From: Penny Zheng
To add statically shared memory nodes in Dom0, user shall put according
static shared memory configuration under /chosen node.
This commit adds shm-processing function process_shm in construct_dom0
to enable statically shared memory on Dom0.
Signed-off-by: Penny Zheng
Borrower domain will fail to get a page ref using the owner domain
during allocation, when the owner is created after borrower.
So here, we decide to get and add the right amount of reference, which
is the number of borrowers, when the owner is allocated.
Signed-off-by: Penny Zheng
---
v3
introduces a set of new helpers
put_page_nr() and get_page_nr() to increment/drop the page reference by nr.
Signed-off-by: Penny Zheng
---
v3 changes:
- check overflow with "n"
- remove spurious change
- bring back the check that we enter the loop only when count_info is
greater than 0
---
introduced later in the
following commits.
Signed-off-by: Penny Zheng
---
v3 change:
- simplify the code since o_gbase is not used if the domain is dom_io
---
v2 change:
- P2M mapping is restricted to normal domain
- in-code comment fix
---
xen/arch/arm/domain_build.c | 44
From: Penny Zheng
This commit introduces process_shm to cope with static shared memory in
domain construction.
DOMID_IO will be the default owner of memory pre-shared among multiple domains
at boot time, when no explicit owner is specified.
This commit only considers allocating static shared
r more details.
Penny Zheng (8):
xen/arm: introduce static shared memory
xen/arm: allocate static shared memory to the default owner dom_io
xen/arm: allocate static shared memory to a specific owner domain
xen/arm: introduce put_page_nr and get_page_nr
xen/arm: Add additional reference to own
From: Penny Zheng
This patch serie introduces a new feature: setting up static
shared memory on a dom0less system, through device tree configuration.
This commit parses shared memory node at boot-time, and reserve it in
bootinfo.reserved_mem to avoid other use.
This commits proposes a new
acquire_reserved_page to make it work.
Signed-off-by: Penny Zheng
---
v4 changes：
- miss dropping __init in acquire_domstatic_pages
- add the page back to the reserved list in case of error
- remove redundant printk
- refine log message and make it warn level
---
v3 changes:
- move is_domain_using_staticmem
go back to heap
allocator.
This commit puts reserved pages on the new list resv_page_list only after
having taken them off the "normal" list, when the last ref dropped.
Signed-off-by: Penny Zheng
---
v4 changes:
- no changes
---
v3 changes:
- have page_list_del() just once out
In order to have an easy and quick way to find out whether this domain memory
is statically configured, this commit introduces a new flag CDF_staticmem and a
new helper is_domain_using_staticmem() to tell.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
v4 changes:
- no changes
With more and more CDF_xxx internal flags in and to save the space, this
commit introduces a new field "flags" in struct domain to store CDF_*
internal flags directly.
Another new CDF_xxx will be introduced in the next patch.
Signed-off-by: Penny Zheng
Acked-by: Julien Grall
---
result.
So in order to avoid the above scenario, this commit updates free_heap_pages()
to check whether the predecessor and/or successor has PGC_reserved set,
when trying to merge the about-to-be-freed chunk with the predecessor
and/or successor.
Signed-off-by: Penny Zheng
Suggested-by: Julien Grall
freeing memory resource, so let's drop the __init
flag.
Signed-off-by: Penny Zheng
---
v4 changes:
- no changes
---
v3 changes:
- fix possible racy issue in free_staticmem_pages()
- introduce a stub free_staticmem_pages() for the !CONFIG_STATIC_MEMORY case
- move the change to free_heap_pages
ages on resv_page_list after having taken them off
the "normal" list
- introduce acquire_reserved_page to retrieve reserved pages from
resv_page_list
- forbid non-zero-order requests in populate_physmap
- let is_domain_static return ((void)(d), false) on x86
- fix coding style
Penny Zhe
Hi julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, May 7, 2022 5:01 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v2 6/9] xen/arm: a
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Saturday, May 7, 2022 9:09 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; Wei Chen ; Stefano
> Stabellini ; Julien Grall ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject:
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Saturday, May 7, 2022 9:08 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; Wei Chen ; Stefano
> Stabellini ; Julien Grall ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject:
Hi jan and julien
> -Original Message-
> From: Jan Beulich
> Sent: Friday, May 6, 2022 2:14 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
following properties:
- compatible:
compatible = "xen,shared-memory-v1"
- reg:
the base guest physical address and size of the shared memory region
- xen,id:
a string that identifies the shared memory region.
Signed-off-by: Penny Zheng
---
v2 change:
- using xzal
From: Penny Zheng
To add statically shared memory nodes in Dom0, user shall put according
static shared memory configuration under /chosen node.
This commit adds shm-processing function process_shm in construct_dom0
to enable statically shared memory on Dom0.
Signed-off-by: Penny Zheng
---
v2
This commit sets up shared memory foreign mapping for borrower domain.
If owner domain is the default dom_io, all shared domain are treated as
borrower domain.
Signed-off-by: Penny Zheng
---
v2 change:
- remove guest_physmap_add_shm, since for borrower domain, we only
do P2M foreign memory
In order to cover the scenario where users intend to set up guest
p2m foreign mapping with nr_pages, this commit adds a new P2M type
parameter in guest_physmap_add_pages.
Signed-off-by: Penny Zheng
---
v2 change:
- no change
---
xen/arch/arm/domain_build.c| 5 +++--
xen/arch/arm/include/asm
introduces a set of new helpers
put_page_nr() and get_page_nr() to increment/drop the page reference by nr.
Signed-off-by: Penny Zheng
---
v2 change:
- new commit
---
xen/arch/arm/include/asm/mm.h | 4
xen/arch/arm/mm.c | 36 +--
2 files changed, 30
Borrower domain will fail to get a page ref using the owner domain
during allocation, when the owner is created after borrower.
So here, we decide to get and add the right amount of reference, which
is the number of borrowers, when the owner is allocated.
Signed-off-by: Penny Zheng
---
v2
From: Penny Zheng
This commit introduces process_shm to cope with static shared memory in
domain construction.
DOMID_IO will be the default owner of memory pre-shared among multiple domains
at boot time, when no explicit owner is specified.
This commit only considers allocating static shared
From: Penny Zheng
This patch serie introduces a new feature: setting up static
shared memory on a dom0less system, through device tree configuration.
This commit parses shared memory node at boot-time, and reserve it in
bootinfo.reserved_mem to avoid other use.
This commits proposes a new
r more details.
Penny Zheng (9):
xen/arm: introduce static shared memory
xen/arm: allocate static shared memory to the default owner dom_io
xen/arm: allocate static shared memory to a specific owner domain
xen/arm: introduce put_page_nr and get_page_nr
xen/arm: Add additional reference t
introduced later in the
following commits.
Signed-off-by: Penny Zheng
---
v2 change:
- P2M mapping is restricted to normal domain
- in-code comment fix
---
xen/arch/arm/domain_build.c | 55 +
1 file changed, 43 insertions(+), 12 deletions(-)
diff --git a/xen
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, May 5, 2022 10:23 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, May 5, 2022 8:07 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, May 5, 2022 4:51 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano
> Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, May 5, 2022 3:47 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano
> Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, May 4, 2022 9:45 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano
> Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi,
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, May 4, 2022 9:30 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano
> Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org
> S
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, May 4, 2022 9:27 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
> -Original Message-
> From: Stefano Stabellini
> Sent: Thursday, April 28, 2022 6:32 AM
> To: Penny Zheng
> Cc: Julien Grall ; xen-devel@lists.xenproject.org; Wei Chen
> ; Henry Wang ; Stefano
> Stabellini ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andr
freeing memory resource, so let's drop the __init
flag.
Signed-off-by: Penny Zheng
---
This is a reissued commit for patch serie "populate/unpopulate memory when
domain on static allocation"(
https://patchwork.kernel.org/project/xen-devel/list/?series=636094).
This commit has be
Hi julien
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, April 27, 2022 6:23 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Henry Wang ;
> Stefano Stabellini ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; Ge
Hi julien
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, April 27, 2022 6:11 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Henry Wang ;
> Stefano Stabellini ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; Ge
acquire_reserved_page to make it work.
Signed-off-by: Penny Zheng
---
v3 changes
- move #ifndef is_domain_using_staticmem to the common header file
- remove #ifdef CONFIG_STATIC_MEMORY-ary
- remove meaningless page_to_mfn(page) in error log
---
v2 changes:
- introduce acquire_reserved_page to retrieve
go back to heap
allocator.
This commit puts reserved pages on the new list resv_page_list only after
having taken them off the "normal" list, when the last ref dropped.
Signed-off-by: Penny Zheng
---
v3 changes:
- have page_list_del() just once out of the if()
- remove resv_pages coun
In order to have an easy and quick way to find out whether this domain memory
is statically configured, this commit introduces a new flag CDF_staticmem and a
new helper is_domain_using_staticmem() to tell.
Reviewed-by: Stefano Stabellini
Signed-off-by: Penny Zheng
---
v3 changes:
- change name
With more and more CDF_xxx internal flags in and to save the space, this
commit introduces a new field "flags" in struct domain to store CDF_*
internal flags directly.
Another new CDF_xxx will be introduced in the next patch.
Signed-off-by: Penny Zheng
---
v3 changes:
- change fixed
,
when trying to merge the about-to-be-freed chunk with the predecessor
and/or successor.
Signed-off-by: Penny Zheng
---
v3 changes:
- no changes
---
v2 changes:
- new commit
---
xen/common/page_alloc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xen/common/page_alloc.c b/xen/common
tatic_allocation" to "is_domain_static()"
- put reserved pages on resv_page_list after having taken them off
the "normal" list
- introduce acquire_reserved_page to retrieve reserved pages from
resv_page_list
- forbid non-zero-order requests in populate_physmap
- let is_dom
Hi, jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, April 25, 2022 4:01 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ;
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, April 19, 2022 5:11 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ;
Hi, julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, April 9, 2022 5:26 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: nd ; Stefano Stabellini ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject: Re: [PATCH v1 08/13] xen/arm: dest
Hi
> -Original Message-
> From: Julien Grall
> Sent: Saturday, April 9, 2022 5:31 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: nd ; Stefano Stabellini ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject: Re: [PATCH v1 06/13] xen/arm: set
Hi julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, April 9, 2022 6:59 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: nd ; Stefano Stabellini ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject: Re: [PATCH v1 06/13] xen/arm: set
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, April 19, 2022 4:59 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 jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, April 19, 2022 4:47 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei
> Liu ; Bertrand Marquis ;
> Volodymyr Babchuk ; xen
acquire_reserved_page to make it work.
Signed-off-by: Penny Zheng
---
v2 changes:
- introduce acquire_reserved_page to retrieve reserved pages from
resv_page_list
- forbid non-zero-order requests in populate_physmap
- let is_domain_static return ((void)(d), false) on x86
---
xen/common/memory.c | 29
In order to have an easy and quick way to find out whether this domain memory
is statically configured, this commit introduces a new flag CDF_staticmem and a
new helper is_domain_static to tell.
Signed-off-by: Penny Zheng
---
v2 changes:
- change name from "is_domain_on_static_allocatio
With more and more CDF_xxx internal flags in and to save the space, this
commit introduces a new field "flags" in struct domain to store CDF_*
internal flags directly.
Another new CDF_xxx will be introduced in the next patch.
Signed-off-by: Penny Zheng
---
v2 changes:
- let "fla
go back to heap
allocator.
This commit puts reserved pages on the new list resv_page_list only after
having taken them off the "normal" list, when the last ref dropped.
Signed-off-by: Penny Zheng
---
v2 changes:
- put reserved pages on resv_page_list after having taken them off
the &qu
,
when trying to merge the about-to-be-freed chunk with the predecessor
and/or successor.
Signed-off-by: Penny Zheng
---
v2 changes:
- new commit
---
xen/common/page_alloc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 9a3e9c1328
al" list
- introduce acquire_reserved_page to retrieve reserved pages from
resv_page_list
- forbid non-zero-order requests in populate_physmap
- let is_domain_static return ((void)(d), false) on x86
- fix coding style
Penny Zheng (6):
xen/arm: do not free reserved memory into heap
xen/arm: do n
freeing memory resource, so let's drop the __init
flag.
Signed-off-by: Penny Zheng
---
v2 changes:
- new commit
---
xen/common/page_alloc.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 319029140f..9a3e9
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Friday, March 18, 2022 4:53 PM
> To: Penny Zheng
> Cc: nd ; Penny Zheng
> ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George
Hi Julien and Stefano
> -Original Message-
> From: Julien Grall
> Sent: Saturday, April 9, 2022 5:12 PM
> To: Stefano Stabellini ; Jan Beulich
>
> Cc: Penny Zheng ; nd ; Penny Zheng
> ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George
Hi Julien and Jan
> -Original Message-
> From: Julien Grall
> Sent: Saturday, April 2, 2022 2:54 AM
> To: Penny Zheng ; Jan Beulich
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Stefano Stabellini ; Wei
> Liu ; xen-devel@lists.xenproject.org
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, March 31, 2022 3:06 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
&
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, March 30, 2022 5:59 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
&
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, March 30, 2022 5:53 PM
> To: Penny Zheng
> Cc: Wei Chen ; Henry Wang ;
> Andrew Cooper ; George Dunlap
> ; Julien Grall ; Stefano Stabellini
> ; Wei Liu ; xen-
> de...@lists.xenproject.org
&
When domain on static allocation populates memory through populate_physmap,
other than allocating from heap, it shall allocate from resv_page_list to
make sure that all guest RAM are still restricted in statically configured
regions.
Signed-off-by: Penny Zheng
---
xen/common/memory.c | 20
When domain on static allocation and is directly mapped, in terms of
GPA == HPA(guest physical address == host physical address), we could use
mfn_to_page() to easily find the page, so there is no need to store pages
in resv_page_list.
Signed-off-by: Penny Zheng
---
xen/common/memory.c | 5
to heap.
For above purpose, this commit tries to keep page allocated and store it
in page list d->resv_page_list on guest_remove_page, when domain on
static allocation.
Signed-off-by: Penny Zheng
---
xen/common/domain.c | 4
xen/common/memory.c | 22 +-
With more and more CDF_xxx internal flags in and to save the space, this
commit introduces a new field "flags" to store CDF_* internal flags
directly.
Another new CDF_xxx will be introduced in the next patch.
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain.c | 3 ++-
In order to have an easy and quick way to find out whether this domain is
on static allocation, this commit introduces a new flag CDF_staticmem and a
new helper is_domain_on_static_allocation.
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 5 -
xen/arch/arm/include/asm
never go back to heap.
This patch serie intends to fix this issue, by keeping page allocated and
storing it in page list when unpopulating memory, and retrieving page from page
list when populating memory.
Penny Zheng (5):
xen/arm: field "flags" to cover all internal CDF_XXX
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Friday, March 18, 2022 10:01 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; nd ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
>
> Subject: Re: [PAT
Hi Stefano
Sorry for the late response, got sidetracked an emergency issue. ;/
> -Original Message-
> From: Stefano Stabellini
> Sent: Friday, March 18, 2022 10:00 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; nd ; Stefano Stabellini
> ; Julien Grall
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Friday, March 18, 2022 10:00 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; nd ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
>
> Subject: R
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Friday, March 18, 2022 9:59 AM
> To: Penny Zheng
> Cc: xen-devel@lists.xenproject.org; nd ; Penny Zheng
> ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andr
From: Penny Zheng
This commit introduces a new helper shm_init_late to implement
deferred foreign memory mapping of static shared memory.
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c | 51 +++
xen/arch/arm/include/asm/domain.h | 1 +
xen/arch
From: Penny Zheng
In a few scenarios where owner domain, is defined after borrower domain in
device tree configuration, then statically shared pages haven't been properly
allocated if borrower domain tries to do foreign memory map during
domain construction.
In order to cover such scenari
From: Penny Zheng
When destroyed domain is an owner domain of a static shared memory
region, then we need to ensure that all according borrower domains
shall not have the access to this static shared memory region too.
This commit covers above scenario through unmapping all borrowers'
acco
From: Penny Zheng
If owner property is defined, then owner domain of a static shared memory
region is not the default dom_shared anymore, but a specific domain.
This commit implements allocating static shared memory to a specific domain
when owner property is defined.
Signed-off-by: Penny
From: Penny Zheng
To add statically shared memory nodes in Dom0, user shall put according
static shared memory configuration under /chosen node.
This commit adds shm-processing function process_shm in construct_dom0
to enable statically shared memory on Dom0.
Signed-off-by: Penny Zheng
From: Penny Zheng
We expose the shared memory to the domU using the "xen,shared-memory-v1"
reserved-memory binding. See
Documentation/devicetree/bindings/reserved-memory/xen,shared-memory.txt
in Linux for the corresponding device tree binding.
To save the cost of re-parsing shared mem
From: Penny Zheng
This patch serie introduces a new feature: setting up static
shared memory on a dom0less system, through device tree configuration.
This commit parses shared memory node at boot-time, and reserve it in
bootinfo.reserved_mem to avoid other use.
Signed-off-by: Penny Zheng
From: Penny Zheng
This commit introduces a new helper destroy_domain_shm to destroy static
shared memory at domain de-construction.
This patch only considers the scenario where the owner domain is the
default dom_shared, for user-defined owner domain, it will be covered in
the following patches
From: Penny Zheng
This commits introduces a new helper guest_physmap_add_shm to set up shared
memory foreign mapping for borrower domain.
Firstly it should get and take reference of statically shared pages from
owner dom_shared. Then it will setup P2M foreign memory map of these statically
From: Penny Zheng
This commit introduces process_shm to cope with static shared memory in
domain construction.
This commit only considers allocating static shared memory to dom_shared
when owner domain is not explicitly defined in device tree, the other
scenario will be covered in the following
From: Penny Zheng
In order to cover the scenario where users intend to set up guest
p2m foreign mapping with nr_pages, this commit adds a new P2M type
parameter in guest_physmap_add_pages.
Signed-off-by: Penny Zheng
---
xen/arch/arm/domain_build.c| 5 +++--
xen/arch/arm/include/asm/p2m.h
From: Penny Zheng
In order to getting statically shared pages based on gfn with nr_pages, this
commit introduces a new helper get_pages_from_gfn to acquire a set of pages
based on [gfn, gfn + nr_gfns), with the same P2M type.
Signed-off-by: Penny Zheng
---
xen/arch/arm/include/asm/p2m.h | 37
From: Penny Zheng
In case to own statically shared pages when owner domain is not
explicitly defined, this commits propose a special domain DOMID_SHARED,
and we assign it 0x7FF5, as one of the system domains.
Statically shared memory reuses the same way of initialization with static
memory
r more details.
Penny Zheng (13):
xen/arm: introduce static shared memory
xen/arm: introduce a special domain DOMID_SHARED
xen/arm: allocate static shared memory to dom_shared
xen/arm: add P2M type parameter in guest_physmap_add_pages
xen/arm: introduce get_pages_from_gfn
xen/arm: set up
Hi Julien
Sorry for the late response, Since I'm considering sending the code together
for better
understanding.
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, January 26, 2022 6:58 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabel
Hi julien
> -Original Message-
> From: Wei Chen
> Sent: Tuesday, March 1, 2022 3:52 PM
> To: Julien Grall ; xen-devel@lists.xenproject.org; Stefano
> Stabellini
> Cc: Bertrand Marquis ; Penny Zheng
> ; Henry Wang ; nd
>
> Subject: RE: Proposal for Portin
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
Reviewed-by: Julien Grall
Tested-by
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
Acked-by: Julien Grall
Tested-by: Stefano Stabellini
---
v2 changes:
- nothing changed
---
v3 changes:
- nothing changed
This commit gates function make_gicv3_domU_node with CONFIG_GICV3.
Signed-off-by: Penny Zheng
Acked-by: Stefano Stabellini
Tested-by: Stefano Stabellini
---
v4 changes:
- remove ASSERT_UNREACHABLE() to avoid breaking compilation on prod build with
CONFIG_GICV3=n
---
v5 changes:
- nothing
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
Reviewed-by: Julien Grall
Tested-by: Stefano Stabellini
---
v2 changes:
- explain why vpl011 initialization before creating its
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
Tested-by: Stefano Stabellini
---
v3 changes:
- new commit
---
v4 changes
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
Reviewed-by: Julien Grall
Tested
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
Reviewed-by: Stefano Stabellini
Tested-by: Stefano Stabellini
---
v2 changes:
- split the common codes into two helpers: parse_stat
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_SIZE.
Penny Zheng (4):
xen/arm: introduce new helper parse_static_mem_prop and
acquire_stat
in so long they are
direct-mapped or the device doesn't do DMA.
Note that when the IOMMU is disabled, it will be necessary to add
xen,force-assign-without-iommu for every device that needs to be assigned.
Signed-off-by: Stefano Stabellini
Signed-off-by: Penny Zheng
Tested-by: Stefano Stabelli
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