Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 9983ac7..dbb6806 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -113,7 +113,7 @@
the GPE dispatcher.
This facility can be used to prevent such uncontrolled
GPE floodings.
- Format: <int>
+ Format: <byte>
acpi_no_auto_serialize [HW,ACPI]
Disable auto-serialization of AML methods
@@ -136,6 +136,10 @@
dynamic table installation which will install SSDT
tables to /sys/firmware/acpi/tables/dynamic.
+ acpi_no_watchdog [HW,ACPI,WDT]
+ Ignore the ACPI-based watchdog interface (WDAT) and let
+ a native driver control the watchdog device instead.
+
acpi_rsdp= [ACPI,EFI,KEXEC]
Pass the RSDP address to the kernel, mostly used
on machines running EFI runtime service to boot the
@@ -563,7 +567,13 @@
loops can be debugged more effectively on production
systems.
- clearcpuid=BITNUM [X86]
+ clocksource.max_cswd_read_retries= [KNL]
+ Number of clocksource_watchdog() retries due to
+ external delays before the clock will be marked
+ unstable. Defaults to three retries, that is,
+ four attempts to read the clock under test.
+
+ clearcpuid=BITNUM[,BITNUM...] [X86]
Disable CPUID feature X for the kernel. See
arch/x86/include/asm/cpufeatures.h for the valid bit
numbers. Note the Linux specific bits are not necessarily
@@ -2663,6 +2673,8 @@
mds=off [X86]
tsx_async_abort=off [X86]
kvm.nx_huge_pages=off [X86]
+ no_entry_flush [PPC]
+ no_uaccess_flush [PPC]
Exceptions:
This does not have any effect on
@@ -2737,7 +2749,7 @@
<name>,<region-number>[,<base>,<size>,<buswidth>,<altbuswidth>]
mtdparts= [MTD]
- See drivers/mtd/cmdlinepart.c.
+ See drivers/mtd/parsers/cmdlinepart.c
multitce=off [PPC] This parameter disables the use of the pSeries
firmware feature for updating multiple TCE entries
@@ -2985,6 +2997,8 @@
noefi Disable EFI runtime services support.
+ no_entry_flush [PPC] Don't flush the L1-D cache when entering the kernel.
+
noexec [IA-64]
noexec [X86]
@@ -3034,6 +3048,9 @@
nospec_store_bypass_disable
[HW] Disable all mitigations for the Speculative Store Bypass vulnerability
+ no_uaccess_flush
+ [PPC] Don't flush the L1-D cache after accessing user data.
+
noxsave [BUGS=X86] Disables x86 extended register state save
and restore using xsave. The kernel will fallback to
enabling legacy floating-point and sse state.
@@ -4575,6 +4592,26 @@
spia_pedr=
spia_peddr=
+ srbds= [X86,INTEL]
+ Control the Special Register Buffer Data Sampling
+ (SRBDS) mitigation.
+
+ Certain CPUs are vulnerable to an MDS-like
+ exploit which can leak bits from the random
+ number generator.
+
+ By default, this issue is mitigated by
+ microcode. However, the microcode fix can cause
+ the RDRAND and RDSEED instructions to become
+ much slower. Among other effects, this will
+ result in reduced throughput from /dev/urandom.
+
+ The microcode mitigation can be disabled with
+ the following option:
+
+ off: Disable mitigation and remove
+ performance impact to RDRAND and RDSEED
+
srcutree.counter_wrap_check [KNL]
Specifies how frequently to check for
grace-period sequence counter wrap for the
@@ -5001,8 +5038,7 @@
usbcore.old_scheme_first=
[USB] Start with the old device initialization
- scheme, applies only to low and full-speed devices
- (default 0 = off).
+ scheme (default 0 = off).
usbcore.usbfs_memory_mb=
[USB] Memory limit (in MB) for buffers allocated by
@@ -5101,13 +5137,13 @@
Flags is a set of characters, each corresponding
to a common usb-storage quirk flag as follows:
a = SANE_SENSE (collect more than 18 bytes
- of sense data);
+ of sense data, not on uas);
b = BAD_SENSE (don't collect more than 18
- bytes of sense data);
+ bytes of sense data, not on uas);
c = FIX_CAPACITY (decrease the reported
device capacity by one sector);
d = NO_READ_DISC_INFO (don't use
- READ_DISC_INFO command);
+ READ_DISC_INFO command, not on uas);
e = NO_READ_CAPACITY_16 (don't use
READ_CAPACITY_16 command);
f = NO_REPORT_OPCODES (don't use report opcodes
@@ -5121,18 +5157,20 @@
device);
j = NO_REPORT_LUNS (don't use report luns
command, uas only);
+ k = NO_SAME (do not use WRITE_SAME, uas only)
l = NOT_LOCKABLE (don't try to lock and
- unlock ejectable media);
+ unlock ejectable media, not on uas);
m = MAX_SECTORS_64 (don't transfer more
- than 64 sectors = 32 KB at a time);
+ than 64 sectors = 32 KB at a time,
+ not on uas);
n = INITIAL_READ10 (force a retry of the
- initial READ(10) command);
+ initial READ(10) command, not on uas);
o = CAPACITY_OK (accept the capacity
- reported by the device);
+ reported by the device, not on uas);
p = WRITE_CACHE (the device cache is ON
- by default);
+ by default, not on uas);
r = IGNORE_RESIDUE (the device reports
- bogus residue values);
+ bogus residue values, not on uas);
s = SINGLE_LUN (the device has only one
Logical Unit);
t = NO_ATA_1X (don't allow ATA(12) and ATA(16)
@@ -5141,7 +5179,8 @@
w = NO_WP_DETECT (don't test whether the
medium is write-protected).
y = ALWAYS_SYNC (issue a SYNCHRONIZE_CACHE
- even if the device claims no cache)
+ even if the device claims no cache,
+ not on uas)
Example: quirks=0419:aaf5:rl,0421:0433:rc
user_debug= [KNL,ARM]
@@ -5419,6 +5458,10 @@
This option is obsoleted by the "nopv" option, which
has equivalent effect for XEN platform.
+ xen_no_vector_callback
+ [KNL,X86,XEN] Disable the vector callback for Xen
+ event channel interrupts.
+
xen_scrub_pages= [XEN]
Boolean option to control scrubbing pages before giving them back
to Xen, for use by other domains. Can be also changed at runtime
@@ -5437,6 +5480,14 @@
as generic guest with no PV drivers. Currently support
XEN HVM, KVM, HYPER_V and VMWARE guest.
+ xen.event_eoi_delay= [XEN]
+ How long to delay EOI handling in case of event
+ storms (jiffies). Default is 10.
+
+ xen.event_loop_timeout= [XEN]
+ After which time (jiffies) the event handling loop
+ should start to delay EOI handling. Default is 2.
+
xirc2ps_cs= [NET,PCMCIA]
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]