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There are quite a few things used in the sdw.h header that it relies on
the consumer to include. If something is used directly in the header it
should be included by the header. Update the includes to cover the
missing items, or add forward declarations for things that are only used
as pointers. Whilst making the change also alphabetise the list of
includes.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20241112125646.590240-1-ckeepax@opensource.cirrus.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Follow recommended programming flows.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003094830.119673-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Follow the recommended programming flows.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003094830.119673-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add a kernel parameter to work-around discrepancies between hardware
and platform firmware, it's not unusual to see e.g. 38.4MHz listed in
_DSD properties as the SoundWire clock source, but the hardware may be
based on a 19.2 MHz mclk source.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241004021850.9758-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The SoundWire specification did not clearly require that ports could
use all Lanes. Some SoundWire/SDCA peripheral adopters added
restrictions on which lanes can be used by what port, and the DisCo
for SoundWire 2.1 specification added a 'lane-list' property to model
this hardware limitation.
When not specified, the ports can use all Lanes. Otherwise, the
'lane-list' indicates which Lanes can be used, sorted by order of
preference (most-preferred-first).
This patch only reads the properties, the use of this property will
come at a later time with multi-lane support.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-15-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The DisCo for SoundWire 2.0 spec adds support for new
'mipi-sdw-sdca-interrupt-register-list' and
'mipi-sdw-commit-register-supported'.
This patch only adds the definitions and property reads, but the use
of these properties will come at some point in the future when needed.
Note a slight conceptual disconnect between the MIPI DisCo definition
of a boolean property and the Linux implementation. The latter only
checks the presence of the property to set its value to 'true',
whereas the MIPI definitions allow for a property with a 'false'
value. This patch uses the new introduced mipi_device_property_read_bool()
to handle it.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-14-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The DisCo for SoundWire 2.0 spec adds support for a new property, but
it's not very helpful. Add a comment to explain that it's
intentionally ignored.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-13-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The DisCo for SoundWire 2.0 spec renamed the
'mipi-sdw-slave-channelprepare-timeout', add support for the new
definition in backwards-compatible ways.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-12-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The DisCo for SoundWire 2.0 spec adds support for the
'mipi-sdw-supported-clock-scales' property, which is just a
rename. Add in a backwards-compatible manner.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-11-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The existing code assumes that there are no possible errors when using
fwnode_property_read_u32_array(), because fwnode_property_count_u32()
reads this array to determine its number of elements. We need to also
protect the second read to be completely bullet-proof.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-10-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The concept of DPn audio-modes was never used by anyone, and was
removed from the DisCo for SoundWire 2.0 specification.
Remove the definitions and TODO.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-9-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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before:
struct sdw_dpn_prop {
u32 num; /* 0 4 */
u32 max_word; /* 4 4 */
u32 min_word; /* 8 4 */
u32 num_words; /* 12 4 */
u32 * words; /* 16 8 */
enum sdw_dpn_type type; /* 24 4 */
u32 max_grouping; /* 28 4 */
bool simple_ch_prep_sm; /* 32 1 */
/* XXX 3 bytes hole, try to pack */
u32 ch_prep_timeout; /* 36 4 */
u32 imp_def_interrupts; /* 40 4 */
u32 max_ch; /* 44 4 */
u32 min_ch; /* 48 4 */
u32 num_channels; /* 52 4 */
u32 * channels; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
u32 num_ch_combinations; /* 64 4 */
/* XXX 4 bytes hole, try to pack */
u32 * ch_combinations; /* 72 8 */
u32 modes; /* 80 4 */
u32 max_async_buffer; /* 84 4 */
bool block_pack_mode; /* 88 1 */
bool read_only_wordlength; /* 89 1 */
/* XXX 2 bytes hole, try to pack */
u32 port_encoding; /* 92 4 */
struct sdw_dpn_audio_mode * audio_modes; /* 96 8 */
/* size: 104, cachelines: 2, members: 22 */
/* sum members: 95, holes: 3, sum holes: 9 */
/* last cacheline: 40 bytes */
};
after:
struct sdw_dpn_prop {
struct sdw_dpn_audio_mode * audio_modes; /* 0 8 */
u32 num; /* 8 4 */
u32 max_word; /* 12 4 */
u32 min_word; /* 16 4 */
u32 num_words; /* 20 4 */
u32 * words; /* 24 8 */
enum sdw_dpn_type type; /* 32 4 */
u32 max_grouping; /* 36 4 */
u32 ch_prep_timeout; /* 40 4 */
u32 imp_def_interrupts; /* 44 4 */
u32 max_ch; /* 48 4 */
u32 min_ch; /* 52 4 */
u32 num_channels; /* 56 4 */
u32 num_ch_combinations; /* 60 4 */
/* --- cacheline 1 boundary (64 bytes) --- */
u32 * channels; /* 64 8 */
u32 * ch_combinations; /* 72 8 */
u32 modes; /* 80 4 */
u32 max_async_buffer; /* 84 4 */
u32 port_encoding; /* 88 4 */
bool block_pack_mode; /* 92 1 */
bool read_only_wordlength; /* 93 1 */
bool simple_ch_prep_sm; /* 94 1 */
/* size: 96, cachelines: 2, members: 22 */
/* padding: 1 */
/* last cacheline: 32 bytes */
};
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-8-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Move pointers and booleans.
Before:
struct sdw_dp0_prop {
u32 max_word; /* 0 4 */
u32 min_word; /* 4 4 */
u32 num_words; /* 8 4 */
/* XXX 4 bytes hole, try to pack */
u32 * words; /* 16 8 */
bool BRA_flow_controlled; /* 24 1 */
bool simple_ch_prep_sm; /* 25 1 */
/* XXX 2 bytes hole, try to pack */
u32 ch_prep_timeout; /* 28 4 */
bool imp_def_interrupts; /* 32 1 */
/* size: 40, cachelines: 1, members: 8 */
/* sum members: 27, holes: 2, sum holes: 6 */
/* padding: 7 */
/* last cacheline: 40 bytes */
};
after:
struct sdw_dp0_prop {
u32 * words; /* 0 8 */
u32 max_word; /* 8 4 */
u32 min_word; /* 12 4 */
u32 num_words; /* 16 4 */
u32 ch_prep_timeout; /* 20 4 */
bool BRA_flow_controlled; /* 24 1 */
bool simple_ch_prep_sm; /* 25 1 */
bool imp_def_interrupts; /* 26 1 */
/* size: 32, cachelines: 1, members: 8 */
/* padding: 5 */
/* last cacheline: 32 bytes */
};
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-7-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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move pointers first, and move booleans together.
before:
struct sdw_slave_prop {
u32 mipi_revision; /* 0 4 */
bool wake_capable; /* 4 1 */
bool test_mode_capable; /* 5 1 */
bool clk_stop_mode1; /* 6 1 */
bool simple_clk_stop_capable; /* 7 1 */
u32 clk_stop_timeout; /* 8 4 */
u32 ch_prep_timeout; /* 12 4 */
enum sdw_clk_stop_reset_behave reset_behave; /* 16 4 */
bool high_PHY_capable; /* 20 1 */
bool paging_support; /* 21 1 */
bool bank_delay_support; /* 22 1 */
/* XXX 1 byte hole, try to pack */
enum sdw_p15_behave p15_behave; /* 24 4 */
bool lane_control_support; /* 28 1 */
/* XXX 3 bytes hole, try to pack */
u32 master_count; /* 32 4 */
u32 source_ports; /* 36 4 */
u32 sink_ports; /* 40 4 */
/* XXX 4 bytes hole, try to pack */
struct sdw_dp0_prop * dp0_prop; /* 48 8 */
struct sdw_dpn_prop * src_dpn_prop; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct sdw_dpn_prop * sink_dpn_prop; /* 64 8 */
u8 scp_int1_mask; /* 72 1 */
/* XXX 3 bytes hole, try to pack */
u32 quirks; /* 76 4 */
bool clock_reg_supported; /* 80 1 */
bool use_domain_irq; /* 81 1 */
/* size: 88, cachelines: 2, members: 23 */
/* sum members: 71, holes: 4, sum holes: 11 */
/* padding: 6 */
/* last cacheline: 24 bytes */
};
after:
truct sdw_slave_prop {
struct sdw_dp0_prop * dp0_prop; /* 0 8 */
struct sdw_dpn_prop * src_dpn_prop; /* 8 8 */
struct sdw_dpn_prop * sink_dpn_prop; /* 16 8 */
u32 mipi_revision; /* 24 4 */
bool wake_capable; /* 28 1 */
bool test_mode_capable; /* 29 1 */
bool clk_stop_mode1; /* 30 1 */
bool simple_clk_stop_capable; /* 31 1 */
u32 clk_stop_timeout; /* 32 4 */
u32 ch_prep_timeout; /* 36 4 */
enum sdw_clk_stop_reset_behave reset_behave; /* 40 4 */
bool high_PHY_capable; /* 44 1 */
bool paging_support; /* 45 1 */
bool bank_delay_support; /* 46 1 */
bool lane_control_support; /* 47 1 */
enum sdw_p15_behave p15_behave; /* 48 4 */
u32 master_count; /* 52 4 */
u32 source_ports; /* 56 4 */
u32 sink_ports; /* 60 4 */
/* --- cacheline 1 boundary (64 bytes) --- */
u32 quirks; /* 64 4 */
u8 scp_int1_mask; /* 68 1 */
bool clock_reg_supported; /* 69 1 */
bool use_domain_irq; /* 70 1 */
/* size: 72, cachelines: 2, members: 23 */
/* padding: 1 */
/* last cacheline: 8 bytes */
};
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-6-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The sdw_bus structure has seen multiple additions over the years. It's
one of the most used structures in this subsystem, so there's merit in
reshuffling the members a bit with 'pahole' to reduce holes and
structures across cache lines.
before:
struct sdw_bus {
struct device * dev; /* 0 8 */
struct sdw_master_device * md; /* 8 8 */
int controller_id; /* 16 4 */
unsigned int link_id; /* 20 4 */
int id; /* 24 4 */
/* XXX 4 bytes hole, try to pack */
struct list_head slaves; /* 32 16 */
long unsigned int assigned[1]; /* 48 8 */
struct mutex bus_lock; /* 56 160 */
/* --- cacheline 3 boundary (192 bytes) was 24 bytes ago --- */
struct lock_class_key bus_lock_key; /* 216 16 */
struct mutex msg_lock; /* 232 160 */
/* --- cacheline 6 boundary (384 bytes) was 8 bytes ago --- */
struct lock_class_key msg_lock_key; /* 392 16 */
int (*compute_params)(struct sdw_bus *); /* 408 8 */
const struct sdw_master_ops * ops; /* 416 8 */
const struct sdw_master_port_ops * port_ops; /* 424 8 */
struct sdw_bus_params params; /* 432 36 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 7 boundary (448 bytes) was 24 bytes ago --- */
struct sdw_master_prop prop; /* 472 72 */
/* XXX last struct has 6 bytes of padding */
/* --- cacheline 8 boundary (512 bytes) was 32 bytes ago --- */
void * vendor_specific_prop; /* 544 8 */
struct list_head m_rt_list; /* 552 16 */
struct dentry * debugfs; /* 568 8 */
/* --- cacheline 9 boundary (576 bytes) --- */
struct irq_chip irq_chip; /* 576 264 */
/* --- cacheline 13 boundary (832 bytes) was 8 bytes ago --- */
struct irq_domain * domain; /* 840 8 */
struct sdw_defer defer_msg; /* 848 112 */
/* --- cacheline 15 boundary (960 bytes) --- */
unsigned int clk_stop_timeout; /* 960 4 */
u32 bank_switch_timeout; /* 964 4 */
bool multi_link; /* 968 1 */
/* XXX 3 bytes hole, try to pack */
int hw_sync_min_links; /* 972 4 */
int stream_refcount; /* 976 4 */
/* size: 984, cachelines: 16, members: 27 */
/* sum members: 969, holes: 3, sum holes: 11 */
/* padding: 4 */
/* paddings: 1, sum paddings: 6 */
/* last cacheline: 24 bytes */
};
after:
struct sdw_bus {
struct device * dev; /* 0 8 */
struct sdw_master_device * md; /* 8 8 */
struct lock_class_key bus_lock_key; /* 16 16 */
struct mutex bus_lock; /* 32 160 */
/* --- cacheline 3 boundary (192 bytes) --- */
struct list_head slaves; /* 192 16 */
struct lock_class_key msg_lock_key; /* 208 16 */
struct mutex msg_lock; /* 224 160 */
/* --- cacheline 6 boundary (384 bytes) --- */
struct list_head m_rt_list; /* 384 16 */
struct sdw_defer defer_msg; /* 400 112 */
/* --- cacheline 8 boundary (512 bytes) --- */
struct sdw_bus_params params; /* 512 36 */
int stream_refcount; /* 548 4 */
const struct sdw_master_ops * ops; /* 552 8 */
const struct sdw_master_port_ops * port_ops; /* 560 8 */
struct sdw_master_prop prop; /* 568 72 */
/* XXX last struct has 6 bytes of padding */
/* --- cacheline 10 boundary (640 bytes) --- */
void * vendor_specific_prop; /* 640 8 */
int hw_sync_min_links; /* 648 4 */
int controller_id; /* 652 4 */
unsigned int link_id; /* 656 4 */
int id; /* 660 4 */
int (*compute_params)(struct sdw_bus *); /* 664 8 */
long unsigned int assigned[1]; /* 672 8 */
unsigned int clk_stop_timeout; /* 680 4 */
u32 bank_switch_timeout; /* 684 4 */
struct irq_chip irq_chip; /* 688 264 */
/* --- cacheline 14 boundary (896 bytes) was 56 bytes ago --- */
struct irq_domain * domain; /* 952 8 */
/* --- cacheline 15 boundary (960 bytes) --- */
struct dentry * debugfs; /* 960 8 */
bool multi_link; /* 968 1 */
/* size: 976, cachelines: 16, members: 27 */
/* padding: 7 */
/* paddings: 1, sum paddings: 6 */
/* last cacheline: 16 bytes */
};
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Make pahole happy by moving pointers and u64 first instead of
interleaving them.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-4-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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pahole suggestion: swap position of 'm_rt_count'
before: pahole -C sdw_stream_runtime drivers/soundwire/soundwire-bus.ko
struct sdw_stream_runtime {
const char * name; /* 0 8 */
struct sdw_stream_params params; /* 8 12 */
enum sdw_stream_state state; /* 20 4 */
enum sdw_stream_type type; /* 24 4 */
/* XXX 4 bytes hole, try to pack */
struct list_head master_list; /* 32 16 */
int m_rt_count; /* 48 4 */
/* size: 56, cachelines: 1, members: 6 */
/* sum members: 48, holes: 1, sum holes: 4 */
/* padding: 4 */
/* last cacheline: 56 bytes */
};
after: pahole --reorganize -C sdw_stream_runtime drivers/soundwire/soundwire-bus.ko
struct sdw_stream_runtime {
const char * name; /* 0 8 */
struct sdw_stream_params params; /* 8 12 */
enum sdw_stream_state state; /* 20 4 */
enum sdw_stream_type type; /* 24 4 */
int m_rt_count; /* 28 4 */
struct list_head master_list; /* 32 16 */
/* size: 48, cachelines: 1, members: 6 */
/* last cacheline: 48 bytes */
}; /* saved 8 bytes! */
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The existing device/fwnode_property_read_bool() helpers only check if
the property is present.
The MIPI DisCo for SoundWire specification allows properties to be
exposed with a value of 'false'. Using the standard helpers to
retrieve the MIPI-defined properties causes all kinds of logical
inversions leading to loss of functionality - such as jack detection
in clock-stop mode broken when the device properties are read in
Realtek codec drivers.
This patch adds new MIPI/SoundWire helpers which first check if the
property is present, and then return the actual value extracted from
platform firmware.
Modifying the default property handling was considered as a possible
solution, but it could lead to other types of logical inversions
breaking 'working' setups. Andy Shevchenko also pointed out that DT
keeps values in the BE32 format, it's probably best to avoid
endianness complications.
The path of least resistance was chosen, with MIPI-specific helpers
which can be tested and with no side effects outside of the SoundWire
subsystem.
Closes: https://github.com/thesofproject/linux/issues/5129
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Fixed some confusing spelling errors that were currently identified,
the details are as follows:
-in the code comments:
drivers/soundwire/bus.c:115: enumuration==> enumeration
drivers/soundwire/qcom.c:1176: wil ==> will
drivers/soundwire/sysfs_slave.c:218: highligh ==> highlight
Signed-off-by: Shen Lichuan <shenlichuan@vivo.com>
Link: https://lore.kernel.org/r/20240925081134.10248-1-shenlichuan@vivo.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add acp_rev as structure member in acp pci driver private data structure
to store acp pci revision id and assign this variable to SoundWire resource
data acp_rev variable.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240924081846.1834612-5-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Pass acp_rev(ACP pci revision id) as soundwire resource data
for SoundWire controller probe function.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240924081846.1834612-4-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Refactor existing code by adding acp pci revision id coditional checks
for ACP 6.3 platform. Rename the macros and structure names with ACP63
tag.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20240924081846.1834612-3-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Pass ACP pci revision id as resource data and store it in amd SoundWire
manager private data structure. This field will be used to differentiate
ACP variants.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20240924081846.1834612-2-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The cpu_emergency_register_virt_callback() function is used
unconditionally by the x86 kvm code, but it is declared (and defined)
conditionally:
#if IS_ENABLED(CONFIG_KVM_INTEL) || IS_ENABLED(CONFIG_KVM_AMD)
void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback);
...
leading to a build error when neither KVM_INTEL nor KVM_AMD support is
enabled:
arch/x86/kvm/x86.c: In function ‘kvm_arch_enable_virtualization’:
arch/x86/kvm/x86.c:12517:9: error: implicit declaration of function ‘cpu_emergency_register_virt_callback’ [-Wimplicit-function-declaration]
12517 | cpu_emergency_register_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/x86.c: In function ‘kvm_arch_disable_virtualization’:
arch/x86/kvm/x86.c:12522:9: error: implicit declaration of function ‘cpu_emergency_unregister_virt_callback’ [-Wimplicit-function-declaration]
12522 | cpu_emergency_unregister_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix the build by defining empty helper functions the same way the old
cpu_emergency_disable_virtualization() function was dealt with for the
same situation.
Maybe we could instead have made the call sites conditional, since the
callers (kvm_arch_{en,dis}able_virtualization()) have an empty weak
fallback. I'll leave that to the kvm people to argue about, this at
least gets the build going for that particular config.
Fixes: 590b09b1d88e ("KVM: x86: Register "emergency disable" callbacks when virt is enabled")
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Kai Huang <kai.huang@intel.com>
Cc: Chao Gao <chao.gao@intel.com>
Cc: Farrah Chen <farrah.chen@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
- fix kconfig dependencies (mhu-v3, omap2+)
- use devie name instead of genereic imx_mu_chan as interrupt name
(imx)
- enable sa8255p and qcs8300 ipc controllers (qcom)
- Fix timeout during suspend mode (bcm2835)
- convert to use use of_property_match_string (mailbox)
- enable mt8188 (mediatek)
- use devm_clk_get_enabled helpers (spreadtrum)
- fix device-id typo (rockchip)
* tag 'mailbox-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox:
mailbox, remoteproc: omap2+: fix compile testing
dt-bindings: mailbox: qcom-ipcc: Document QCS8300 IPCC
dt-bindings: mailbox: qcom-ipcc: document the support for SA8255p
dt-bindings: mailbox: mtk,adsp-mbox: Add compatible for MT8188
mailbox: Use of_property_match_string() instead of open-coding
mailbox: bcm2835: Fix timeout during suspend mode
mailbox: sprd: Use devm_clk_get_enabled() helpers
mailbox: rockchip: fix a typo in module autoloading
mailbox: imx: use device name in interrupt name
mailbox: ARM_MHU_V3 should depend on ARM64
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- fix DesignWare driver ENABLE-ABORT sequence, ensuring ABORT can
always be sent when needed
- check for PCLK in the SynQuacer controller as an optional clock,
allowing ACPI to directly provide the clock rate
- KEBA driver Kconfig dependency fix
- fix XIIC driver power suspend sequence
* tag 'i2c-for-6.12-rc1-additional_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: xiic: Fix pm_runtime_set_suspended() with runtime pm enabled
i2c: keba: I2C_KEBA should depend on KEBA_CP500
i2c: synquacer: Deal with optional PCLK correctly
i2c: designware: fix controller is holding SCL low while ENABLE bit is disabled
|
|
git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
- handle chained SGLs in the new tracing code (Christoph Hellwig)
* tag 'dma-mapping-6.12-2024-09-29' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: fix DMA API tracing for chained scatterlists
|
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Pull more SCSI updates from James Bottomley:
"These are mostly minor updates.
There are two drivers (lpfc and mpi3mr) which missed the initial
pull and a core change to retry a start/stop unit which affect
suspend/resume"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (32 commits)
scsi: lpfc: Update lpfc version to 14.4.0.5
scsi: lpfc: Support loopback tests with VMID enabled
scsi: lpfc: Revise TRACE_EVENT log flag severities from KERN_ERR to KERN_WARNING
scsi: lpfc: Ensure DA_ID handling completion before deleting an NPIV instance
scsi: lpfc: Fix kref imbalance on fabric ndlps from dev_loss_tmo handler
scsi: lpfc: Restrict support for 32 byte CDBs to specific HBAs
scsi: lpfc: Update phba link state conditional before sending CMF_SYNC_WQE
scsi: lpfc: Add ELS_RSP cmd to the list of WQEs to flush in lpfc_els_flush_cmd()
scsi: mpi3mr: Update driver version to 8.12.0.0.50
scsi: mpi3mr: Improve wait logic while controller transitions to READY state
scsi: mpi3mr: Update MPI Headers to revision 34
scsi: mpi3mr: Use firmware-provided timestamp update interval
scsi: mpi3mr: Enhance the Enable Controller retry logic
scsi: sd: Fix off-by-one error in sd_read_block_characteristics()
scsi: pm8001: Do not overwrite PCI queue mapping
scsi: scsi_debug: Remove a useless memset()
scsi: pmcraid: Convert comma to semicolon
scsi: sd: Retry START STOP UNIT commands
scsi: mpi3mr: A performance fix
scsi: ufs: qcom: Update MODE_MAX cfg_bw value
...
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Pull more bcachefs updates from Kent Overstreet:
"Assorted minor syzbot fixes, and for bigger stuff:
Fix two disk accounting rewrite bugs:
- Disk accounting keys use the version field of bkey so that journal
replay can tell which updates have been applied to the btree.
This is set in the transaction commit path, after we've gotten our
journal reservation (and our time ordering), but the
BCH_TRANS_COMMIT_skip_accounting_apply flag that journal replay
uses was incorrectly skipping this for new updates generated prior
to journal replay.
This fixes the underlying cause of an assertion pop in
disk_accounting_read.
- A couple of fixes for disk accounting + device removal.
Checking if acocunting replicas entries were marked in the
superblock was being done at the wrong point, when deltas in the
journal could still zero them out, and then additionally we'd try
to add a missing replicas entry to the superblock without checking
if it referred to an invalid (removed) device.
A whole slew of repair fixes:
- fix infinite loop in propagate_key_to_snapshot_leaves(), this fixes
an infinite loop when repairing a filesystem with many snapshots
- fix incorrect transaction restart handling leading to occasional
"fsck counted ..." warnings
- fix warning in __bch2_fsck_err() for bkey fsck errors
- check_inode() in fsck now correctly checks if the filesystem was
clean
- there shouldn't be pending logged ops if the fs was clean, we now
check for this
- remove_backpointer() doesn't remove a dirent that doesn't actually
point to the inode
- many more fsck errors are AUTOFIX"
* tag 'bcachefs-2024-09-28' of git://evilpiepirate.org/bcachefs: (35 commits)
bcachefs: check_subvol_path() now prints subvol root inode
bcachefs: remove_backpointer() now checks if dirent points to inode
bcachefs: dirent_points_to_inode() now warns on mismatch
bcachefs: Fix lost wake up
bcachefs: Check for logged ops when clean
bcachefs: BCH_FS_clean_recovery
bcachefs: Convert disk accounting BUG_ON() to WARN_ON()
bcachefs: Fix BCH_TRANS_COMMIT_skip_accounting_apply
bcachefs: Check for accounting keys with bversion=0
bcachefs: rename version -> bversion
bcachefs: Don't delete unlinked inodes before logged op resume
bcachefs: Fix BCH_SB_ERRS() so we can reorder
bcachefs: Fix fsck warnings from bkey validation
bcachefs: Move transaction commit path validation to as late as possible
bcachefs: Fix disk accounting attempting to mark invalid replicas entry
bcachefs: Fix unlocked access to c->disk_sb.sb in bch2_replicas_entry_validate()
bcachefs: Fix accounting read + device removal
bcachefs: bch_accounting_mode
bcachefs: fix transaction restart handling in check_extents(), check_dirents()
bcachefs: kill inode_walker_entry.seen_this_pos
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Fix TDX MMIO #VE fault handling, and add two new Intel model numbers
for 'Pantherlake' and 'Diamond Rapids'"
* tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Add two Intel CPU model numbers
x86/tdx: Fix "in-kernel MMIO" check
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"lockdep:
- Fix potential deadlock between lockdep and RCU (Zhiguo Niu)
- Use str_plural() to address Coccinelle warning (Thorsten Blum)
- Add debuggability enhancement (Luis Claudio R. Goncalves)
static keys & calls:
- Fix static_key_slow_dec() yet again (Peter Zijlstra)
- Handle module init failure correctly in static_call_del_module()
(Thomas Gleixner)
- Replace pointless WARN_ON() in static_call_module_notify() (Thomas
Gleixner)
<linux/cleanup.h>:
- Add usage and style documentation (Dan Williams)
rwsems:
- Move is_rwsem_reader_owned() and rwsem_owner() under
CONFIG_DEBUG_RWSEMS (Waiman Long)
atomic ops, x86:
- Redeclare x86_32 arch_atomic64_{add,sub}() as void (Uros Bizjak)
- Introduce the read64_nonatomic macro to x86_32 with cx8 (Uros
Bizjak)"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
* tag 'locking-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Move is_rwsem_reader_owned() and rwsem_owner() under CONFIG_DEBUG_RWSEMS
jump_label: Fix static_key_slow_dec() yet again
static_call: Replace pointless WARN_ON() in static_call_module_notify()
static_call: Handle module init failure correctly in static_call_del_module()
locking/lockdep: Simplify character output in seq_line()
lockdep: fix deadlock issue between lockdep and rcu
lockdep: Use str_plural() to fix Coccinelle warning
cleanup: Add usage and style documentation
lockdep: suggest the fix for "lockdep bfs error:-1" on print_bfs_bug
locking/atomic/x86: Redeclare x86_32 arch_atomic64_{add,sub}() as void
locking/atomic/x86: Introduce the read64_nonatomic macro to x86_32 with cx8
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git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux
Pull coccinelle updates from Julia Lawall:
"Extend string_choices.cocci to use more available helpers
Ten patches from Hongbo Li extending string_choices.cocci with the
complete set of functions offered by include/linux/string_choices.h.
One patch from myself reducing the number of redundant cases that are
checked by Coccinelle, giving a small performance improvement"
* tag 'cocci-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
Reduce Coccinelle choices in string_choices.cocci
coccinelle: Remove unnecessary parentheses for only one possible change.
coccinelle: Add rules to find str_yes_no() replacements
coccinelle: Add rules to find str_on_off() replacements
coccinelle: Add rules to find str_write_read() replacements
coccinelle: Add rules to find str_read_write() replacements
coccinelle: Add rules to find str_enable{d}_disable{d}() replacements
coccinelle: Add rules to find str_lo{w}_hi{gh}() replacements
coccinelle: Add rules to find str_hi{gh}_lo{w}() replacements
coccinelle: Add rules to find str_false_true() replacements
coccinelle: Add rules to find str_true_false() replacements
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fix from Shuah Khan:
"One urgent fix to vDSO as automated testing is failing due to this
bug"
* tag 'linux_kselftest-next-6.12-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: vDSO: align stack for O2-optimized memcpy
|
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Merge all pending locking commits into a single branch.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
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The isomorphism neg_if_exp negates the test of a ?: conditional,
making it unnecessary to have an explicit case for a negated test
with the branches inverted.
At the same time, we can disable neg_if_exp in cases where a
different API function may be more suitable for a negated test.
Finally, in the non-patch cases, E matches an expression with
parentheses around it, so there is no need to mention ()
explicitly in the pattern. The () are still needed in the patch
cases, because we want to drop them, if they are present.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
The parentheses are only needed if there is a disjunction, ie a
set of possible changes. If there is only one pattern, we can
remove these parentheses. Just like the format:
- x
+ y
not:
(
- x
+ y
)
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_yes_no()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_on_off()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_write_read()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_read_write()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_enable{d}_
disable{d}() to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_lo{w}_hi{gh}()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
As other rules done, we add rules for str_hi{gh}_lo{w}()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
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As done with str_true_false(), add checks for str_false_true()
opportunities. A simple test can find over 9 cases currently
exist in the tree.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
|
After str_true_false() has been introduced in the tree,
we can add rules for finding places where str_true_false()
can be used. A simple test can find over 10 locations.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
|
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Pull x86 kvm updates from Paolo Bonzini:
"x86:
- KVM currently invalidates the entirety of the page tables, not just
those for the memslot being touched, when a memslot is moved or
deleted.
This does not traditionally have particularly noticeable overhead,
but Intel's TDX will require the guest to re-accept private pages
if they are dropped from the secure EPT, which is a non starter.
Actually, the only reason why this is not already being done is a
bug which was never fully investigated and caused VM instability
with assigned GeForce GPUs, so allow userspace to opt into the new
behavior.
- Advertise AVX10.1 to userspace (effectively prep work for the
"real" AVX10 functionality that is on the horizon)
- Rework common MSR handling code to suppress errors on userspace
accesses to unsupported-but-advertised MSRs
This will allow removing (almost?) all of KVM's exemptions for
userspace access to MSRs that shouldn't exist based on the vCPU
model (the actual cleanup is non-trivial future work)
- Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC)
splits the 64-bit value into the legacy ICR and ICR2 storage,
whereas Intel (APICv) stores the entire 64-bit value at the ICR
offset
- Fix a bug where KVM would fail to exit to userspace if one was
triggered by a fastpath exit handler
- Add fastpath handling of HLT VM-Exit to expedite re-entering the
guest when there's already a pending wake event at the time of the
exit
- Fix a WARN caused by RSM entering a nested guest from SMM with
invalid guest state, by forcing the vCPU out of guest mode prior to
signalling SHUTDOWN (the SHUTDOWN hits the VM altogether, not the
nested guest)
- Overhaul the "unprotect and retry" logic to more precisely identify
cases where retrying is actually helpful, and to harden all retry
paths against putting the guest into an infinite retry loop
- Add support for yielding, e.g. to honor NEED_RESCHED, when zapping
rmaps in the shadow MMU
- Refactor pieces of the shadow MMU related to aging SPTEs in
prepartion for adding multi generation LRU support in KVM
- Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is
enabled, i.e. when the CPU has already flushed the RSB
- Trace the per-CPU host save area as a VMCB pointer to improve
readability and cleanup the retrieval of the SEV-ES host save area
- Remove unnecessary accounting of temporary nested VMCB related
allocations
- Set FINAL/PAGE in the page fault error code for EPT violations if
and only if the GVA is valid. If the GVA is NOT valid, there is no
guest-side page table walk and so stuffing paging related metadata
is nonsensical
- Fix a bug where KVM would incorrectly synthesize a nested VM-Exit
instead of emulating posted interrupt delivery to L2
- Add a lockdep assertion to detect unsafe accesses of vmcs12
structures
- Harden eVMCS loading against an impossible NULL pointer deref
(really truly should be impossible)
- Minor SGX fix and a cleanup
- Misc cleanups
Generic:
- Register KVM's cpuhp and syscore callbacks when enabling
virtualization in hardware, as the sole purpose of said callbacks
is to disable and re-enable virtualization as needed
- Enable virtualization when KVM is loaded, not right before the
first VM is created
Together with the previous change, this simplifies a lot the logic
of the callbacks, because their very existence implies
virtualization is enabled
- Fix a bug that results in KVM prematurely exiting to userspace for
coalesced MMIO/PIO in many cases, clean up the related code, and
add a testcase
- Fix a bug in kvm_clear_guest() where it would trigger a buffer
overflow _if_ the gpa+len crosses a page boundary, which thankfully
is guaranteed to not happen in the current code base. Add WARNs in
more helpers that read/write guest memory to detect similar bugs
Selftests:
- Fix a goof that caused some Hyper-V tests to be skipped when run on
bare metal, i.e. NOT in a VM
- Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES
guest
- Explicitly include one-off assets in .gitignore. Past Sean was
completely wrong about not being able to detect missing .gitignore
entries
- Verify userspace single-stepping works when KVM happens to handle a
VM-Exit in its fastpath
- Misc cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits)
Documentation: KVM: fix warning in "make htmldocs"
s390: Enable KVM_S390_UCONTROL config in debug_defconfig
selftests: kvm: s390: Add VM run test case
KVM: SVM: let alternatives handle the cases when RSB filling is required
KVM: VMX: Set PFERR_GUEST_{FINAL,PAGE}_MASK if and only if the GVA is valid
KVM: x86/mmu: Use KVM_PAGES_PER_HPAGE() instead of an open coded equivalent
KVM: x86/mmu: Add KVM_RMAP_MANY to replace open coded '1' and '1ul' literals
KVM: x86/mmu: Fold mmu_spte_age() into kvm_rmap_age_gfn_range()
KVM: x86/mmu: Morph kvm_handle_gfn_range() into an aging specific helper
KVM: x86/mmu: Honor NEED_RESCHED when zapping rmaps and blocking is allowed
KVM: x86/mmu: Add a helper to walk and zap rmaps for a memslot
KVM: x86/mmu: Plumb a @can_yield parameter into __walk_slot_rmaps()
KVM: x86/mmu: Move walk_slot_rmaps() up near for_each_slot_rmap_range()
KVM: x86/mmu: WARN on MMIO cache hit when emulating write-protected gfn
KVM: x86/mmu: Detect if unprotect will do anything based on invalid_list
KVM: x86/mmu: Subsume kvm_mmu_unprotect_page() into the and_retry() version
KVM: x86: Rename reexecute_instruction()=>kvm_unprotect_and_retry_on_failure()
KVM: x86: Update retry protection fields when forcing retry on emulation failure
KVM: x86: Apply retry protection to "unprotect on failure" path
KVM: x86: Check EMULTYPE_WRITE_PF_TO_SP before unprotecting gfn
...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Vasily Gorbik:
- Clean up and improve vdso code: use SYM_* macros for function and
data annotations, add CFI annotations to fix GDB unwinding, optimize
the chacha20 implementation
- Add vfio-ap driver feature advertisement for use by libvirt and
mdevctl
* tag 's390-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/vfio-ap: Driver feature advertisement
s390/vdso: Use one large alternative instead of an alternative branch
s390/vdso: Use SYM_DATA_START_LOCAL()/SYM_DATA_END() for data objects
tools: Add additional SYM_*() stubs to linkage.h
s390/vdso: Use macros for annotation of asm functions
s390/vdso: Add CFI annotations to __arch_chacha20_blocks_nostack()
s390/vdso: Fix comment within __arch_chacha20_blocks_nostack()
s390/vdso: Get rid of permutation constants
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git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull module updates from Luis Chamberlain:
"There are a few fixes / cleanups from Vincent, Chunhui, and Petr, but
the most important part of this pull request is the Rust community
stepping up to help maintain both C / Rust code for future Rust module
support. We grow the set of modules maintainers by three now, and with
this hope to scale to help address what's needed to properly support
future Rust module support.
A lot of exciting stuff coming in future kernel releases.
This has been on linux-next for ~ 3 weeks now with no issues"
* tag 'modules-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
module: Refine kmemleak scanned areas
module: abort module loading when sysfs setup suffer errors
MAINTAINERS: scale modules with more reviewers
module: Clean up the description of MODULE_SIG_<type>
module: Split modules_install compression and in-kernel decompression
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
- crash fix in fbcon_putcs
- avoid a possible string memory overflow in sisfb
- minor code optimizations in omapfb and fbcon
* tag 'fbdev-for-6.12-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: sisfb: Fix strbuf array overflow
fbcon: break earlier in search_fb_in_map and search_for_mapped_con
fbdev: omapfb: Call of_node_put(ep) only once in omapdss_of_find_source_for_first_ep()
fbcon: Fix a NULL pointer dereference issue in fbcon_putcs
|
