[PATCH] arm/vgic-v2: Fix undefined behavior in vgic_fetch_itargetsr() The current implementation performs left shift operations that may trigger undefined behavior when the target value is too large.

of 128 by 24 places cannot be represented in type 'int' (XEN) Xen WARN at common/ubsan/ubsan.c:174 Signed-off-by: Jahan Murudi --- xen/arch/arm/vgic-v2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/vgic-v2.c b/xen/arch/arm/vgic-v2.c index a19d610178..

[PATCH v2] arm/vgic-v2: Fix undefined behavior in vgic_fetch_itargetsr()

while fixing the UBSAN warning The issue was detected by UBSAN: (XEN) UBSAN: Undefined behaviour in arch/arm/vgic-v2.c:73:56 (XEN) left shift of 128 by 24 places cannot be represented in type 'int' (XEN) Xen WARN at common/ubsan/ubsan.c:174 Signed-off-by: Jahan Murudi --- Change

RE: [PATCH v2] arm/vgic-v2: Fix undefined behavior in vgic_fetch_itargetsr()

Hi Stefano/Julien, This v2 patch was reviewed-by Michal Orzel on 2nd June. Could it be merged? Link : https://patchwork.kernel.org/project/xen-devel/patch/20250601163212.2988162-1-jahan.murudi...@renesas.com/ Thanks, Jahan Murudi -Original Message- From: Orzel, Michal Sent: 02

[PATCH] xen/arm: Enhance IPMMU-VMSA driver robustness and debug output

peration ordering, code readability, and runtime traceability for IPMMU on R-Car Gen3/Gen4 SoCs Signed-off-by: Jahan Murudi --- xen/drivers/passthrough/arm/ipmmu-vmsa.c | 6 +- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/drivers/passthrough/arm/ipmmu-vmsa.c b/xen/driver

RE: [PATCH] xen/arm: Enhance IPMMU-VMSA driver robustness and debug output

e 2025 12:56 To: Jahan Murudi ; xen-devel@lists.xenproject.org Cc: Stefano Stabellini ; Julien Grall ; Bertrand Marquis ; Volodymyr Babchuk Subject: Re: [PATCH] xen/arm: Enhance IPMMU-VMSA driver robustness and debug output On 20/06/2025 12:31, Jahan Murudi wrote: > - Fix typo in source c

[PATCH xen/arm 1/1] xen/arm: Standardize R-Car platform Kconfig descriptions

Changed "RCar3/RCar4" to "R-Car Gen3/Gen4" to match official Renesas branding Aligns with documentation and industry-standard terminology Signed-off-by: Jahan Murudi --- xen/arch/arm/platforms/Kconfig | 10 ++ 1 file changed, 6 insertions(+), 4 deletions(-) diff

[PATCH v2] xen/arm: Standardize R-Car platform Kconfig descriptions

Change "RCar3/RCar4" to "R-Car Gen3/Gen4" to match official Renesas branding. Aligns with documentation and industry-standard terminology. Signed-off-by: Jahan Murudi --- xen/arch/arm/platforms/Kconfig | 10 ++ 1 file changed, 6 insertions(+), 4 deletions(-) diff

RE: [PATCH] xen/arm: Enhance IPMMU-VMSA driver robustness and debug output

g flushes applies globally. This is true for both stage-1 and stage-2. Given that the patch has already been Acked by Michal, can we proceed with applying it? Regards, Jahan Murudi

RE: [PATCH] tools/xentop: Add physical CPU statistics support

redundant. In v2 of the RFC patch, I've removed both the explicit pcpu.o rule and the pattern rule. https://patchwork.kernel.org/project/xen-devel/patch/20250709082810.3052544-1-jahan.murudi...@renesas.com/ Regards, Jahan Murudi

[RFC PATCH v2] tools/xentop: Add physical CPU statistics support

6.3 8 DomD -r 767.038.1 8 Physical CPU Usage: ┌───┬┐ │ Core │ Usage │ ├───┼┤ │ 0 │ 98.1% │ │ ... │ ... │ │ 7 │ 97.3% │ └───┴────┘ Signed-off-by: Jahan Murudi --- tools/xentop/Makefile | 5 +

[PATCH] tools/xentop: Add physical CPU statistics support

% │ │ ... │ ... │ │ 7 │ 97.3% │ └───┴────┘ Signed-off-by: Jahan Murudi --- tools/xentop/Makefile | 11 +++- tools/xentop/pcpu.c | 116 ++ tools/xentop/pcpu.h | 18 +++ tools/xentop/xentop.c | 30 +-- 4 files changed,

RE: [PATCH] tools/xentop: Add physical CPU statistics support

Hi Andriy, Thank you for your review. >On 08/07/ 2025 18:26, Andriy Sultanov wrote: > > diff --git a/tools/xentop/xentop.c b/tools/xentop/xentop.c > index > > f5d6c19cf9..477299c883 100644 > --- a/tools/xentop/xentop.c > +++ > > b/tools/xentop/xentop.c > @@ -69,6 +70,12 @@ > >  #define

RE: [PATCH] xen/arm: Enhance IPMMU-VMSA driver robustness and debug output

ng. > Anyway, I am not against using "dsb(sy)". It is stronger than necessary but > also probably not a massive deal in the TLB flush path. Thank you. I agree the performance impact is negligible in the flush path, and it's better to be safe when dealing with passthrough devices in xen. Regards, Jahan Murudi

RE: [RFC PATCH v2] tools/xentop: Add physical CPU statistics support

Hi Anthony, Just following up on the patch I sent earlier that adds -p/--pcpus support to xentop. Would you mind reviewing (and merging if everything looks good)? Please let me know if any changes are needed. Thank you for your time. Regards, Jahan Murudi

[RFC PATCH v3] tools/xentop: Add physical CPU statistics support

│ ├───┼┤ │ 0 │ 98.1% │ │ ... │ ... │ │ 7 │ 97.3% │ └───┴────┘ Signed-off-by: Jahan Murudi --- tools/xentop/Makefile | 5 +- tools/xentop/pcpu.c | 152 ++ tools/xentop/pcpu.h | 15 + tools/xentop/xentop.c |