Skip the following Xen specific host device tree nodes/properties
from being included into hardware domain /chosen node:
- xen,static-heap: this property informs Xen about memory regions
reserved exclusively as static heap,
- xen,domain-shared-memory-v1: node with this compatible informs Xen
about static shared memory region for a domain. Xen exposes a different
node (under /reserved-memory with compatible "xen,shared-memory-v1") to
let domain know about the shared region,
- xen,evtchn-v1: node with this compatible informs Xen about static
event channel configuration for a domain. Xen does not expose
information about static event channels to domUs and dom0 case was
overlooked (by default nodes from host dt are copied to dom0 fdt unless
explicitly marked to be skipped), since the author's idea was not to
expose it (refer docs/misc/arm/device-tree/booting.txt, "Static Event
Channel"). Even if we wanted to expose the static event channel
information, the current node is in the wrong format (i.e. contains
phandle to domU node not visible by dom0). Lastly, this feature is
marked as tech-preview and there is no Linux dt binding in place.
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Release-acked-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Julien Grall <jgrall@amazon.com>
As per the last MISRA C group discussion, let's accept 11.7 (for which
we have no violations) and 11.8.
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Implement atomic.h for PPC, based off of the original Xen 3.2
implementation. This implementation depends on some functions that are
not yet defined (notably __cmpxchg), so it can't yet be used.
Signed-off-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
headline states:
"A 'u' or 'U' suffix shall be applied to all integer constants
that are represented in an unsigned type".
Addi the 'U' suffix to integers literals with unsigned type.
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
headline states:
"A 'u' or 'U' suffix shall be applied to all integer constants
that are represented in an unsigned type".
Add the 'U' suffix to integers literals with unsigned type.
For the sake of uniformity, the following change is made:
- add the 'U' suffix to all first macro's arguments
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
headline states:
"A 'u' or 'U' suffix shall be applied to all integer constants
that are represented in an unsigned type".
Add the 'U' suffix to integers literals with unsigned type.
For the sake of uniformity, the following change is made:
- add the 'U' suffix to switch cases in 'cpuid.c'
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Add missing parameter names and make function declarations and
definitions consistent. No functional change.
Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Use pdev->sbdf instead of the PCI_SBDF macro in calls to pci_* functions
where appropriate. Move NULL check earlier.
Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@amd.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Convert pci_find_*cap* functions and call sites to pci_sbdf_t, and remove some
now unused local variables. Also change to more appropriate types on lines that
are already being modified as a result of the pci_sbdf_t conversion.
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@amd.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
The xen sources contain violations of MISRA C:2012 Rule 7.3 whose headline
states:
"The lowercase character 'l' shall not be used in a literal suffix".
Use the "L" suffix instead of the "l" suffix, to avoid potential ambiguity.
If the "u" suffix is used near "L", use the "U" suffix instead, for consistency.
The changes in this patch are mechanical.
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Paul Durrant <paul@xen.org>
The xen sources contain violations of MISRA C:2012 Rule 7.3 whose headline
states:
"The lowercase character 'l' shall not be used in a literal suffix".
Use the "L" suffix instead of the "l" suffix, to avoid potential ambiguity.
If the "u" suffix is used near "L", use the "U" suffix instead, for consistency.
The changes in this patch are mechanical.
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Paul Durrant <paul@xen.org>
When creating dom0 with grant table support disabled in Xen and no IOMMU,
the following assert is triggered (debug build):
"Assertion 's <= e' failed at common/rangeset.c:189"
(XEN) Xen call trace:
(XEN) [<0000020000218568>] rangeset_remove_range+0xbc/0x2cc (PC)
(XEN) [<00000200002c76bc>] domain_build.c#make_hypervisor_node+0x294/0x7c4 (LR)
(XEN) [<00000200002ca240>] domain_build.c#handle_node+0x7ec/0x924
(XEN) [<00000200002ca7ac>] domain_build.c#construct_dom0+0x434/0x4d8
This is because find_unallocated_memory() (used to find memory holes
for extended regions) calls rangeset_remove_range() for an empty
grant table region. Fix it by checking if the size of region is not 0.
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
The xen sources contains violations of MISRA C:2012 Rule 7.2 whose
headline states:
"A 'u' or 'U' suffix shall be applied to all integer constants
that are represented in an unsigned type".
Add the 'U' suffix to integers literals with unsigned type and also to other
literals used in the same contexts or near violations, when their positive
nature is immediately clear. The latter changes are done for the sake of
uniformity.
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
The fix for this issue was backported to 11.3, so let's not unduly
engage the workaround.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Julien Grall <jgrall@amazon.com>
The xen sources contain violations of MISRA C:2012 Rule 7.3 whose headline
states:
"The lowercase character 'l' shall not be used in a literal suffix".
Use the "L" suffix instead of the "l" suffix, to avoid potential ambiguity.
If the "u" suffix is used near "L", use the "U" suffix instead, for consistency.
The changes in this patch are mechanical.
Signed-off-by: Gianluca Luparini <gianluca.luparini@bugseng.com>
Signed-off-by: Simone Ballarin <simone.ballarin@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
RTM debugging and BusLock Detect have both introduced conditional behaviour
into the %dr6/7 calculations which Xen's existing logic doesn't account for.
Introduce the CPUID bit for BusLock Detect, so we can get the %dr6 behaviour
correct from the outset.
Implement x86_adj_dr{6,7}_rsvd() fully, and use them in place of the plain
bitmasks.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Jinoh Kang <jinoh.kang.kr@gmail.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Broken out of the subsequent patch for clarity.
Add stub x86_adj_dr{6,7}_rsvd() functions which will be extended in the
following patch to fix bugs, and adjust debugreg.h to compile with a more
minimal set of includes.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Right now, bad PV state is silently dropped and zeroed, while bad HVM state is
passed directly to hardware and can trigger VMEntry/VMRUN failures. e.g.
(XEN) d12v0 vmentry failure (reason 0x80000021): Invalid guest state (0)
...
(XEN) RFLAGS=0x00000002 (0x00000002) DR7 = 0x4000000000000001
Furthermore, prior to c/s 30f43f4aa8 ("x86: Reorganise and rename debug
register fields in struct vcpu") in Xen 4.11 where v->arch.dr6 was reduced in
width, the toolstack can cause a host crash by loading a bad %dr6 value on
VT-x hardware.
Reject any %dr6/7 values with upper bits set. For PV guests, also audit
%dr0..3 using the same logic as in set_debugreg() so they aren't silently
zeroed later in the function. Leave a comment behind explaing how %dr4/5
handling changed, and why they're ignored now.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Add missing parameter names and make function declarations and
definitions consistent. No functional change.
Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
The first of the commits referenced below didn't go far enough, and the
2nd of them, while trying to close (some of) the gap, wrongly kept using
the potentially type-safe variant. This is getting in the way of new
ports preferably not having any type-unsafe private code (and in
particular not having a need for any overrides in newly introduced
files).
Fixes: 41c48004d1 ("xen/mm: Use __virt_to_mfn in map_domain_page instead of virt_to_mfn")
Fixes: f46b619734 ("xen: Convert page_to_mfn and mfn_to_page to use typesafe MFN")
Reported-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Shamelessly copy changes to gcov_info structures from linux so that we
can capture coverage for xen built with newer compilers.
Signed-off-by: Javi Merino <javi.merino@cloud.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
The current structure of choosing the correct file based on the
compiler version makes us make 33 line files just to define a
constant. The changes after gcc 4.7 are minimal, just the number of
counters.
Fold the changes in gcc_4_9.c, gcc_5.c and gcc_7.c into gcc_4_7.c to
remove a lot of the boilerplate and keep the logic of choosing the
GCOV_COUNTER in gcc_4_7.c.
Signed-off-by: Javi Merino <javi.merino@cloud.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Make function declarations consistent with the corresponding
definitions to address violations of MISRA C:2012 Rule 8.3.
No functional change.
Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
asm/vm_event.h is common for ARM and RISC-V so it will be moved to
asm-generic dir.
Original asm/vm_event.h from ARM was updated:
* use SPDX-License-Identifier.
* update comment messages of stubs.
* update #ifdef
* instead of "include <public/domctl.h>" -> "public/vm_event.h"
As vm_event.h was moved to asm-generic then it is needed to create
Makefile in arm/include/asm/ and add generated-y += vm_event.h to
it.
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Acked-by: Tamas K Lengyel <tamas@tklengyel.com>
Some headers are shared between individual architectures or are empty.
To avoid duplication of these headers, asm-generic is introduced.
With the following patch, an architecture uses generic headers
mentioned in the file arch/$(ARCH)/include/asm/Makefile
To use a generic header is needed to add to
arch/$(ARCH)/include/asm/Makefile :
generic-y += <name-of-header-file.h>
For each mentioned header in arch/$(ARCH)/include/asm/Makefile,
the necessary wrapper in arch/$(ARCH)/include/generated/asm will be
generated.
As the base Makefile.asm-generic from Linux kernel was taken.
( 06c2afb862f9da8 "Linux 6.5-rc1" ).
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Replace Arm- and x86-specific lines with wildcard ones, thus covering
all architectures. Uniformly permit an extra sub-directory level to be
used, as is already the case for xen/include/.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Tamas K Lengyel <tamas@tklengyel.com>
The original assembly setup_fixmap() is actually doing two seperate
tasks, one is enabling the early UART when earlyprintk on, and the
other is to set up the fixmap (even when earlyprintk is off).
Per discussion in [1], since commit
9d267c049d ("xen/arm64: Rework the memory layout"), there is no
chance that the fixmap and the mapping of early UART will clash with
the 1:1 mapping. Therefore the mapping of both the fixmap and the
early UART can be moved to the end of create_pagetables().
[1] https://lore.kernel.org/xen-devel/78862bb8-fd7f-5a51-a7ae-3c5b5998ed80@xen.org/
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Xen defines some global configuration macros for Arm in config.h.
However there are some address layout related definitions that are
defined for MMU systems only, and these definitions could not be
used by MPU systems. Adding ifdefs to differentiate the MPU from MMU
layout will result in a messy and hard-to-read/maintain code.
So move all memory layout definitions to a new file, i.e. mmu/layout.h
to avoid spreading "#ifdef" everywhere.
Signed-off-by: Wei Chen <wei.chen@arm.com>
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
The MMU specific code in head.S will not be used on MPU systems.
Instead of introducing more #ifdefs which will bring complexity
to the code, move MMU related code to mmu/head.S and keep common
code in head.S. Two notes while moving:
- As "fail" in original head.S is very simple and this name is too
easy to be conflicted, duplicate it in mmu/head.S instead of
exporting it.
- Use ENTRY() for enable_secondary_cpu_mm, enable_boot_cpu_mm and
setup_fixmap as they will be used externally.
Also move the assembly macros shared by head.S and mmu/head.S to
macros.h.
Note that, only the first 4KB of Xen image will be mapped as
identity (PA == VA). At the moment, Xen guarantees this by having
everything that needs to be used in the identity mapping in
.text.header section of head.S, and the size will be checked by
_idmap_start and _idmap_end at link time if this fits in 4KB.
Since we are introducing a new head.S in this patch, although
we can add .text.header to the new file to guarantee all identity
map code still in the first 4KB. However, the order of these two
files on this 4KB depends on the build toolchains. Hence, introduce
a new section named .text.idmap in the region between _idmap_start
and _idmap_end. And in Xen linker script, we force the .text.idmap
contents to linked after .text.header. This will ensure code of
head.S always be at the top of Xen binary.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Signed-off-by: Wei Chen <wei.chen@arm.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
There are two types of memory system architectures available for
Arm-based systems, namely the Virtual Memory System Architecture (VMSA)
and the Protected Memory System Architecture (PMSA). According to
ARM DDI 0487G.a, A VMSA provides a Memory Management Unit (MMU) that
controls address translation, access permissions, and memory attribute
determination and checking, for memory accesses made by the PE. And
refer to ARM DDI 0600A.c, the PMSA supports a unified memory protection
scheme where an Memory Protection Unit (MPU) manages instruction and
data access. Currently, Xen only supports VMSA.
Introduce a Kconfig option CONFIG_MMU, which is currently default
set to y and unselectable because currently only VMSA is supported.
CONFIG_MMU will be used in follow-up patches.
Suggested-by: Julien Grall <jgrall@amazon.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Acked-by: Julien Grall <jgrall@amazon.com>
At the moment, on MMU system, enable_mmu() will return to an
address in the 1:1 mapping, then each path is responsible to
switch to virtual runtime mapping. Then remove_identity_mapping()
is called on the boot CPU to remove all 1:1 mapping.
Since remove_identity_mapping() is not necessary on Non-MMU system,
and we also avoid creating empty function for Non-MMU system, trying
to keep only one codeflow in arm64/head.S, we move path switch and
remove_identity_mapping() in enable_mmu() on MMU system.
As the remove_identity_mapping should only be called for the boot
CPU only, so we introduce enable_boot_cpu_mm() for boot CPU and
enable_secondary_cpu_mm() for secondary CPUs in this patch.
Signed-off-by: Wei Chen <wei.chen@arm.com>
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Reviewed-by: Ayan Kumar Halder <ayankuma@amd.com>
The functions referenced by this patch should have had a compatible
declaration visible prior to their definition. This is achieved by
including the arch-specific header in 'xen/arch/arm/ioreq.c'
Fixes: cb9953d2f2 ("arm/ioreq: Introduce arch specific bits for IOREQ/DM features")
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Since QEMU's PowerNV support has matured to the point where it is
now suitable for development, drop support for booting on the
paravirtualized pseries machine type and its associated interfaces.
Support for booting on pseries was broken by 74b725a64d ('xen/ppc:
Implement initial Radix MMU support'), and since there is little
practical value in continuing to support pseries as a target, just drop
support for it entirely.
Fixes: 74b725a64d ('xen/ppc: Implement initial Radix MMU support')
Signed-off-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Run ppc64le tests with the PowerNV machine type (bare metal) instead of
the paravirtualized pseries machine. This requires a more modern version
of QEMU than is present in debian bullseye's repository, so update the
dockerfile to build QEMU from source.
Support for booting on pseries was broken by 74b725a64d ('xen/ppc:
Implement initial Radix MMU support') which resulted in CI failures. In
preparation for removing pseries support entirely, switch the CI
infrastructure to the PowerNV machine type.
Signed-off-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Some awk binary is used in many places during build,
make sure it is part of the image.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Add missing parameter names and make function declarations and
definitions consistent.
No functional change.
Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Make function delcaration consistent with the corresponding definition.
No functional change.
Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
This allows local MISRA deviation comments to be translated into
the format recognized by ECLAIR.
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
As stated in 'docs/misra/rules.rst' the functions that are used only by
asm modules do not need to conform to MISRA C:2012 Rule 8.4.
The deviations are carried out with a SAF comment.
Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
For using a GNU extension, it may not be exposed in general, just like
is done on x86 (except that here we need to also work around not all of
the tool stack actually defining __XEN_TOOLS__). External consumers (not
using gcc or a compatible compiler) need to make this type available up
front (just like we expect {,u}int<N>_t to be supplied) - unlike on x86
the type is actually needed outside of tools-only interfaces, because
guest handle definitions use it.
While there also add underscores around "aligned".
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
When building Xen for arm32 with CONFIG_DTB_OVERLAY, the following
error is printed:
common/dt-overlay.c: In function ‘iomem_remove_cb’:
././include/xen/config.h:55:24: error: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘long unsigned int’ [-Werror=format=]
Function parameters s and e (denoting MMIO region) are of type unsigned
long and indicate frame numbers and not addresses. This also means that
the arguments passed to printk() are incorrect (using PAGE_ALIGN() or
PAGE_MASK ANDed with a frame number results in unwanted output). Fix it.
Take the opportunity to switch to %pd specifier to print domain id in
a consolidated way.
Fixes: 7e5c4a8b86 ("xen/arm: Implement device tree node removal functionalities")
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Vikram Garhwal <vikram.garhwal@amd.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
FFA_RXTX_MAP is currently limited to mapping only one 4k page for each
RX and TX buffer. If a guest tries to map more than one page, an error
is returned. Until this patch, we have been using FFA_RET_NOT_SUPPORTED.
However, that error code is reserved in the FF-A specification to report
that the function is not implemented. Of all the other defined error
codes, the least bad is FFA_RET_INVALID_PARAMETERS, so use that instead.
Fixes: 38d81e7ccb ("xen/arm: ffa: support mapping guest RX/TX buffers")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
main_dt_overlay() makes a call to libxl_dt_overlay() which is for now
only compiled for Arm. This causes the build failure as reported by
gitlab CI and OSSTEST. Fix it by guarding the function, prototype and
entry in cmd_table[] using LIBXL_HAVE_DT_OVERLAY. This has an advantage
over regular Arm guard so that the code will not need to be modified again
if other architecture gain support for this feature.
Fixes: 61765a07e3 ("tools/xl: Add new xl command overlay for device tree overlay support")
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
When running with SMMUv3 and UBSAN enabled on arm64, there are a lot of
warnings printed related to shifting into sign bit in generic_fls()
as it takes parameter of type int.
Example:
(XEN) UBSAN: Undefined behaviour in ./include/xen/bitops.h:69:11
(XEN) left shift of 134217728 by 4 places cannot be represented in type 'int'
It does not make a lot of sense to ask for the last set bit of a negative
value. We don't have a direct user of this helper and all the wrappers
pass value of type unsigned {int,long}.
Linux did the same as part of commit:
3fc2579e6f16 ("fls: change parameter to unsigned int")
To keep consistency between the helpers, take the opportunity to:
- replace __inline__ with inline,
- modify generic_ffs() to take parameter of type unsigned int as well
(currently no user and the only wrapper generic_ffsl() passes unsigned
long).
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Henry Wang <Henry.Wang@arm.com>
When running with SMMUv3 and UBSAN enabled, the following is printed:
(XEN) UBSAN: Undefined behaviour in drivers/passthrough/arm/smmu-v3.c:297:12
(XEN) left shift of 1 by 31 places cannot be represented in type 'int'
This refers to shift in Q_OVERFLOW_FLAG that is missing 'U' suffix.
While there, also fix the same in GBPA_UPDATE.
This should address MISRA Rule 7.2:
A "u" or "U" suffix shall be applied to all integer constants that
are represented in an unsigned type
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
Michal Orzel