On 01.12.22 23:05, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
clang is complaining about a NULL dereference for constructs like:
domain_is_unprivileged(conn) ? conn->in : NULL
I have just build xenstored with clang 11 and didn't get a complain. So can you
On 01.12.22 20:25, Julien Grall wrote:
Hi Juergen,
On 08/11/2022 08:09, Juergen Gross wrote:
On 07.11.22 19:37, Julien Grall wrote:
On 07/11/2022 08:34, Juergen Gross wrote:
On 06.11.22 23:00, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
The accounting for the
On 12.12.2022 23:05, Krister Johansen wrote:
> On Mon, Dec 12, 2022 at 05:46:29PM +0100, Jan Beulich wrote:
>> On 12.12.2022 17:05, Krister Johansen wrote:
>>> Both the Intel SDM[4] and the Xen tsc documentation explain that marking
>>> a tsc as invariant means that it should be considered stable
[AMD Official Use Only - General]
Hi All,
I am Raveendra .Currently I am working on xen hypervisor with Ubuntu 22.04
.Compared to Native ubuntu kernel ,dom0 with xen is taking around 1.8s more to
boot.
I used system-analyze tool for calculating boot time.
Can any body publish the boot time of
On 12.12.2022 23:58, Demi Marie Obenour wrote:
> On Mon, Dec 12, 2022 at 04:19:21PM +0100, Jan Beulich wrote:
>> On 09.12.2022 01:52, Demi Marie Obenour wrote:
>>> This was missed in the initial patchset.
>>>
>>> Signed-off-by: Demi Marie Obenour
>>
>> It looks as if, besides ...
>>
>>> ---
On 13.12.22 07:53, Juergen Gross wrote:
On 01.12.22 22:58, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
static bool check_indexes(XENSTORE_RING_IDX cons, XENSTORE_RING_IDX prod)
@@ -492,8 +504,12 @@ static struct domain
*find_or_alloc_existing_domain(unsigned
On 01.12.22 22:58, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
static bool check_indexes(XENSTORE_RING_IDX cons, XENSTORE_RING_IDX prod)
@@ -492,8 +504,12 @@ static struct domain
*find_or_alloc_existing_domain(unsigned int domid)
xc_dominfo_t dominfo;
On 01.12.22 22:51, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
@@ -324,8 +312,7 @@ const char *dump_state_watches(FILE *fp, struct connection
*conn,
head.length = sizeof(sw);
sw.conn_id = conn_id;
- path = get_watch_path(watch,
flight 175155 xen-4.16-testing real [real]
flight 175160 xen-4.16-testing real-retest [real]
http://logs.test-lab.xenproject.org/osstest/logs/175155/
http://logs.test-lab.xenproject.org/osstest/logs/175160/
Failures :-/ but no regressions.
Tests which are failing intermittently (not blocking):
flight 175156 xen-unstable-smoke real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175156/
Failures :-/ but no regressions.
Tests which did not succeed, but are not blocking:
test-amd64-amd64-libvirt 15 migrate-support-checkfail never pass
test-arm64-arm64-xl-xsm
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> At the moment, switch_ttbr() is switching the TTBR whilst the MMU is
> still on.
>
> Switching TTBR is like replacing existing mappings with new ones. So
> we need to follow the break-before-make sequence.
>
> In this case, it
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> At the moment, we are only checking that only some part of .text.header
> is part of the identity mapping. However, this doesn't take into account
> the litteral pool which will be located at the end of the section.
^
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> _stext is indented by one space more compare to the lines. This doesn't
> seem warrant, so delete the extra space.
>
> Signed-off: Julien Grall
Acked-by: Stefano Stabellini
> ---
> Changes in v3:
> - Patch added
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> In follow-up patches we will need to have part of Xen identity mapped in
> order to safely switch the TTBR.
>
> On some platform, the identity mapping may have to start at 0. If we always
> keep the identity region mapped, NULL
On Tue, Dec 06, 2022 at 07:12:06PM +0100, Marek Marczykowski-Górecki wrote:
> On Tue, Dec 06, 2022 at 01:01:41PM -0500, Demi Marie Obenour wrote:
> > On Tue, Dec 06, 2022 at 11:38:03AM +, Andrew Cooper wrote:
> > > On 06/12/2022 04:33, Demi Marie Obenour wrote:
> > > > This is purely for
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> dump_hyp_walk() is used to print the tables walk in case of the data or
> instruction abort.
>
> Those abort are not limited to the runtime and could happen at early
> boot. However, the current implementation of dump_hyp_walk()
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> At the moment, xen_pt_update() will only work on the runtime page tables.
> In follow-up patches, we will also want to use the helper to update
> the boot page tables.
>
> All the existing callers of xen_pt_update() expects to
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> Xen is currently not fully compliant with the Arm Arm because it will
> switch the TTBR with the MMU on.
>
> In order to be compliant, we need to disable the MMU before
> switching the TTBR. The implication is the page-tables
flight 175154 xen-unstable real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175154/
Regressions :-(
Tests which did not succeed and are blocking,
including tests which could not be run:
test-amd64-i386-livepatch 8 xen-boot fail REGR. vs. 175144
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> At the moment, dump_pt_walk() is using map_domain_page() to map
> the page tables.
>
> map_domain_page() is only usuable after init_domheap_mappings() is called
> (arm32) or the xenheap has been initialized (arm64).
>
> This
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> At the moment, enable_mmu() will return to an address in the 1:1 mapping
> and each path is responsible to switch to the runtime mapping.
>
> In a follow-up patch, the behavior to switch to the runtime mapping
> will become more
On Mon, 12 Dec 2022, Julien Grall wrote:
> From: Julien Grall
>
> "ldr rX, =" is used to load a value from the literal pool. This
> implies a memory access.
>
> This can be avoided by using the macro mov_w which encode the value in
> the immediate of two instructions.
>
> So replace all "ldr
flight 175153 linux-linus real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175153/
Regressions :-(
Tests which did not succeed and are blocking,
including tests which could not be run:
test-arm64-arm64-examine 8 reboot fail REGR. vs. 173462
On Mon, Dec 12, 2022 at 04:19:21PM +0100, Jan Beulich wrote:
> On 09.12.2022 01:52, Demi Marie Obenour wrote:
> > This was missed in the initial patchset.
> >
> > Signed-off-by: Demi Marie Obenour
>
> It looks as if, besides ...
>
> > --- a/xen/arch/x86/efi/efi-boot.h
> > +++
Hi Vipul,
I am online on IRC OFTC #xendevel (https://www.oftc.net/, you need a
registered nickname to join #xendevel).
For development and debugging I find that it is a lot easier to
crosscompile the kernel "by hand", and do a monolithic build, rather
than going through Yocto.
For instance the
On Mon, Dec 12, 2022 at 01:48:24PM -0500, Boris Ostrovsky wrote:
>
> On 12/12/22 11:05 AM, Krister Johansen wrote:
> >
> > diff --git a/arch/x86/include/asm/xen/cpuid.h
> > b/arch/x86/include/asm/xen/cpuid.h
> > index 6daa9b0c8d11..d9d7432481e9 100644
> > --- a/arch/x86/include/asm/xen/cpuid.h
On Mon, Dec 12, 2022 at 05:46:29PM +0100, Jan Beulich wrote:
> On 12.12.2022 17:05, Krister Johansen wrote:
> > Both the Intel SDM[4] and the Xen tsc documentation explain that marking
> > a tsc as invariant means that it should be considered stable by the OS
> > and is elibile to be used as a
On Sat, 10 Dec 2022, Henry Wang wrote:
> Hi both,
>
> I was lurking around to see how the discussion would go. Thanks for the
> discussions/inputs in this thread :)
>
> > -Original Message-
> > From: Stefano Stabellini
> > Subject: Re: [PATCH 1/3] xen/arm: Add memory overlap check for
The pull request you sent on Mon, 12 Dec 2022 07:24:30 +0100:
> git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
> for-linus-6.2-rc1-tag
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/e6b160bc4daa1227695ef807e11097a3e9934d66
Thank you!
--
Deet-doot-dot, I
On 12/12/2022 19:04, Ayan Kumar Halder wrote:
On 09/12/2022 19:19, Julien Grall wrote:
Hi Ayan,
Hi Julien,
Hi,
I checked with the Zephyr mantainers. Their response is provided [1].
Thanks for checking.
On 09/12/2022 19:10, Ayan Kumar Halder wrote:
zImage and Image are image
On 09/12/2022 19:19, Julien Grall wrote:
Hi Ayan,
Hi Julien,
I checked with the Zephyr mantainers. Their response is provided [1].
On 09/12/2022 19:10, Ayan Kumar Halder wrote:
zImage and Image are image protocols, uImage is not. It is just a
legacy u-boot header (no requirements
\wrt
On 12/12/22 11:05 AM, Krister Johansen wrote:
diff --git a/arch/x86/include/asm/xen/cpuid.h b/arch/x86/include/asm/xen/cpuid.h
index 6daa9b0c8d11..d9d7432481e9 100644
--- a/arch/x86/include/asm/xen/cpuid.h
+++ b/arch/x86/include/asm/xen/cpuid.h
@@ -88,6 +88,12 @@
* EDX: shift
/proc/xen is a legacy pseudo filesystem which predates Xen support
getting merged into Linux. It has largely been replaced with more
normal locations for data (/sys/hypervisor/ for info, /dev/xen/ for
user devices). We want to compile xenfs support out of the dom0 kernel.
There is one item
On 10.11.2022 17:59, David Vrabel wrote:
> Concurrent access the the MSI-X control register are not serialized
> with a suitable lock. For example, in msix_capability_init() access
> use the pcidevs_lock() but some calls to msi_set_mask_bit() use the
> interrupt descriptor lock.
>
> This can lead
On 12.12.2022 17:05, Krister Johansen wrote:
> Kvm elects to use tsc instead of kvm-clock when it can detect that the
> TSC is invariant.
>
> (As of commit 7539b174aef4 ("x86: kvmguest: use TSC clocksource if
> invariant TSC is exposed")).
>
> Notable cloud vendors[1] and performance
On Mon, Dec 12, 2022 at 12:10 PM Viresh Kumar
wrote:
Hello Viresh
[sorry for the possible format issues]
This patch adds basic support for configuring and assisting generic
> Virtio backends, which could run in any domain.
>
> An example of domain configuration for mmio based Virtio I2C
On 08.12.2022 14:26, Sergey Dyasli wrote:
> --- a/xen/arch/x86/cpu/microcode/core.c
> +++ b/xen/arch/x86/cpu/microcode/core.c
> @@ -198,7 +198,7 @@ void __init microcode_scan_module(
> bootstrap_map(NULL);
> }
> }
> -void __init microcode_grab_module(
> +static void __init
Hi Julien,
> On 12 Dec 2022, at 4:07 pm, Julien Grall wrote:
>
> Hi Stewart,
>
> On 12/12/2022 16:00, Stewart Hildebrand wrote:
>> When building with clang 12 and CONFIG_ARM_SMMU_V3=y, we observe the
>> following build error:
>> drivers/passthrough/arm/smmu-v3.c:1408:20: error: unused function
Hi Stewart,
On 12/12/2022 16:00, Stewart Hildebrand wrote:
When building with clang 12 and CONFIG_ARM_SMMU_V3=y, we observe the
following build error:
drivers/passthrough/arm/smmu-v3.c:1408:20: error: unused function
'arm_smmu_disable_pasid' [-Werror,-Wunused-function]
static inline void
Kvm elects to use tsc instead of kvm-clock when it can detect that the
TSC is invariant.
(As of commit 7539b174aef4 ("x86: kvmguest: use TSC clocksource if
invariant TSC is exposed")).
Notable cloud vendors[1] and performance engineers[2] recommend that Xen
users preferentially select tsc over
On 12.12.2022 16:18, Andrew Cooper wrote:
> On 12/12/2022 14:59, Jan Beulich wrote:
>> On 12.12.2022 15:27, Sergey Dyasli wrote:
>>> On Thu, Dec 8, 2022 at 3:34 PM Jan Beulich wrote:
On 08.12.2022 14:59, Andrew Cooper wrote:
> On 08/12/2022 13:26, Sergey Dyasli wrote:
>> @@ -240,20
On Mon, Dec 12, 2022 at 03:35:55PM +0530, Viresh Kumar wrote:
> This patch updates xl.cfg man page with details of generic Virtio device
> related information.
>
> Signed-off-by: Viresh Kumar
Reviewed-by: Anthony PERARD
Thanks,
--
Anthony PERARD
When building with clang 12 and CONFIG_ARM_SMMU_V3=y, we observe the
following build error:
drivers/passthrough/arm/smmu-v3.c:1408:20: error: unused function
'arm_smmu_disable_pasid' [-Werror,-Wunused-function]
static inline void arm_smmu_disable_pasid(struct arm_smmu_master *master) { }
On Fri, Dec 09, 2022 at 02:32:15PM -0500, Boris Ostrovsky wrote:
>
> On 12/8/22 11:36 AM, Krister Johansen wrote:
> > + /*
> > +* As Dom0 is never moved, no penalty on using TSC there.
> > +*
> > +* If the guest has invariant tsc, then set xen_clocksource rating
> > +* below
On Mon, Dec 12, 2022 at 03:35:54PM +0530, Viresh Kumar wrote:
> diff --git a/tools/ocaml/libs/xl/genwrap.py b/tools/ocaml/libs/xl/genwrap.py
> index 7bf26bdcd831..b188104299b1 100644
> --- a/tools/ocaml/libs/xl/genwrap.py
> +++ b/tools/ocaml/libs/xl/genwrap.py
> @@ -36,6 +36,7 @@ DEVICE_LIST =
On Mon, Dec 12, 2022 at 03:35:53PM +0530, Viresh Kumar wrote:
> This patch adds basic support for configuring and assisting generic
> Virtio backends, which could run in any domain.
>
> An example of domain configuration for mmio based Virtio I2C device is:
> virtio =
On 08.12.2022 14:26, Sergey Dyasli wrote:
> @@ -648,7 +648,7 @@ static long cf_check microcode_update_helper(void *data)
> * this requirement can be relaxed in the future. Right now, this is
> * conservative and good.
> */
> -ret = stop_machine_run(do_microcode_update,
On 09.12.2022 01:52, Demi Marie Obenour wrote:
> This was missed in the initial patchset.
>
> Signed-off-by: Demi Marie Obenour
It looks as if, besides ...
> --- a/xen/arch/x86/efi/efi-boot.h
> +++ b/xen/arch/x86/efi/efi-boot.h
> @@ -818,6 +818,8 @@ void __init efi_multiboot2(EFI_HANDLE
On 12/12/2022 14:59, Jan Beulich wrote:
> On 12.12.2022 15:27, Sergey Dyasli wrote:
>> On Thu, Dec 8, 2022 at 3:34 PM Jan Beulich wrote:
>>> On 08.12.2022 14:59, Andrew Cooper wrote:
On 08/12/2022 13:26, Sergey Dyasli wrote:
> @@ -240,20 +240,20 @@ static const struct microcode_patch
On 12.12.2022 15:27, Sergey Dyasli wrote:
> On Thu, Dec 8, 2022 at 3:34 PM Jan Beulich wrote:
>> On 08.12.2022 14:59, Andrew Cooper wrote:
>>> On 08/12/2022 13:26, Sergey Dyasli wrote:
@@ -240,20 +240,20 @@ static const struct microcode_patch *nmi_patch =
ZERO_BLOCK_PTR;
* patch
On Thu, Dec 8, 2022 at 3:34 PM Jan Beulich wrote:
>
> On 08.12.2022 14:59, Andrew Cooper wrote:
> > On 08/12/2022 13:26, Sergey Dyasli wrote:
> >> @@ -240,20 +240,20 @@ static const struct microcode_patch *nmi_patch =
> >> ZERO_BLOCK_PTR;
> >> * patch is found and an error occurs during the
Julien Grall writes ("[PATCH 2/8] docs/process: branching-checklist: Remove
reference to qemu-ijw.git"):
> From: Julien Grall
>
> Per [1], qemu-iwj.git was a clone of QEMU traditional on Ian's computer
> for tagging QEMU trad.
>
> The next section will provide tag for the official tree. So
flight 175152 xen-unstable-smoke real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175152/
Failures :-/ but no regressions.
Tests which did not succeed, but are not blocking:
test-amd64-amd64-libvirt 15 migrate-support-checkfail never pass
test-arm64-arm64-xl-xsm
flight 175150 linux-linus real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175150/
Regressions :-(
Tests which did not succeed and are blocking,
including tests which could not be run:
test-arm64-arm64-examine 8 reboot fail REGR. vs. 173462
On 09/12/2022 09:04, Juergen Gross wrote:
> On 02.12.22 19:22, Per Bilse wrote:
>> +Description: If running under Xen:
>> + All bits in Xen's start-flags are represented as
>> + boolean files, returning '1' if set, '0' otherwise.
>
> I think at least the files which want to be
Hello,
Gentle ping regarding the locking question below.
Thanks, Roger.
On Fri, Dec 02, 2022 at 12:40:05PM +0100, Roger Pau Monné wrote:
> On Wed, Nov 30, 2022 at 05:08:06PM -0800, Stefano Stabellini wrote:
> > On Wed, 30 Nov 2022, Roger Pau Monne wrote:
> > > The hvc machinery registers both a
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> Make clear the patchbot is accessible from the user "xen" on xenbits.
>
> Signed-off-by: Julien Grall
>
Acked-by: George Dunlap
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> The cambridge colo was internal to Citrix (now Cloud) and hasn't been used
> by the community for a while.
>
> So remove the section.
>
> Signed-off-by: Julien Grall
>
Acked-by: George Dunlap
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> Since at least Xen 4.12, the revision for external trees don't contain
> the word "unstable". So explicitely list the *_REVISION variables that
> need to be updated as part of the branching process.
>
> Signed-off-by:
On 01.12.22 22:34, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
@@ -341,49 +339,56 @@ static bool get_domain_info(unsigned int domid,
xc_dominfo_t *dominfo)
dominfo->domid == domid;
}
-void check_domains(void)
+static int check_domain(void *k, void
Hi Juergen,
On 12/12/2022 12:08, Juergen Gross wrote:
On 01.12.22 22:34, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
@@ -341,49 +339,56 @@ static bool get_domain_info(unsigned int domid,
xc_dominfo_t *dominfo)
dominfo->domid == domid;
}
-void
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> The steps to generate the documentation for the new branch requires
> to ssh as root and then su to run with the user xendocs.
>
> The release technician may not (and should not) have access to root.
> So update the
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> Per [1], qemu-iwj.git was a clone of QEMU traditional on Ian's computer
> for tagging QEMU trad.
>
> The next section will provide tag for the official tree. So remove
> the section about qemu-ijw.git.
>
> [1]
On 01.12.22 22:34, Julien Grall wrote:
Hi Juergen,
On 01/11/2022 15:28, Juergen Gross wrote:
@@ -341,49 +339,56 @@ static bool get_domain_info(unsigned int domid,
xc_dominfo_t *dominfo)
dominfo->domid == domid;
}
-void check_domains(void)
+static int check_domain(void *k, void
On Mon, Dec 12, 2022 at 9:34 AM Julien Grall wrote:
> From: Julien Grall
>
> At the moment, branch-checklist.txt is using a mix of soft and hard
> tab. They are both meant to be represented using 8 characters.
>
> In Xen we tend to use 4-space softtab represented with 4 characters. So
> to
On Sun, Dec 11, 2022 at 06:59:49PM +0100, Marek Marczykowski-Górecki wrote:
> Use abort() instead of just _exit() in libxl__alloc_failed(). This
> is more friendly for debugging, as it will trap into debugger,
> systemd-coredump will collect coredump/backtrace etc. It's much more
> useful than
On 12/12/22 04:36, Julien Grall wrote:
From: Julien Grall
The array initial_sid_to_string is storing pointer to literal strings
and is not meant to be modified. So change the type of the variable
to "const char * const ...[]".
Signed-off-by: Julien Grall
---
xen/xsm/flask/policy/mkflask.sh
Hi Julien,
> -Original Message-
> From: Julien Grall
> Subject: Re: [PATCH] xen/arm: Reduce redundant clear root pages when
> teardown p2m
>
> Hi Henry,
>
> > PROGRESS(p2m):
> > +/*
> > + * We are about to free the intermediate page-tables, so clear the
> > +
Hi Henry,
On 12/12/2022 06:41, Henry Wang wrote:
Currently, p2m for a domain will be teardown from two paths:
(1) The normal path when a domain is destroyed.
(2) The arch_domain_destroy() in the failure path of domain creation.
When tearing down p2m from (1), the part to clear and clean the
On Fri, Dec 09, 2022 at 11:11:29AM +0100, Jan Beulich wrote:
> On 09.12.2022 10:59, Roger Pau Monné wrote:
> > On Thu, Dec 08, 2022 at 12:24:54PM +0100, Jan Beulich wrote:
> >> --- a/xen/arch/x86/msr.c
> >> +++ b/xen/arch/x86/msr.c
> >> @@ -699,12 +699,16 @@ int guest_wrmsr(struct vcpu *v,
From: Julien Grall
Xen is currently not fully compliant with the Arm Arm because it will
switch the TTBR with the MMU on.
In order to be compliant, we need to disable the MMU before
switching the TTBR. The implication is the page-tables should
contain an identity mapping of the code switching
From: Julien Grall
dump_hyp_walk() is used to print the tables walk in case of the data or
instruction abort.
Those abort are not limited to the runtime and could happen at early
boot. However, the current implementation of dump_hyp_walk() check
that the TTBR matches the runtime page tables.
From: Julien Grall
In follow-up patches we will need to have part of Xen identity mapped in
order to safely switch the TTBR.
On some platform, the identity mapping may have to start at 0. If we always
keep the identity region mapped, NULL pointer dereference would lead to
access to valid
From: Julien Grall
At the moment, we are only checking that only some part of .text.header
is part of the identity mapping. However, this doesn't take into account
the litteral pool which will be located at the end of the section.
While we could try to avoid using a literal pool, in the near
From: Julien Grall
At the moment, dump_pt_walk() is using map_domain_page() to map
the page tables.
map_domain_page() is only usuable after init_domheap_mappings() is called
(arm32) or the xenheap has been initialized (arm64).
This means it can be hard to diagnose incorrect page-tables during
From: Julien Grall
_stext is indented by one space more compare to the lines. This doesn't
seem warrant, so delete the extra space.
Signed-off: Julien Grall
---
Changes in v3:
- Patch added
---
xen/arch/arm/xen.lds.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff
From: Julien Grall
At the moment, switch_ttbr() is switching the TTBR whilst the MMU is
still on.
Switching TTBR is like replacing existing mappings with new ones. So
we need to follow the break-before-make sequence.
In this case, it means the MMU needs to be switched off while the
TTBR is
From: Julien Grall
At the moment, the temporary mapping is only used when the virtual
runtime region of Xen is clashing with the physical region.
In follow-up patches, we will rework how secondary CPU bring-up works
and it will be convenient to use the fixmap area for accessing
the root
From: Julien Grall
At the moment, xen_pt_update() will only work on the runtime page tables.
In follow-up patches, we will also want to use the helper to update
the boot page tables.
All the existing callers of xen_pt_update() expects to modify the
current page-tables. Therefore, we can read
On 09.12.2022 22:42, Andrew Cooper wrote:
> We can relocate Xen by reading out of the virtual mapping that we're executing
> on, and write directly into the directmap. In fact, this removes one
> dependency on Xen being "at 0" (the XEN_IMG_OFFSET passed as src) for
> relocation to occur.
>
>
This patch adds basic support for parsing generic Virtio backend.
An example of domain configuration for mmio based Virtio I2C device is:
virtio = ["type=virtio,device22,transport=mmio"]
Signed-off-by: Viresh Kumar
---
tools/ocaml/libs/xl/genwrap.py | 1 +
tools/xl/xl_parse.c| 81
Hello,
This patchset adds toolstack support for I2C, GPIO and generic virtio devices.
This is inspired from the work done by Oleksandr for the Disk device.
This is developed as part of Linaro's Project Stratos, where we are working
towards Hypervisor agnostic Rust based backends [1].
This is
This patch updates xl.cfg man page with details of generic Virtio device
related information.
Signed-off-by: Viresh Kumar
---
docs/man/xl.cfg.5.pod.in | 33 +
1 file changed, 33 insertions(+)
diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in
index
This patch adds basic support for configuring and assisting generic
Virtio backends, which could run in any domain.
An example of domain configuration for mmio based Virtio I2C device is:
virtio = ["type=virtio,device22,transport=mmio"]
To make this work on Arm, allocate Virtio MMIO params (IRQ
On 12.12.2022 10:49, Henry Wang wrote:
>> -Original Message-
>> From: Julien Grall
>> Subject: [PATCH 0/8] docs/process: branching-checklist: Update it
>>
>> From: Julien Grall
>>
>> This is a collection of improvement for the branching checklist.
>
> Thanks for this work! Since from
From: Julien Grall
At the moment, enable_mmu() will return to an address in the 1:1 mapping
and each path is responsible to switch to the runtime mapping.
In a follow-up patch, the behavior to switch to the runtime mapping
will become more complex. So to avoid more code/comment duplication,
From: Julien Grall
At the moment, bootloaders can load Xen anywhere in memory but the
region 2MB - 4MB. While I am not aware of any issue, we have no way
to tell the bootloader to avoid that region.
In addition to that, in the future, Xen may grow over 2MB if we
enable feature like UBSAN or
From: Julien Grall
In a follow-up patch, the base address for the common mappings will
vary between arm32 and arm64. To avoid any duplication, define
every mapping in the common region from the previous one.
Take the opportunity to:
* add missing *_SIZE for FIXMAP_VIRT_* and XEN_VIRT_*
From: Julien Grall
"ldr rX, =" is used to load a value from the literal pool. This
implies a memory access.
This can be avoided by using the macro mov_w which encode the value in
the immediate of two instructions.
So replace all "ldr rX, =" with "mov_w rX, ".
No functional changes intended.
From: Julien Grall
Per G5-9224 in ARM DDI 0487I.a:
"A DSB NSH is sufficient to ensure completion of TLB maintenance
instructions that apply to a single PE. A DSB ISH is sufficient to
ensure completion of TLB maintenance instructions that apply to PEs
in the same Inner Shareable domain.
"
From: Julien Grall
The sequence for flushing the TLBs is 4 instruction long and often
requires an explanation how it works.
So create an helper and use it in the boot code (switch_ttbr() is left
alone for now).
Note that in secondary_switched, we were also flushing the instruction
cache and
From: Julien Grall
At the moment, flush_xen_tlb_range_va{,_local}() are using system
wide memory barrier. This is quite expensive and unnecessary.
For the local version, a non-shareable barrier is sufficient.
For the SMP version, a inner-shareable barrier is sufficient.
Furthermore, the
From: Julien Grall
Looking at the Neoverse N1 errata document, it is not clear to me
why the TLBI repeat workaround is not applied for TLB flush by VA.
The TBL flush by VA helpers are used in flush_xen_tlb_range_va_local()
and flush_xen_tlb_range_va(). So if the range size if a fixed size
From: Julien Grall
Per D5-4929 in ARM DDI 0487H.a:
"A DSB NSH is sufficient to ensure completion of TLB maintenance
instructions that apply to a single PE. A DSB ISH is sufficient to
ensure completion of TLB maintenance instructions that apply to PEs
in the same Inner Shareable domain.
"
From: Julien Grall
Hi all,
Currently, Xen on Arm will switch TTBR whilst the MMU is on. This is
similar to replacing existing mappings with new ones. So we need to
follow a break-before-make sequence.
When switching the TTBR, we need to temporary disable the MMU
before updating the TTBR. This
From: Julien Grall
Hi all,
Currently, Xen on Arm will switch TTBR whilst the MMU is on. This is
similar to replacing existing mappings with new ones. So we need to
follow a break-before-make sequence.
When switching the TTBR, we need to temporary disable the MMU
before updating the TTBR. This
Hi Julien,
> -Original Message-
> From: Julien Grall
> Subject: [PATCH 0/8] docs/process: branching-checklist: Update it
>
> From: Julien Grall
>
> Hi all,
>
> This is a collection of improvement for the branching checklist.
Thanks for this work! Since from the docs/process/RUBRIC
From: Julien Grall
The array initial_sid_to_string is storing pointer to literal strings
and is not meant to be modified. So change the type of the variable
to "const char * const ...[]".
Signed-off-by: Julien Grall
---
xen/xsm/flask/policy/mkflask.sh | 2 +-
1 file changed, 1 insertion(+), 1
From: Julien Grall
Since at least Xen 4.12, the revision for external trees don't contain
the word "unstable". So explicitely list the *_REVISION variables that
need to be updated as part of the branching process.
Signed-off-by: Julien Grall
---
docs/process/branching-checklist.txt | 8
From: Julien Grall
The checklist requires to have access to several accounts on both
xenbits and osstest. List those accounts at the beginning of the file
so it is easier to check if one has the permissions before starting
the branching process.
Signed-off-by: Julien Grall
---
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