On Tue, Oct 08, 2024 at 03:47:41PM +0200, Jan Beulich wrote:
> On 07.10.2024 16:34, Matthew Barnes wrote:
> > --- a/xen/arch/x86/include/asm/genapic.h
> > +++ b/xen/arch/x86/include/asm/genapic.h
> > @@ -44,29 +44,11 @@ extern const struct genapic apic_bigsm
/194
Signed-off-by: Matthew Barnes
---
Changes in v2:
- Reword commit message
- Expand and delete GENAPIC_* macros
- Bundle patch series into one patch
---
xen/arch/x86/genapic/bigsmp.c | 8 +++-
xen/arch/x86/genapic/default.c | 8 +++-
xen/arch/x86/genapic/delivery.c| 10
Resolves: https://gitlab.com/xen-project/xen/-/issues/194
Signed-off-by: Matthew Barnes
---
xen/arch/x86/include/asm/genapic.h | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/xen/arch/x86/include/asm/genapic.h
b/xen/arch/x86/include/asm/genapic.h
index
Now that GENAPIC_FLAT uses physical destination for external interrupts,
these functions implementing logical flat for external interrupts are no
longer used.
No functional change.
Signed-off-by: Matthew Barnes
---
xen/arch/x86/genapic/delivery.c| 10 --
xen/arch/x86/include/asm
This patch series switches the apic_default APIC driver from using
logical flat destination mode for external interrupts, to using
physical destination mode for external interrupts.
This is followed up by two non-functional cleanup commits.
Matthew Barnes (3):
x86/APIC: Switch flat driver to
The macro name is changed to somewhat mirror x2apic driver code,
as logical flat is no longer used for external interrupts for this
mode.
No functional change.
Signed-off-by: Matthew Barnes
---
xen/arch/x86/genapic/default.c | 2 +-
xen/arch/x86/include/asm/genapic.h | 2 +-
2 files
https://gitlab.com/xen-project/xen/-/issues/189
Signed-off-by: Matthew Barnes
---
CHANGELOG.md | 1 +
docs/misc/xen-command-line.pandoc | 4 +--
xen/arch/x86/Kconfig | 12
xen/arch/x86/genapic/x2apic.c | 50 +++
4 files chang
Upon running `xen-cpuid -v` on a host machine with Sapphire Rapids
within Dom0, there exist unrecognised features.
This patch adds these features as macros to the CPU featureset,
disabled by default.
Signed-off-by: Matthew Barnes
---
Changes in v2:
- Remove MONITOR / UMONITOR features in
Upon running `xen-cpuid -d` on a host machine with Sapphire Rapids
within Dom0, there exist unrecognised features.
This patch adds these features as macros to the CPU featureset,
disabled by default.
Signed-off-by: Matthew Barnes
---
xen/include/public/arch-x86/cpufeatureset.h | 12
breakpoints for PV guests such
that they reproduce the same behaviour as hardware.
Fixes: bec9e3205018 ("x86: emulate I/O port access breakpoints")
Signed-off-by: Matthew Barnes
---
Changes in v2:
- Refactor breakpoint port masking to be more succinct
- Add 'Fixes' line to com
breakpoints for PV guests such
that they reproduce the same behaviour as hardware.
Signed-off-by: Matthew Barnes
---
xen/arch/x86/pv/emul-priv-op.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/xen/arch/x86/pv/emul-priv-op.c b/xen/arch/x86/pv/emul-priv-op.c
index
distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
Changes in v7:
- All error paths return error code 1 from lsevtchn
- Simplify perror message to failing function "xc_evtchn_s
distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
Changes in v6:
- Add blank space before label
Changes in v5:
- Code style changes to switch statement
Changes in v4:
- Catch non
distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
Changes in v5:
- Code style changes to switch statement
Changes in v4:
- Catch non-critical errors and fail on everything else, instead
On Mon, Jul 29, 2024 at 09:58:46AM +0200, Jan Beulich wrote:
> On 26.07.2024 18:40, Matthew Barnes wrote:
> > @@ -24,7 +25,23 @@ int main(int argc, char **argv)
> > status.port = port;
> > rc = xc_evtchn_status(xch, &status);
> > if (
distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
Changes in v4:
- Catch non-critical errors and fail on everything else, instead of
catching few known critical errors and ignoring
On Wed, Jul 24, 2024 at 07:42:19AM +0200, Jan Beulich wrote:
> (re-adding xen-devel@)
>
> On 23.07.2024 14:57, Matthew Barnes wrote:
> > On Mon, Jul 22, 2024 at 01:37:11PM +0200, Jan Beulich wrote:
> >> On 19.07.2024 16:21, Matthew Barnes wrote:
> >>> Curre
itself up appropriately at
run-time.
GitLab ticket: https://gitlab.com/xen-project/xen/-/issues/191
For OVMF to access the maximum vCPU count, this patch has Xen expose
the maximum vCPU ID via cpuid on the HVM hypervisor leaf in edx.
Signed-off-by: Matthew Barnes
---
Changes in v2:
- Tweak value
On Tue, Jul 09, 2024 at 08:40:18AM +0200, Jan Beulich wrote:
> On 08.07.2024 17:42, Matthew Barnes wrote:
> > Currently, OVMF is hard-coded to set up a maximum of 64 vCPUs on
> > startup.
> >
> > There are efforts to support a maximum of 128 vCPUs, which would i
vtchn missing potential relevant event channels with
higher port numbers.
Use the errno macro to distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
tools/xcutils/lsevtchn.c
: https://gitlab.com/xen-project/xen/-/issues/191
Signed-off-by: Matthew Barnes
---
xen/arch/x86/traps.c| 4
xen/include/public/arch-x86/cpuid.h | 3 +++
2 files changed, 7 insertions(+)
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index ee91fc56b125..b439ee94f562
invoking memdumps from Windows and Linux
domains.
This patch modifies the xen-hvmcrash tool to inject #DF to all vCPUs
belonging to the specified domain, instead of overwriting RIP.
Signed-off-by: Matthew Barnes
---
Changes in v3:
- Keep xc_domain_{un,}pause() calls
- Update xen-hvmcrash comment to
invoking memdumps from Windows and Linux
domains.
This patch modifies the xen-hvmcrash tool to inject #DF to all vCPUs
belonging to the specified domain, instead of overwriting RIP.
Signed-off-by: Matthew Barnes
---
Changes in v2:
- Use xendevicemodel API instead of legacy devicemodel API
- Return
On Tue, Jun 25, 2024 at 10:02:42PM +0100, Andrew Cooper wrote:
> On 03/06/2024 3:59 pm, Matthew Barnes wrote:
> > xen-hvmcrash would previously save records, overwrite the instruction
> > pointer with a bogus value, and then restore them to crash a domain
> > just enough to
On Fri, Jun 21, 2024 at 03:38:36PM +, Anthony PERARD wrote:
> On Mon, Jun 03, 2024 at 03:59:18PM +0100, Matthew Barnes wrote:
> > diff --git a/tools/misc/xen-hvmcrash.c b/tools/misc/xen-hvmcrash.c
> > index 1d058fa40a47..8ef1beb388f8 100644
> > --- a/tools/misc/xen-hvmcr
There exists bitshifts in the IOAPIC code where signed integers are
shifted to the left by up to 31 bits, which is undefined behaviour.
This patch fixes this by changing the integers from signed to unsigned.
Signed-off-by: Matthew Barnes
Reviewed-by: Jan Beulich
---
Changes in v2:
- Correct
: Matthew Barnes
---
xen/arch/x86/io_apic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/io_apic.c b/xen/arch/x86/io_apic.c
index b48a64246548..ae88b1b898fe 100644
--- a/xen/arch/x86/io_apic.c
+++ b/xen/arch/x86/io_apic.c
@@ -1756,7 +1756,7 @@ static void cf_check
invoking memdumps from Windows and Linux
domains.
This patch modifies the xen-hvmcrash tool to inject #DF to all vCPUs
belonging to the specified domain, instead of overwriting RIP.
Signed-off-by: Matthew Barnes
---
tools/misc/xen-hvmcrash.c | 77 +++
1 file changed
vtchn missing potential relevant event channels with
higher port numbers.
Use the errno macro to distinguish between hypercall errors, and
continue event channel enumeration if the hypercall error is not
critical to enumeration.
Signed-off-by: Matthew Barnes
---
tools/xcutils/lsevtchn.c
.
Add error status indicators for the eventchn_status hypercall for
lsevtchn to terminate its loop on, and keep other errors as failed
hypercalls.
Signed-off-by: Matthew Barnes
---
xen/common/event_channel.c | 12 +++-
xen/include/public/event_channel.h | 2 ++
2 files changed, 13
over.
Matthew Barnes (2):
evtchn: Add error status indicators for evtchn_status hypercall
tools/lsevtchn: Use new status identifiers in loop
tools/xcutils/lsevtchn.c | 11 ++-
xen/common/event_channel.c | 12 +++-
xen/include/public/event_channel.h | 2 ++
3
" and
"domain invalid", to determine when to break the loop.
Signed-off-by: Matthew Barnes
---
tools/xcutils/lsevtchn.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/tools/xcutils/lsevtchn.c b/tools/xcutils/lsevtchn.c
index d1710613ddc5..4a48620cd72
over.
Signed-off-by: Matthew Barnes
---
tools/xcutils/lsevtchn.c | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/xcutils/lsevtchn.c b/tools/xcutils/lsevtchn.c
index d1710613ddc5..7f8ad7c8e7ce 100644
--- a/tools/xcutils/lsevtchn.c
+++ b/tools/xcutils/lsevtchn.c
mbers.
This patch series adds the highest allocated event channel port for a
given domain in the xen_domctl_getdomaininfo hypercall struct, and uses
that value as an upper bound in the lsevtchn loop.
Matthew Barnes (2):
xen/domctl: Add highest allocated evtchn port to getdomaininfo
tools/lse
.
Signed-off-by: Matthew Barnes
---
xen/common/domctl.c | 1 +
xen/include/public/domctl.h | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index 43b0b074c3a6..1d1ee17f6f91 100644
--- a/xen/common/domctl.c
+++ b/xen/common
On Tue, Mar 26, 2024 at 05:15:46PM +0100, Jan Beulich wrote:
> On 26.03.2024 16:57, Matthew Barnes wrote:
> >>> This patch scans each APIC ID before constructing the MADT, and uses the
> >>> x2APIC entry for each vCPU whose APIC ID exceeds the size limit imposed
&g
> > This patch scans each APIC ID before constructing the MADT, and uses the
> > x2APIC entry for each vCPU whose APIC ID exceeds the size limit imposed
> > by regular APIC entries.
>
> It is my understanding that if you use any x2APIC entry, every CPU needs
> to have one.
In the ACPI 6.4 specifi
Last Branch Record and Bus Lock Detect both belong to the same MSR.
The same mechanism that restores LBR also restores BLD.
Therefore, the name of the feature that enables this mechanism should
reflect restoring the MSR, instead of one field.
No functional change.
Signed-off-by: Matthew Barnes
generally
restoring the MSR, instead of only one field.
Matthew Barnes (2):
x86: Enable BLD and handle #DB traps
x86: Refactor LBR feature into general MSR_DEBUGCTL feature
xen/arch/x86/cpu/common.c | 5 +
xen/arch/x86/hvm/vmx/entry.S | 6 +++---
xen/arch/x86/include
-coding it.
Signed-off-by: Matthew Barnes
---
xen/arch/x86/cpu/common.c| 5 +
xen/arch/x86/hvm/vmx/entry.S | 2 +-
xen/arch/x86/include/asm/debugreg.h | 1 +
xen/arch/x86/include/asm/msr-index.h | 1 +
xen/arch/x86/include/asm/msr.h | 2 ++
xen/arch/x86/msr.c
, but not so for sufficiently large x2APIC IDs.
This patch scans each APIC ID before constructing the MADT, and uses the
x2APIC entry for each vCPU whose APIC ID exceeds the size limit imposed
by regular APIC entries.
Signed-off-by: Matthew Barnes
---
tools/libacpi/acpi2_0.h | 13 +++
tools
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