/x86/mm/ioremap.c | 9 -
include/linux/ioport.h | 1 +
kernel/resource.c | 6 +++---
5 files changed, 17 insertions(+), 5
ved ranges are
not present at all in kdump kernel e820 table, those reserved regions are
considered as encrypted, it goes wrong.
The e820 reserved range is useful in kdump kernel, so it is necessary to
pass the e820 reserved ranges to kdump kernel.
Suggested-by: Dave Young
Signed-off-by: Lianbo Jiang
---
This document lists some variables that export to vmcoreinfo, and briefly
describles what these variables indicate. It should be instructive for
many people who do not know the vmcoreinfo.
Suggested-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
Documentation/kdump/vmcoreinfo.txt | 500
. Improve patch log.
Lianbo Jiang (2):
kdump: add the vmcoreinfo documentation
kdump,vmcoreinfo: Export the value of sme mask to vmcoreinfo
Documentation/kdump/vmcoreinfo.txt | 500 +
arch/x86/kernel/machine_kexec_64.c | 3 +
2 files changed, 503 insertions
the true physical address.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c
b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..bc4108096b18 100644
--- a/arch/x86/kernel/machine_kexec_64
it become more
clear and easy to read.
2. Move sme_mask comments in the code to the vmcoreinfo document.
3. Improve patch log.
Lianbo Jiang (2):
kdump: add the vmcoreinfo documentation
kdump,vmcoreinfo: Export the value of sme mask to vmcoreinfo
Documentation/kdump/vmcoreinfo.txt | 513
-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
Documentation/kdump/vmcoreinfo.txt | 513 +
1 file changed, 513 insertions(+)
create mode 100644 Documentation/kdump/vmcoreinfo.txt
diff --git a/Documentation/kdump/vmcoreinfo.txt
b/Documentation/kdump/vmcoreinfo.txt
new
address.
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/machine_kexec_64.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/machine_kexec_64.c
b/arch/x86/kernel/machine_kexec_64.c
index 4c8acdfdc5a7..bc4108096b18 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86
For AMD machine with SME feature, if SME is enabled in the first
kernel, the crashed kernel's page table(pgd/pud/pmd/pte) contains
the memory encryption mask, so makedumpfile needs to remove the
memory encryption mask to obtain the true physical address.
Signed-off-by: Lianbo Jiang
---
Changes
and also cause some
errors. Because the 'E820_TYPE_RESERVED' type is converted to the new
descriptor 'IORES_DESC_RESERVED' instead of 'IORES_DESC_NONE', it has been
changed.
Suggested-by: Borislav Petkov
Signed-off-by: Lianbo Jiang
---
arch/x86/kernel/e820.c | 2 +-
include/linux/ioport.h | 1
64.(Borislav's suggestion)
2. Change the examination condition to the 'IORES_DESC_ACPI_*'.
3. Modify the signature. This patch(add the new I/O resource
descriptor 'IORES_DESC_RESERVED') was suggested by Boris.
Lianbo Jiang (3):
x86/mm: Change the examination condition to avoid confusion
resource: a
Following the commit <0e4c12b45aa8> ("x86/mm, resource: Use
PAGE_KERNEL protection for ioremap of memory pages"), here
it is really checking for the 'IORES_DESC_ACPI_*' values.
Therefore, it is necessary to change the examination condition
to avoid confusion.
Signed-off-
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