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
---
v7 changes:
- Add page on the rsv_page_list *after* it has been freed
---
v6 changes:
-
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
---
v7 changes:
- no change
---
v6 changes:
- adapt to PGC_static
---
v5 changes:
- new commit
---
xen/common/page_al
.
Signed-off-by: Penny Zheng
---
v7 changes:
- remove the lock, since we add the page to rsv_page_list after it has
been totally freed.
---
v6 changes:
- drop the lock before returning
---
v5 changes:
- extract common codes for assigning pages into a helper assign_domstatic_pages
- refine commit
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
---
v7 changes:
- IS_ENABLED(CONFIG_STATIC_MEMORY) would not be
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
introduced later in the
following commits.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
v5 change:
- no change
---
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
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
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
Reviewed-by: Stefano Stabellini
---
v5 change:
- no change
---
v4 changes:
- fix the assert about checking overflow to make sure that the right equation
return is at
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
Reviewed-by
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
---
v5 change:
- no change
---
v4 changes:
- no change
---
v3 change:
- use
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
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
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, June 22, 2022 5:24 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei Liu ; xen-devel@lists.xenproject.org
> Subject:
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 3:51 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 and Jan
> -Original Message-
> From: Julien Grall
> Sent: Monday, June 27, 2022 6:19 PM
> To: Penny Zheng ; Jan Beulich
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Stefano Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org
> Subject:
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 1:55 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 1/8] xen/arm:
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Wednesday, June 29, 2022 1:56 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Stefano Stabellini ; Wei Liu ; xen-
> de...@lists.xenproject.org; Julien Grall
> Subject:
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 2:22 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk ; Andrew Cooper
> ; George Dunlap ;
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 3:07 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 3/8] xen/arm
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 3:18 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 5/8] xen/arm:
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 1:55 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 1/8] xen/arm:
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, June 25, 2022 3:26 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 1/8] xen/arm:
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, June 29, 2022 6:35 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 Stefano and Julien
> -Original Message-
> From: Stefano Stabellini
> Sent: Saturday, June 25, 2022 5:57 AM
> To: Julien Grall
> Cc: Penny Zheng ; xen-devel@lists.xenproject.org;
> Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
>
Hi Stefano and julien
> -Original Message-
> From: Stefano Stabellini
> Sent: Thursday, July 7, 2022 7:53 AM
> To: Penny Zheng
> Cc: Stefano Stabellini ; Julien Grall
> ;
> xen-devel@lists.xenproject.org; Wei Chen ; Bertrand
> Marquis ; Volodymyr Babchuk
>
&
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 coding style
, and free_staticmem_pages will be called by it
in runtime, so let's drop the __init flag.
Signed-off-by: Penny Zheng
---
v8 changes:
- introduce new helper free_domstatic_page
- let put_page call free_domstatic_page for static page, when last ref
drops
- #define PGC_static zero
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
---
v8 changes:
- no change
---
v7 changes:
- no change
-
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
Acked-by: Jan Beulich
---
v8 changes
- no change
---
v7
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
---
v8 changes:
- adapt this patch for newly introduced free_domstatic_page
- order as a pa
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
---
v8 changes:
- #ifdef-ary around is_domain_using_staticmem
.
Signed-off-by: Penny Zheng
---
v8 changes:
- As concurrent free/allocate could modify the resv_page_list, we still
need the lock
---
v7 changes:
- remove the lock, since we add the page to rsv_page_list after it has
been totally freed.
---
v6 changes:
- drop the lock before returning
---
v5 changes
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
---
v8 changes:
- no change
---
v7 changes:
- no change
---
v6 changes:
- adapt to PGC_static
---
v5 changes:
- new commit
---
Hi Stefano
> -Original Message-
> From: Stefano Stabellini
> Sent: Saturday, July 9, 2022 12:41 AM
> To: Penny Zheng
> Cc: Stefano Stabellini ; jul...@xen.org; xen-
> de...@lists.xenproject.org; Wei Chen ; Bertrand
> Marquis ; Volodymyr Babchuk
>
> Subject:
>> +# Run the test
> >>> +rm -f qemu-staticmem.serial
> >>> +set +e
> >>> +echo " virtio scan; dhcp; tftpb 0x4000 boot.scr; source
> >>> +0x4000"| \ timeout -k 1 60 ./binaries/qemu-system-aarch64 -
> nographic \
> >>> +-M virtualization=true \
> >>> +-M virt \
> >>> +-M virt,gic-version=2 \
> >>> +-cpu cortex-a57 \
> >>> +-smp 2 \
> >>> +-m 8G \
> >>> +-no-reboot \
> >>> +-device virtio-net-pci,netdev=vnet0 -netdev
> >>> +user,id=vnet0,tftp=binaries
> >>> \
> >>> +-bios /usr/lib/u-boot/qemu_arm64/u-boot.bin \
> >>> +-dtb ./binaries/virt-gicv2.dtb \
> >>> +|& tee qemu-staticmem.serial
> >>> +
> >>> +set -e
> >>
> >> A lot of the code above is duplicated from qemu-smoke-arm64.sh. I
> >> think it would be better to consolidate in a single script. Looking
> >> briefly throught the existing scripts, it looks like it is possible
> >> to pass arguments (see qemu-smoke-x86-64.sh).
> >
> > One idea would be to make the script common and "source" a second
> > script or config file with just the ImageBuilder configuration because
> > it looks like it is the only thing different.
> >
> >
> >>> +
> >>> +(grep -q "Xen dom0less mode detected" qemu-staticmem.serial) ||
> >>> +exit 1
> >>> +
> >>> +for ((i=0; i<${#base[@]}; i++))
> >>> +do
> >>> +start="$(printf "0x%016x" ${base[$i]})"
> >>> +end="$(printf "0x%016x" $((${base[$i]} + ${size[$i]} - 1)))"
> >>> +grep -q "node 0: \[mem ${start}-${end}\]" qemu-staticmem.serial
> >>> +if test $? -eq 1
> >>> +then
> >>> +exit 1
> >>> +fi
> >>> +done
> >>
> >> Please add a comment on top to explain what this is meant to do.
> >> However, I think we should avoid relying on output that we have
> >> written ourself. IOW, relying on Xen/Linux to always write the same
> >> message is risky because they can change at any time.
> >
> > Especially if we make the script common, then we could just rely on
> > the existing check to see if the guest started correctly (no special
> > check for static memory).
>
> In this case, how the test will verify that the static memory configuration
> has
> been taken into account and has not just been ignored?
>
If only statically allocated memory is enabled, guest memory address will still
be mapped
to GUEST_RAM_BASE(0x4000)
> >>> +
> >>> +(grep -q "BusyBox" qemu-staticmem.serial) || exit 1
> >
>
> --
> Xenia
---
Cheers,
Penny Zheng
Hi Xenia
> -Original Message-
> From: Xenia Ragiadakou
> Sent: Monday, July 11, 2022 11:29 PM
> To: Penny Zheng ; Stefano Stabellini
> ; Julien Grall
> Cc: xen-devel@lists.xenproject.org; Doug Goldstein
> Subject: Re: [PATCH 2/2] automation: arm64: Create a
Hi Julien
Before submitting the v6 patch series, I would like to double confirm that ...
> -Original Message-
> From: Julien Grall
> Sent: Wednesday, June 29, 2022 6:18 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
>
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, July 16, 2022 2:10 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org
> Cc: Wei Chen ; Stefano Stabellini
> ; Bertrand Marquis ;
> Volodymyr Babchuk
> Subject: Re: [PATCH v5 1/8] xen/arm:
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Friday, July 8, 2022 8:48 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ; xen-devel@
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Friday, July 8, 2022 9:06 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei Liu ; xen-devel@lists.xenproject.org
> Subject: Re: [PATCH v8
)"
- 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 c
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
Acked-by: Jan Beulich
Acked-by: Julien Grall
---
v8
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
, and free_staticmem_pages will be called by it
in runtime, so let's drop the __init flag.
Signed-off-by: Penny Zheng
---
v9 changes:
- move free_domheap_page into else-condition
- considering scrubbing static pages, domain dying case and opt_scrub_domheap
both donot apply to static pages.
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
Acked-by: Julien Grall
Acked-by: Jan Beulich
---
v9 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
---
v9 change:
- remove macro helper put_static_page, and just expand its c
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
Acked-by: Julien Grall
---
v8 changes:
- no change
---
v7 changes:
- no change
---
v6 changes:
- adapt to PGC_static
---
.
Signed-off-by: Penny Zheng
---
v9 changes:
- Use ASSERT_ALLOC_CONTEXT() in acquire_reserved_page
- Add free_staticmem_pages to undo prepare_staticmem_pages when
assign_domstatic_pages fails
- Remove redundant static in error message
---
v8 changes:
- As concurrent free/allocate could modify the
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 to own
From: Penny Zheng
This patch series 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
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
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
Reviewed-by: Stefano Stabellini
Reviewed-by: Julien Grall
---
v6 change:
- no change
---
v5 change:
- no change
---
v4 changes:
- fix the assert about checking
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
Reviewed-by
introduced later in the
following commits.
Signed-off-by: Penny Zheng
Reviewed-by: Stefano Stabellini
---
v6 change:
- fix coding-style
- role_str and owner_dom_io shall be defined within the loop
---
v5 change:
- no change
---
v4 change:
- no changes
---
v3 change:
- simplify the code since
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
---
v6 change:
- no change
---
v5 change:
- no change
---
v4 changes:
- no
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 Stabe
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
on ARM, static memory sharing is tech preview, which shall be documented
in SUPPORT.md
Signed-off-by: Penny Zheng
---
v6 change:
- new commit
---
SUPPORT.md | 6 ++
1 file changed, 6 insertions(+)
diff --git a/SUPPORT.md b/SUPPORT.md
index 8e040d1c1e..3dfe6d2fbe 100644
--- a/SUPPORT.md
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 25, 2022 11:36 PM
> To: Penny Zheng
> Cc: Wei Chen ; Andrew Cooper
> ; George Dunlap ;
> Julien Grall ; Stefano Stabellini ;
> Wei Liu ; xen-devel@lists.xenproject.org
> Subject: Re: [PATCH
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 25, 2022 11:30 PM
> To: Penny Zheng
> Cc: Wei Chen ; Stefano Stabellini
> ; Julien Grall ; Bertrand Marquis
> ; Volodymyr Babchuk
> ; Andrew Cooper
> ; George Dunlap ;
> Wei Liu ;
the contents of the /proc/device-tree
> memory entry with the static memory range with which DOM1 was
> configured.
> If the memory layout is correct, a message gets printed by DOM1.
>
> At the end of the qemu run, the script searches for the specific message in
> th
Hi Julien
Sorry for so long to respond, just back from a long holiday. 😉
> -Original Message-
> From: Julien Grall
> Sent: Thursday, July 1, 2021 1:44 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Thursday, July 1, 2021 1:45 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand Marquis ; Wei Chen
>
> Subject: Re: [PATCH
Hi Julien and Jan
> -Original Message-
> From: Julien Grall
> Sent: Thursday, July 1, 2021 1:46 AM
> To: Jan Beulich ; Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Subject: Re: [PATCH 4/9
Hi Jan
> -Original Message-
> From: Penny Zheng
> Sent: Monday, July 5, 2021 1:22 PM
> To: Julien Grall ; Jan Beulich
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Subject: RE: [PATCH 4/9] xen/arm: static memor
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Thursday, July 1, 2021 2:10 AM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand Marquis ; Wei Chen
>
> Subject: Re: [PATCH 4/9] xen/arm: stat
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 5, 2021 3:51 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; Julien Grall
> Subject: Re: [PATCH 4/9] xen/arm: static memor
Hi
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, June 10, 2021 6:23 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject: Re: [PATCH 6/9] xen/arm: introduce a
Hi
> -Original Message-
> From: Julien Grall
> Sent: Saturday, July 3, 2021 9:26 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand Marquis ; Wei Chen
>
> Subject: Re: [PATCH 8/9] xen/arm: check `
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Saturday, July 3, 2021 10:18 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand Marquis ; Wei Chen
>
> Subject: Re: [PATCH
Hi jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, July 6, 2021 2:58 PM
> To: Penny Zheng ; Julien Grall
> Cc: Bertrand Marquis ; Wei Chen
> ; sstabell...@kernel.org; xen-
> de...@lists.xenproject.org
> Subject: Re: [PATCH 8/9] xen/arm: check `
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Tuesday, July 6, 2021 5:10 PM
> To: Penny Zheng ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jbeul...@suse.com
> Cc: Bertrand Marquis ; Wei Chen
>
> Subject: Re: [PATCH 4/9] xen/arm: stat
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Tuesday, July 6, 2021 2:54 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; Julien Grall
> Subject: Re: [PATCH 6/9] xen/arm: introduce a
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Thursday, July 8, 2021 6:06 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; xen-
> de...@lists.xenproject.org; sstabell...@kernel.org; Julien Grall
> ; Wei Chen
> Subject: Re: [PATCH 6/9] xen/arm: introduce a
c-mem` feature, and also documents
and parses this new attribute at boot time and stores related info in
static_mem for later initialization.
Signed-off-by: Penny Zheng
---
v3 changes:
- use "xen,static-mem" property to be compatible with System Sevice Tree
in the future
---
docs/misc/
domstatic_pages.
- remove hunks' #ifdef-ary by introducing PGC_reserved = 0
- remove DMA restriction
- "memory" property shall be mandatory
- rename allocate_static_bank_memory to append_static_memory_to_bank
- infer the next GFN from the bank information in append_static_memory_to_bank
A few functions iterate over the device tree property to get memory info,
like "reg" or "xen,static-mem", so this commit creates a new helper
device_tree_get_meminfo to extract the
common codes.
Signed-off-by: Penny Zheng
---
xen/arch
This commit defines a new helper mark_page_free to extract common code,
like following the same cache/TLB coherency policy, between free_heap_pages
and the new function free_staticmem_pages, which will be introduced later.
Signed-off-by: Penny Zheng
---
v3 changes:
- rename from "free_pag
static memory regions overlap with memory nodes. The
overlapping memory is reserved-memory and should be
handled accordingly:
dt_unreserved_regions should skip these regions the
same way they are already skipping mem-reserved regions.
Signed-off-by: Penny Zheng
---
v3 changes:
- extract common
new CONFIG_STATIC_MEMORY to avoid bringing dead
codes in other archs.
Put asynchronous scrubbing for pages of static memory in TODO list.
Signed-off-by: Penny Zheng
---
v3 change:
- include addition of CONFIG_STATIC_ALLOCATION in this commit, where it
is firstly used and also change the name to
nr_mfns contiguous pages of static memory
and assign them to one specific domain.
It uses acquire_staticmem_pages to acquire nr_mfns pre-configured pages of
static memory, then on success, it will use assign_pages to assign those pages
to one specific domain.
Signed-off-by: Penny Zheng
---
v3 change
This patch introduces a new page flag PGC_reserved in order to differentiate
pages of static memory from those allocated from heap.
Mark pages of static memory PGC_reserved when initializing them.
Signed-off-by: Penny Zheng
---
v3 change:
- introduce PGC_reserved when it is firstly used
, such that the compiler would point out that adjustments at call
sites are needed.
Signed-off-by: Penny Zheng
---
v3 change:
- rename assign_pages_nr to assign_pages
- alter the order of assign_pages parameters
---
xen/arch/x86/pv/dom0_build.c | 2 +-
xen/common/grant_table.c | 2 +-
xen
shall be firstly mapped to the
fixed guest RAM address `GUEST_RAM0_BASE`. And until it exhausts the
`GUEST_RAM0_SIZE`, it will seek to `GUEST_RAM1_BASE`, and so on.
`GUEST_RAM0` may take up several pre-defined physical RAM regions.
Signed-off-by: Penny Zheng
---
v3 changes:
- parse "xen,s
the moment.
Signed-off-by: Penny Zheng
---
v3 change:
- parse "xen,static-mem" in way of phandle back to property
- The return for dt_property_read_u32() shall be checked.
- "memory" property shall be mandatory
---
xen/arch/arm/domain_build.c | 37 +++
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 19, 2021 4:20 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; nd ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject: Re: [PATCH V3 05/10
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 19, 2021 4:41 PM
> To: Penny Zheng ; jul...@xen.org
> Cc: Bertrand Marquis ; Wei Chen
> ; nd ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Subject: Re: [PATCH V3 07/10] xen: re
Hi Jan
> -Original Message-
> From: Jan Beulich
> Sent: Monday, July 19, 2021 5:26 PM
> To: Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; nd ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org; jul...@xen.org
> Subject: Re: [PATCH V3 0
Hi Julien
> -Original Message-
> From: Julien Grall
> Sent: Monday, July 19, 2021 6:00 PM
> To: Jan Beulich ; Penny Zheng
> Cc: Bertrand Marquis ; Wei Chen
> ; nd ; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Subject: Re: [PATCH V3 0
Hi Julien
> -Original Message-
> From: Penny Zheng
> Sent: Thursday, July 15, 2021 1:18 PM
> To: xen-devel@lists.xenproject.org; sstabell...@kernel.org; jul...@xen.org
> Cc: Bertrand Marquis ; Penny Zheng
> ; Wei Chen ;
> jbeul...@suse.com; nd
> Subject:
Hi Julien
> -Original Message-
> From: Penny Zheng
> Sent: Tuesday, July 27, 2021 11:45 AM
> To: jul...@xen.org
> Cc: Bertrand Marquis ; Wei Chen
> ; jbeul...@suse.com; xen-devel@lists.xenproject.org;
> sstabell...@kernel.org
> Subject: RE: [PATCH V3 1
case
- make acquire_staticmem_pages/acquire_domstatic_pages being __init
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
- consider domain on static allocation on NUM
A few functions iterate over the device tree property to get memory info,
like "reg" or "xen,static-mem", so this commit creates a new helper
device_tree_get_meminfo to extract the
common codes.
Signed-off-by: Penny Zheng
---
xen/arch
static memory regions overlap with memory nodes. The
overlapping memory is reserved-memory and should be
handled accordingly:
dt_unreserved_regions should skip these regions the
same way they are already skipping mem-reserved regions.
Signed-off-by: Penny Zheng
---
xen/arch/arm/setup.c | 47
This patch introduces a new page flag PGC_reserved in order to differentiate
pages of static memory from those allocated from heap.
Mark pages of static memory PGC_reserved when initializing them.
Signed-off-by: Penny Zheng
---
xen/common/page_alloc.c | 3 +++
xen/include/asm-arm/mm.h | 3
This commit defines a new helper mark_page_free to extract common code,
like following the same cache/TLB coherency policy, between free_heap_pages
and the new function free_staticmem_pages, which will be introduced later.
Signed-off-by: Penny Zheng
Acked-by: Jan Beulich
---
xen/common
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