Hi Julien
On 2023/7/5 05:54, Julien Grall wrote:
Hi Penny,
On 26/06/2023 04:34, Penny Zheng wrote:
From: Wei Chen
Xen defines some global configuration macros for Arm in config.h.
We still want to use it for MMU systems, but there are some address
Did you mean MPU?
yes, typo
layout
Hi,
On 2023/7/5 06:12, Julien Grall wrote:
Hi,
On 26/06/2023 04:34, Penny Zheng wrote:
FIXMAP in MMU system is used to do special-purpose 4K mapping, like
mapping early UART, temporarily mapping source codes for copy and paste
(copy_from_paddr), etc.
As FIXMAP feature is highly dependent on
Hi Julien
On 2023/7/5 06:25, Julien Grall wrote:
Hi Penny,
Title: You want to clarify that this change is arm64 only. So:
xen/arm64: mmu: ...
On 26/06/2023 04:34, Penny Zheng wrote:
Original setup_fixmap is actually doing two seperate tasks, one is
enabling
the early UART when earlyprintk
Hi，
On 2023/7/3 17:31, Julien Grall wrote:
Hi,
On 03/07/2023 07:10, Penny Zheng wrote:
On 2023/6/30 23:19, Ayan Kumar Halder wrote:
Hi Penny,
On 26/06/2023 04:34, Penny Zheng wrote:
CAUTION: This message has originated from an External Source. Please
use proper judgment and caution when
Hi Ayan
On 2023/7/4 23:10, Ayan Kumar Halder wrote:
Hi Penny,
On 26/06/2023 04:34, Penny Zheng wrote:
CAUTION: This message has originated from an External Source. Please
use proper judgment and caution when opening attachments, clicking
links, or responding to this email.
In function
Hi Ayan
On 2023/7/5 01:49, Ayan Kumar Halder wrote:
Hi Penny,
Most of these are specific to ARM_64, thus we can add "#ifdef
CONFIG_ARM_64" as follows :-
Yes, you're right.
On 26/06/2023 04:34, Penny Zheng wrote:
CAUTION: This message has originated from an External Sour
On 2023/7/4 19:47, Julien Grall wrote:
On 04/07/2023 11:36, Ayan Kumar Halder wrote:
Hi Penny,
Hi Ayan,
On 26/06/2023 04:33, Penny Zheng wrote:
CAUTION: This message has originated from an External Source. Please
use proper judgment and caution when opening attachments, clicking
Hi Julien
On 2023/7/5 03:21, Julien Grall wrote:
Hi,
On 26/06/2023 04:33, Penny Zheng wrote:
From: Wei Chen
On Armv8-A, Xen has a fixed virtual start address (link address
too) for all Armv8-A platforms. In an MMU based system, Xen can
map its loaded address to this virtual start address
Hi Julien
On 2023/7/5 18:43, Julien Grall wrote:
Hi Penny,
One more remark.
On 26/06/2023 04:33, Penny Zheng wrote:
From: Wei Chen
There are lots of MMU specific code in head.S. This code will not
be used in MPU systems. If we use #ifdef to gate them, the code
will become messy and hard to
Hi Julien
On 2023/7/5 03:25, Julien Grall wrote:
Hi Penny,
On 26/06/2023 04:34, Penny Zheng wrote:
From: Wei Chen
There is no VMSA support on MPU systems, so we can not map early
UART to FIXMAP_CONSOLE. In stead, we can use PA == VA for early
UART on MPU systems.
Signed-off-by: Wei Chen
Hi Julien
On 2023/7/5 18:30, Julien Grall wrote:
Hi Penny,
On 05/07/2023 07:51, Penny Zheng wrote:
On 2023/7/5 05:54, Julien Grall wrote:
Hi Penny,
On 26/06/2023 04:34, Penny Zheng wrote:
From: Wei Chen
Xen defines some global configuration macros for Arm in config.h.
We still want to
Hi Julien
On 2023/7/5 18:31, Julien Grall wrote:
Hi Penny,
On 05/07/2023 09:19, Penny Zheng wrote:
On 2023/7/5 06:12, Julien Grall wrote:
On 26/06/2023 04:34, Penny Zheng wrote:
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index fb77392b82..22b28b8ba2 100644
--- a/xen/arch/arm
Hi Julien
On 2023/7/5 18:35, Julien Grall wrote:
Hi Penny,
On 05/07/2023 10:03, Penny Zheng wrote:
On 2023/7/5 06:25, Julien Grall wrote:
Hi Penny,
Title: You want to clarify that this change is arm64 only. So:
xen/arm64: mmu: ...
On 26/06/2023 04:34, Penny Zheng wrote:
Original
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
,
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
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
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
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
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
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
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
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
> -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
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: 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 9:45 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 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: 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 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 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
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
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
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
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
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
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
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
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
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
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
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 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 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
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
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
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
---
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
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
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
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
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
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
---
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
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
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
Reviewed-by: Stefano Stabellini
---
v3 change:
- use map_regions_p2mt instead
---
v2 change:
- remove
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
---
v3 change:
- move field &
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Thursday, May 12, 2022 6:14 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v3 4/8] xen/arm: i
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Thursday, May 12, 2022 6:54 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v3 5/8] xen/arm: Add
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, May 17, 2022 2:29 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Jan Beulich ; Stefano Stabellini ;
> Wei Liu
> Subject: Re: [
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, May 17, 2022 2:01 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Jan Beulich ; Stefano Stabellini ;
> Wei Liu
> Subject: Re: [PAT
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 (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 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
introduced later in the
following commits.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
v4 change:
- no changes
---
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
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
---
v4 changes:
- make sure that the right equation return is at least equal to n
- simplify the underflow
---
v3 changes:
- check overflow with "n"
- remov
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
---
v4
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
Reviewed-by: Stefano Stabelli
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
Reviewed-by: Stefano Stabellini
---
v4 changes:
- no change
---
v3 change:
- use map_regions_p2mt instead
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
Hi Jan and Julien
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, May 18, 2022 12:11 AM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei
> Liu ; xen-devel@lists.xenproject.org
> S
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, May 18, 2022 12:01 AM
> 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: Tuesday, May 17, 2022 5:29 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Jan Beulich ; Stefano Stabellini ;
> Wei Liu
> Subject: Re: [PAT
freeing memory resource, so let's drop the __init
flag.
Signed-off-by: Penny Zheng
---
v5 changes:
- In order to avoid stub functions, we #define PGC_staticmem to non-zero only
when CONFIG_STATIC_MEMORY
- use "unlikely()" around pg->count_info & PGC_staticmem
- remove
PGC_reserved could be ambiguous, and we have to tell what the pages are
reserved for, so this commit intends to rename PGC_reserved to
PGC_staticmem, which clearly indicates the page is reserved for static
memory.
Signed-off-by: Penny Zheng
---
v5 changes:
- new commit
---
xen/arch/arm/include
SUPPORT.md doesn't seem to explicitly say whether static memory is
supported, so this commit updates SUPPORT.md to add feature static
allocation tech preview for now.
Signed-off-by: Penny Zheng
---
v5 changes:
- new commit
---
SUPPORT.md | 7 +++
1 file changed, 7 insertions(+)
diff
quot;
- 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_domain_static return ((void)(d), false) on x86
- fix
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.
Suggested-by: Julien Grall
Signed-off-by: Penny Zheng
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
---
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
---
v5 changes:
- adapt this patch for PGC_staticmem
---
v4 changes:
- no changes
---
acquire_staticmem_pages() in two parts, and
introduces prepare_staticmem_pages to bypass all "pointless work".
Signed-off-by: Penny Zheng
---
v5 changes:
- new commit
---
xen/common/page_alloc.c | 61 -
1 file changed, 36 insertions(+), 25 deletion
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
---
v5 changes:
- guard "is_domain_using_staticmem&q
.
Signed-off-by: Penny Zheng
---
v5 changes:
- extract common codes for assigning pages into a helper assign_domstatic_pages
- refine commit message
- remove stub function acquire_reserved_page
- Alloc/free of memory can happen concurrently. So access to rsv_page_list
needs to be protected with a
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, May 31, 2022 4:33 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ;
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, May 31, 2022 4:37 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ; xen-devel@list
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, May 31, 2022 4:41 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ;
"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_domain_static return ((void)(d), false) on x86
- f
PGC_reserved could be ambiguous, and we have to tell what the pages are
reserved for, so this commit intends to rename PGC_reserved to
PGC_static, which clearly indicates the page is reserved for static
memory.
Signed-off-by: Penny Zheng
---
v6 changes:
- rename PGC_staticmem to PGC_static
freeing memory resource, so let's drop the __init
flag.
Signed-off-by: Penny Zheng
---
v6 changes:
- adapt to PGC_static
- remove #ifdef aroud function declaration
---
v5 changes:
- In order to avoid stub functions, we #define PGC_staticmem to non-zero only
when CONFIG_STATIC_MEMORY
- use &quo
SUPPORT.md doesn't seem to explicitly say whether static memory is
supported, so this commit updates SUPPORT.md to add feature static
allocation tech preview for now.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
v6 changes:
- use domain instead of sub-systems
---
v5 ch
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.
Suggested-by: Julien Grall
Signed-off-by: Penny Zheng
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
---
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
---
v6 changes:
- move non-zero is_domain_using_staticmem
.
Signed-off-by: Penny Zheng
---
v6 changes:
- drop the lock before returning
---
v5 changes:
- extract common codes for assigning pages into a helper assign_domstatic_pages
- refine commit message
- remove stub function acquire_reserved_page
- Alloc/free of memory can happen concurrently. So access
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
Acked-by: Jan Beulich
---
v6 changes:
- refine in-code comment
- move
acquire_staticmem_pages() in two parts, and
introduces prepare_staticmem_pages to bypass all "pointless work".
Signed-off-by: Penny Zheng
Acked-by: Jan Beulich
---
v6 changes:
- adapt to PGC_static
---
v5 changes:
- new commit
---
xen/common/page_al
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, June 7, 2022 5:20 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk ; Andrew Cooper
> ; George Dunlap ;
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