> -Original Message-
> From: Julien Grall
> Sent: Tuesday, June 7, 2022 5:13 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk ; Andrew Cooper
> ; George Dunlap ;
> Jan Beuli
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, June 7, 2022 3:58 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei
> Liu ; xen-devel@lists.xenproject.org
> Subject: Re
Hi guys
> -Original Message-
> From: Penny Zheng
> Sent: Tuesday, November 16, 2021 1:25 PM
> To: Penny Zheng
> Cc: nd
> Subject: [PATCH v3 01/10] xen: introduce
> XEN_DOMCTL_CDF_INTERNAL_directmap
>
> From: Stefano Stabellini
>
> This commit i
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, December 7, 2021 5:28 PM
> To: Penny Zheng
> Cc: Wei Chen ; Bertrand Marquis
> ; Michal Orzel ;
> jul...@xen.org; xen-devel@lists.xenproject.org
> Subject: Re: [PATCH
is_domain_direct_mapped.
For now, direct-map is only available when statically allocated memory is
used for the domain, that is, "xen,static-mem" must be also defined in the
domain configuration.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v2 changes
- remove the in
ocate bit 0 as CDF_privileged: whether a domain is privileged or not.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v4 changes:
- new commit
---
xen/arch/arm/domain_build.c | 4 ++--
xen/arch/x86/setup.c| 2 +-
xen/common/domain.c | 10 +-
xen/comm
new helper "is_domain_use_host_layout()"
- explain why vpl011 initialization before creating its device tree node
- error out if the domain is direct-mapped and the IRQ is not found
- harden the code and add a check/comment when the hardware UART region
is smaller than CUEST_VPL011_S
extracts common codes into two new helpers
parse_static_mem_prop and acquire_static_memory_bank.
Signed-off-by: Penny Zheng
---
v3 changes:
- new commit to move the split off of the code outside in a separate patch
---
v4 changes:
- use mfn_eq() instead, because it is the only value used to indicate
t memory layout
This commit introduces a new helper assign_static_memory_11 to allocate
static memory as guest RAM for direct-map domain.
Signed-off-by: Penny Zheng
---
v2 changes:
- split the common codes into two helpers: parse_static_mem_prop and
acquire_static_memory_bank to deduce complexity
Helper allocate_static_memory is not meant to be reachable when built with
!CONFIG_STATIC_MEMORY, so this commit adds ASSERT_UNREACHABLE in it to catch
potential misuse.
Signed-off-by: Penny Zheng
Acked-by: Julien Grall
---
v3 changes:
- new commit
---
xen/arch/arm/domain_build.c | 1 +
1 file
: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v3 changes:
- new commit, split from the original "[PATCH v2 2/6] xen/arm: introduce
direct-map for domUs"
---
v4 changes
- explain briefly in the commit message why we want to do device assignment
without IOMMU.
---
xen/arch/arm/domain_b
This commit gates function make_gicv3_domU_node with CONFIG_GICV3.
Signed-off-by: Penny Zheng
---
v4 changes:
- remove ASSERT_UNREACHABLE() to avoid breaking compilation on prod build with
CONFIG_GICV3=n
---
xen/arch/arm/domain_build.c | 4
1 file changed, 4 insertions(+)
diff --git a/xen
address as vgic_dist_base, other than the dbase. So this patch also introduces
vgic_dist_base/vgic_cpu_base accessor to access correct distributor base
address/cpu interface base address on varied scenarios,
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v2 changes
- combine all
future,
this patch introduces a new helper "domain_use_host_layout()" that
wraps both two check "is_domain_direct_mapped(d) || is_hardware_domain(d)"
for more flexible usage.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v2 changes:
- remove redistributor
number: instead of always using
GUEST_VPL011_SPI, try to reuse the physical SPI number if possible.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v2 changes:
- explain why vpl011 initialization before creating its device tree node
- error out if the domain is direct-mapped and
From: Stefano Stabellini
This commit creates a new doc to document how to do passthrough without IOMMU.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
docs/misc/arm/passthrough-noiommu.txt | 52 +++
1 file changed, 52 insertions(+)
create mode
Hi Jan
Sorry for the late reply.
> -Original Message-
> From: Jan Beulich
> Sent: Friday, January 7, 2022 10:22 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject:
Thanks for the reminder!
I’ll send the updated version ASAP :)
Thanks,
Penny
> 在 2023年11月30日，18:09，Michal Orzel 写道：
>
> Hi Penny,
>
>> On 11/09/2023 12:04, Penny Zheng wrote:
>>
>>
>> Hi Michal
>>
>>> On 2023/9/11 17:01, Michal Orze
Function parameters {addr_cells,size_cells} are stale parameters in
assign_shared_memory, so we shall remove them.
Signed-off-by: Penny Zheng
Reviewed-by: Michal Orzel
---
v1 -> v2:
- new commit
---
v2 -> v3:
rebase and no change
---
v3 -> v4:
rebase and no change
---
v4 -> v5:
r
describing shared memory regions in guest address space, is created in "kinfo"
when dealing with domain information.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- As the original "struct shm_membank" was making reserving memory more
complex and actually memory infor
DOC[2]
All above objects have been divided into two parts to complete. And this
patch serie is PART I.
[1] https://lore.kernel.org/all/20220908135513.1800511-1-penny.zh...@arm.com/
[2]
https://www.kernel.org/doc/Documentation/devicetree/bindings/reserved-memory/xen%2Cshared-memory.txt
Penny Zheng
..).
Also, to make codes tidy and clear, we extract codes about parsing
"xen,shared-mem" property from function "process_shm" and move them into
a new helper "parse_shm_property".
Signed-off-by: Penny Zheng
---
v1 -> v2
- In order to get allocated banked host memo
Putting overlap and overflow checking in the loop is causing repetitive
operation, so this commit extracts both checking outside the loop.
Signed-off-by: Penny Zheng
---
v6:
new commit
---
xen/arch/arm/static-shmem.c | 39 +++--
1 file changed, 16 insertions
rs.
This commit defines callback "retrieve_meminfo" for data structure
"struct meminfo".
Signed-off-by: Penny Zheng
---
v1 -> v2:
- define a set of MACRO helpers to access common fields in data structure of
"meminfo" type. "struct meminfo" is one of them, a
use "remove_shm_from_rangeset" to remove static shm.
For direct-map domain with iommu off, as static shm has already been taken
care of through reserved memory banks, we do nothing.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- error out non-zero res before rem
m_memnode" as function parameter to replace them all, to make codes more
clear and tidy.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- combine commits 4 - 6 in Serie 1
- Adapt to changes of introducing "struct shm_memnode"
---
v2 -> v3
- fix infinite loop bug and bad indentation
references for foreign superpages.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- rebase and no change
---
v3 -> v4:
rebase and no change
---
v4 -> v5:
rebase and no change
---
xen/arch/arm/mmu/p2m.c | 58 +++---
1 file
em-1",
not "0x1".
Signed-off-by: Penny Zheng
---
docs/misc/arm/device-tree/booting.txt | 52 ---
1 file changed, 39 insertions(+), 13 deletions(-)
diff --git a/docs/misc/arm/device-tree/booting.txt
b/docs/misc/arm/device-tree/booting.txt
index bbd955e9c2..ac4bad6
Static shared memory region shall be described both under /memory and
/reserved-memory.
We introduce export_shm_memory_node() to create another /memory node to
contain the static shared memory ranges.
Signed-off-by: Penny Zheng
---
v3 -> v4:
new commit
---
v4 -> v5:
rebase and no c
insert the shm node along with the copying.
And avoiding duplication, we add a checking before make_resv_memory_node().
Signed-off-by: Penny Zheng
---
v3 -> v4:
new commit
---
v4 -> v5:
rebase and no change
---
xen/arch/arm/domain_build.c | 27 ++---
xen/ar
Hi Michal
On 2023/12/6 19:35, Michal Orzel wrote:
Hi Penny,
On 06/12/2023 10:06, Penny Zheng wrote:
Putting overlap and overflow checking in the loop is causing repetitive
operation, so this commit extracts both checking outside the loop.
Signed-off-by: Penny Zheng
In general the patch
sical
== physical) domains.
This document is partly based on Stefano Stabellini's patch serie v1:
[direct-map DomUs](
https://lists.xenproject.org/archives/html/xen-devel/2020-04/msg00707.html).
Signed-off-by: Penny Zheng
---
For the part regarding allocating 1:1 direct-map domains with us
Hi Julien
Thanks for the nice and detailed comments. (*^▽^*)
Here are the replies:
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, December 8, 2020 5:07 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Cc: Bertrand Marquis
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, January 5, 2021 8:41 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Cc: Bertrand Marquis ; Kaly Xin
> ; Wei Chen ; nd ;
> Paul Durrant ; famzh...@amazon.com
> Subjec
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, September 1, 2021 4:57 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Cc: Bertrand Marquis ; Wei Chen
> ; nd
> Subject: Re: [PATCH v5 1/7] xen/a
Hi Julien and Stefano
> -Original Message-
> From: Julien Grall
> Sent: Friday, September 3, 2021 3:42 PM
> To: Stefano Stabellini
> Cc: Penny Zheng ; xen-devel@lists.xenproject.org;
> Bertrand Marquis ; Wei Chen
> ; nd
> Subject: Re: [PATCH v5
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Friday, September 3, 2021 5:31 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; sstabell...@kernel.org; jul...@xen.org;
> Bertrand Marquis ; Wei Chen
> ; nd
> Subject: Re: [PATCH v5
this issue, I could loose the "grep check", instead trying to grep the
COMPLETE option string("-march=armv8-r"), only partial(armv8-r) is
enough. But, hmmm, the way of greping output message to check is kinds of
reliable, IMO, since there is no standard for that.
What do you suggest?
Cheers
--
Penny Zheng
This commit creates a new helper device_tree_get_meminfo to iterate over a
device tree property to get memory info, like "reg".
Signed-off-by: Penny Zheng
---
xen/arch/arm/bootfdt.c | 83 --
1 file changed, 47 insertions(+), 36 deletions(-)
di
e format
- use PFN_DOWN(...)
- provide a stub allocate_static_memory implementation for
!CONFIG_STATIC_MEMORY
- add a statement to clarify the binding between the "memory" property
and "xen,static-mem"
---
TODO:
- reboot domain on static allocation
- Implement all memory-ops(hype
be potentially non-trivial. As the function is internal, pass the MFN and
the page. They are both expected to match.
Signed-off-by: Penny Zheng
Acked-by: Jan Beulich
Reviewed-by: Julien Grall
---
xen/common/page_alloc.c | 89 ++---
1 file changed, 48
from
heap, this patch introduces a new page flag PGC_reserved, then mark pages of
static memory PGC_reserved when initializing them.
Signed-off-by: Penny Zheng
---
xen/common/page_alloc.c | 118 ++-
xen/include/asm-arm/mm.h | 3 +
xen/include/xen/mm.h
a new CONFIG_STATIC_MEMORY option to wrap all
static-allocation-related code.
Put asynchronously scrubbing pages of static memory in TODO list.
Signed-off-by: Penny Zheng
---
xen/arch/arm/setup.c| 27 +++
xen/common/Kconfig | 13 +
xen/common
introduce
a new function guest_physmap_add_pages to cope with adding guest RAM p2m
mapping with nr_pages.
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 161 +++-
xen/arch/arm/p2m.c | 7 +-
xen/include/asm-arm/p2m.h | 11 +++
3 files changed
ank"
to tell whether the memory bank is reserved as the whole hardware resource,
or bind to a xen domain node, through "xen,static-mem"
Signed-off-by: Penny Zheng
---
docs/misc/arm/device-tree/booting.txt | 42 +++
xen/arch/arm/bootfdt.c| 3
In order to deal with the trouble of count-to-order conversion when page number
is not in a power-of-two, this commit re-define assign_pages for nr pages and
introduces a new helper assign_page for original page with a single order.
Signed-off-by: Penny Zheng
---
xen/arch/x86/pv/dom0_build.c
Hi Jan
> -Original Message-
> From: Stefano Stabellini
> Sent: Thursday, September 9, 2021 7:58 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; sstabell...@kernel.org; jul...@xen.org;
> Bertrand Marquis ; Wei Chen
> ; jbeul...@suse.com
> Subject: Re
Hi Jan and Stefano
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, September 9, 2021 5:06 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject: Re: [PATC
TODO:
- reboot domain on static allocation
- Implement all memory-ops(hypercalls) regarding domain on static allocation
to balloon in/out memory
- asynchronously scrubbing PGC_reserved pages
Penny Zheng (7):
xen/arm: introduce new helper device_tree_get_meminfo
xen/arm: introduce d
This commit creates a new helper device_tree_get_meminfo to iterate over a
device tree property to get memory info, like "reg".
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
xen/arch/arm/bootfdt.c | 83 --
1 file changed, 47
ank"
to tell whether the memory bank is reserved as the whole hardware resource,
or bind to a xen domain node, through "xen,static-mem"
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
docs/misc/arm/device-tree/booting.txt | 42 +++
xen/arch/arm/
be potentially non-trivial. As the function is internal, pass the MFN and
the page. They are both expected to match.
Signed-off-by: Penny Zheng
Acked-by: Jan Beulich
Reviewed-by: Julien Grall
---
xen/common/page_alloc.c | 89 ++---
1 file changed, 48
from
heap, this patch introduces a new page flag PGC_reserved, then mark pages of
static memory PGC_reserved when initializing them.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
xen/common/page_alloc.c | 118 ++-
xen/include/asm-arm/mm.h
a new CONFIG_STATIC_MEMORY option to wrap all
static-allocation-related code.
Put asynchronously scrubbing pages of static memory in TODO list.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
xen/arch/arm/setup.c| 27 +++
xen/common/Kconfig | 13
, such that the compiler would point out that adjustments at call
sites are needed.
Signed-off-by: Penny Zheng
---
xen/arch/x86/pv/dom0_build.c | 2 +-
xen/common/grant_table.c | 2 +-
xen/common/memory.c | 6 +++---
xen/common/page_alloc.c | 23 ++-
xen
introduce
a new function guest_physmap_add_pages to cope with adding guest RAM p2m
mapping with nr_pages.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
xen/arch/arm/domain_build.c | 161 +++-
xen/arch/arm/p2m.c | 7 +-
xen/include/asm
Hi Jan
Sorry for the broken.
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, September 15, 2021 9:56 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject
al variable "tainted" to "pg_tainted"
to tell the difference from the global variable of the same name.
Signed-off-by: Penny Zheng
---
xen/common/page_alloc.c | 15 ++-
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/xen/common/page_alloc.c b/
uot;tainted" to "pg_offlined".
Coverity ID: 1491872
Fixes: 540a637c3410780b519fc055f432afe271f642f8
Signed-off-by: Penny Zheng
---
v2 changes:
- rename local variable "tainted" to "pg_offlined", and make it bool
---
xen/common/page_alloc.c | 15 ++--
covers parts of it, which are 1:1 direct-map memory map.
Other features will be delievered through different patch series.
See https://lists.xenproject.org/archives/html/xen-devel/2021-09/msg00855.html
for Domain on Static Allocation.
Penny Zheng (1):
xen/arm: device assignment on 1:1 dire
From: Stefano Stabellini
Add a field in struct vgic_dist to store the cpu interface base address,
similar to the existing dbase field.
Use the field in vgic_v2_domain_init, instead of original local variable.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/vgic
xen_domctl_createdomain for internal Xen usage.
Allocate bit 16 for XEN_DOMCTL_INTERNAL_ispriv: whether a domain is
privileged or not.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
CC: andrew.coop...@citrix.com
CC: jbeul...@suse.com
CC: George Dunlap
CC: Ian Jackson
CC: Wei Liu
CC: "
m" is defined in the domain configuration.
This commit also re-implements allocate_static_memory to allocate static memory
as guest RAM for 1:1 direct-map domain.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
docs/misc/arm/device-tree/booting.txt | 9 ++
xen/arch/arm/domai
: Stefano Stabellini
Signed-off-by: Penny Zheng
CC: andrew.coop...@citrix.com
CC: jbeul...@suse.com
CC: George Dunlap
CC: Ian Jackson
CC: Wei Liu
CC: "Roger Pau Monné"
---
xen/arch/arm/domain.c| 1 +
xen/arch/arm/domain_build.c | 2 +-
xen/include/asm-arm/domain.h | 9
provide the
updated addresses.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/vgic-v2.c | 16
xen/arch/arm/vgic/vgic-v2.c| 17 +
xen/include/asm-arm/new_vgic.h | 4 ++--
xen/include/asm-arm/vgic.h | 4 ++--
4 files
to provide
the updated addresses.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 32
xen/arch/arm/vgic-v3.c | 10 +-
xen/include/asm-arm/vgic.h | 6 +++---
3 files changed, 32 insertions(+), 16
From: Stefano Stabellini
Introduce accessors for vgic dist, cpu, and rdist base addresses, on
all gic types.
Use the accessors when making gic node for device tree of domU.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c| 21
the virtual IRQ number: instead of always using
GUEST_VPL011_SPI, try to reuse the physical SPI number if possible.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 34 +++---
xen/arch/arm/vpl011.c| 34
From: Stefano Stabellini
In vgic_v2_map_resources, use the new vgic_cpu_base field of struct
vgic_dist instead of original local variable.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
xen/arch/arm/vgic/vgic-v2.c | 10 +-
1 file changed, 5 insertions(+), 5
ned-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 12
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index c92e510ae7..9a9d2522b7 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@
From: Stefano Stabellini
Make sure to start with a WARNING about security.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
docs/misc/arm/passthrough-noiommu.txt | 54 +++
1 file changed, 54 insertions(+)
create mode 100644 docs/misc/arm/passthrough
1] https://lore.kernel.org/all/20220908135513.1800511-1-penny.zh...@arm.com/
[2]
https://www.kernel.org/doc/Documentation/devicetree/bindings/reserved-memory/xen%2Cshared-memory.txt
Penny Zheng (8):
xen/arm: remove stale addr_cells/size_cells in assign_shared_memory
xen/arm: re-define a set
Function parameters {addr_cells,size_cells} are stale parameters in
assign_shared_memory, so we shall remove them.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
rebase and no change
---
xen/arch/arm/domain_build.c | 2 --
1 file changed, 2 deletions(-)
diff --git
tructure that contains SHMID and a "struct membank membank"
describing shared memory regions in guest address space, is created in "kinfo"
when dealing with domain information.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- As the original "struct shm_membank" was m
rs.
This commit defines callback "retrieve_meminfo" for data structure
"struct meminfo".
Signed-off-by: Penny Zheng
---
v1 -> v2:
- define a set of MACRO helpers to access common fields in data structure of
"meminfo" type. "struct meminfo" is one of them, a
nd clear, we extract codes about parsing
"xen,shared-mem" property from function "process_shm" and move them into
a new helper "parse_shm_property".
Signed-off-by: Penny Zheng
---
v1 -> v2
- In order to get allocated banked host memory info during domain creation,
m_memnode" as function parameter to replace them all, to make codes more
clear and tidy.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- combine commits 4 - 6 in Serie 1
- Adapt to changes of introducing "struct shm_memnode"
---
v2 -> v3
- fix infinite loop bug and bad ind
use "remove_shm_from_rangeset" to remove static shm.
For direct-map domain with iommu off, as static shm has already been taken
care of through reserved memory banks, we do nothing.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- error out non-zero res bef
em-1",
not "0x1".
Signed-off-by: Penny Zheng
---
v1 -> v2:
- no new changes
---
v2 -> v3
- rebase and no change
---
docs/misc/arm/device-tree/booting.txt | 52 ---
1 file changed, 39 insertions(+), 13 deletions(-)
diff --git a/docs/misc/arm/device-tree/boot
references for foreign superpages.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- rebase and no change
---
xen/arch/arm/p2m.c | 58 ++
1 file changed, 43 insertions(+), 15 deletions(-)
diff --git a/xen/arch/arm/p2m.c b/xe
Hi, michal
On 2023/8/21 18:49, Michal Orzel wrote:
Hi Penny,
On 21/08/2023 06:00, Penny Zheng wrote:
There are some unsolving issues on current 4.17 static shared memory
feature[1], including:
- In order to avoid keeping growing 'membank', having the shared memory
info i
Hi Julien
On 2023/8/23 02:01, Julien Grall wrote:
Hi Henry,
On 14/08/2023 05:25, Henry Wang wrote:
From: Penny Zheng
Current P2M implementation is designed for MMU system only.
We move the MMU-specific codes into mmu/p2m.c, and only keep generic
codes in p2m.c, like VMID allocator, etc. We
enable_boot_cpu_mm() for boot CPU and
enable_secondary_cpu_mm() for secondary CPUs in this patch.
Signed-off-by: Wei Chen
Signed-off-by: Penny Zheng
Signed-off-by: Henry Wang
Reviewed-by: Julien Grall
---
v6:
- Add Julien's Reviewed-by tag.
v5:
- Add missing "()" in title.
- U
tructure that contains SHMID and a "struct membank membank"
describing shared memory regions in guest address space, is created in "kinfo"
when dealing with domain information.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- As the original "struct shm_membank" was m
Function parameters {addr_cells,size_cells} are stale parameters in
assign_shared_memory, so we shall remove them.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
rebase and no change
---
v3 -> v4:
rebase and no change
---
xen/arch/arm/domain_build.c | 2 --
1 fil
DOC[2]
All above objects have been divided into two parts to complete. And this
patch serie is PART I.
[1] https://lore.kernel.org/all/20220908135513.1800511-1-penny.zh...@arm.com/
[2]
https://www.kernel.org/doc/Documentation/devicetree/bindings/reserved-memory/xen%2Cshared-memory.txt
Penny Zheng
rs.
This commit defines callback "retrieve_meminfo" for data structure
"struct meminfo".
Signed-off-by: Penny Zheng
---
v1 -> v2:
- define a set of MACRO helpers to access common fields in data structure of
"meminfo" type. "struct meminfo" is one of them, a
m_memnode" as function parameter to replace them all, to make codes more
clear and tidy.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- combine commits 4 - 6 in Serie 1
- Adapt to changes of introducing "struct shm_memnode"
---
v2 -> v3
- fix infinite loop bug and bad indentation
- reb
nd clear, we extract codes about parsing
"xen,shared-mem" property from function "process_shm" and move them into
a new helper "parse_shm_property".
Signed-off-by: Penny Zheng
---
v1 -> v2
- In order to get allocated banked host memory info during domain creation,
references for foreign superpages.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- rebase and no change
---
v3 -> v4:
rebase and no change
---
xen/arch/arm/p2m.c | 58 ++
1 file changed, 43 insertions(+), 15 deletions(-)
d
use "remove_shm_from_rangeset" to remove static shm.
For direct-map domain with iommu off, as static shm has already been taken
care of through reserved memory banks, we do nothing.
Signed-off-by: Penny Zheng
---
v1 -> v2:
- new commit
---
v2 -> v3:
- error out non-zero res before rem
Static shared memory region shall be described both under /memory and
/reserved-memory.
We introduce export_shm_memory_node() to create another /memory node to
contain the static shared memory ranges.
Signed-off-by: Penny Zheng
---
v3 -> v4:
new commit
---
xen/arch/arm/domain_build.c |
insert the shm node along with the copying.
And avoiding duplication, we add a checking before make_resv_memory_node().
Signed-off-by: Penny Zheng
---
v3 -> v4:
new commit
---
xen/arch/arm/domain_build.c | 31 ---
xen/arch/arm/include/asm/kernel.h | 2 ++
em-1",
not "0x1".
Signed-off-by: Penny Zheng
---
v1 -> v2:
- no new changes
---
v2 -> v3
- rebase and no change
---
v3 -> v4:
rebase and no change
---
docs/misc/arm/device-tree/booting.txt | 52 ---
1 file changed, 39 insertions(+), 13 deletions(-)
Hi Michal
Sorry for the delayed response, caught up in internal release lately. :\
On 2023/8/22 16:57, Michal Orzel wrote:
Hi Penny,
On 22/08/2023 07:32, Penny Zheng wrote:
Hi, michal
On 2023/8/21 18:49, Michal Orzel wrote:
Hi Penny,
On 21/08/2023 06:00, Penny Zheng wrote:
There are
Hi Michal
On 2023/9/11 17:40, Michal Orzel wrote:
Hi Penny,
On 11/09/2023 06:04, Penny Zheng wrote:
In case there is a /reserved-memory node already present in the host dtb,
current Xen codes would create yet another /reserved-memory node specially
s/codes/code/
for the static shm in
Hi,
On 2023/9/11 12:04, Penny Zheng wrote:
We use paddr_assigned to indicate whether host address is provided, by
checking the length of "xen,shared-mem" property.
The shm matching criteria shall also be adapt to cover the new scenario, by
adding when host address is not provided
Hi Michal
On 2023/9/11 17:01, Michal Orzel wrote:
Hi Penny,
On 11/09/2023 06:04, Penny Zheng wrote:
There are some unsolving issues on current 4.17 static shared memory
feature[1], including:
- In order to avoid keeping growing 'membank', having the shared memory
info in separate
Hi, Ayan
On 2023/9/11 21:59, Ayan Kumar Halder wrote:
The VMSA specific registers (ie TCR, TTBR0, TTBR1, VTTBR, etc) are valid when
MMU is used, thus we can enclose them with CONFIG_MMU.
Signed-off-by: Ayan Kumar Halder
---
xen/arch/arm/traps.c | 17 +++--
1 file changed, 15 ins
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Monday, November 7, 2022 4:47 AM
> To: Wei Chen ; xen-devel@lists.xenproject.org
> Cc: nd ; Penny Zheng ; Stefano
> Stabellini ; Bertrand Marquis
> ; Volodymyr Babchuk
>
> Subject: Re: [PATCH v6 09
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