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Currently we compare the value we are about to write to the Rx tail
register with the previous value of next_to_use. The problem with this
is we only write tail on 8 descriptor boundaries, but next_to_use is
updated whenever we clean Rx descriptors. Fix this by comparing the
value we are about to write to tail with the previously written tail
value. This will prevent duplicate Rx tail bumps.
Signed-off-by: Brett Creeley <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Display all of the supported and advertised link modes based on the PHY
capability with media.
Displaying all supported modes is more informative then only displaying
the current link mode.
Signed-off-by: Paul Greenwalt <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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When switching between FW and SW LLDP mode, the
number of configured TLV apps in the driver's
DCB configuration is getting out of synch with
what lldpad thinks is configured. This is causing
a problem when shutting down lldpad. The cleanup
is trying to delete TLV apps that are not defined
in the kernel.
Since the driver is keeping an accurate account
of the apps defined, use the drivers number of
apps to determine if there is an app to delete.
If the number of apps is <= 1, then do not
attempt to delete.
Signed-off-by: Dave Ertman <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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The function ice_dcb_rebuild had some logic
flaws in it, and also didn't differentiate
between FW and SW modes needs.
For FW flow, the willing setting was being
forced to OFF and left that way. Unwilling
in DCB FW mode is not a supported model.
Leave the config alone and use the return value
from the set command to determine if setting the
config was successful.
The SW DCB flow does not need to need to register
for MIB change events (as they are not used in
SW mode).
Use !is_sw_lldp checks to only perform FW specific
task while in FW mode.
Also adding a reapplication of the current DCB
config after a link event. Some NVMs are not
maintaining their DCB configs across link events.
Signed-off-by: Dave Ertman <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
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Due to some merge conflict, this file ended being alone under
Documentation/virtual.
The file itself is almost at ReST format. Just minor
adjustments are needed:
- Adjust title markup;
- Adjust a list identation;
- add a literal block markup;
- Add some blank lines.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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This file is already in ReST compatible format.
So, rename it and add to the kvm's index.rst.
While here, use the standard conversion for document titles.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title and chapter markups;
- Add markups for literal blocks;
- Add markups for tables;
- use :field: for field descriptions;
- Add blank lines and adjust indentation.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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This file is almost in ReST format. Just one change was
needed:
- Add markups for a literal block and change its indentation.
While here, use the standard markup for the document title.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title and chapter markups;
- Add markups for tables;
- Use list markups;
- Add markups for literal blocks;
- Add blank lines.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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This file is almost in ReST format. Just a small set of
changes were needed:
- Add markups for lists;
- Add markups for a literal block;
- Adjust whitespaces.
While here, use the standard markup for the document title.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title and chapter markups;
- Add markups for tables;
- Add markups for literal blocks;
- Add blank lines and adjust indentation.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title and chapter markups;
- Add markups for literal blocks;
- use :field: for field descriptions;
- Add blank lines and adjust indentation.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title and chapter markups;
- Convert tables;
- Add markups for literal blocks;
- use :field: for field descriptions;
- Add blank lines and adjust indentation
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Add a title for the document;
- Adjust whitespaces for it to be properly formatted after
parsed.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Add proper markups for titles;
- Adjust whitespaces and blank lines to match ReST
needs;
- Mark literal blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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convert api.txt document to ReST format while trying to keep
its format as close as possible with the authors intent, and
avoid adding uneeded markups.
- Use document title and chapter markups;
- Convert tables;
- Add markups for literal blocks;
- use :field: for field descriptions;
- Add blank lines and adjust indentation
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- adjust indentation and add blank lines as needed;
- adjust tables to match ReST accepted formats;
- mark code blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- adjust indentation and add blank lines as needed;
- adjust tables to match ReST accepted formats;
- use :field: markups.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- adjust indentation and add blank lines as needed;
- use :field: markups;
- Use cross-references;
- mark code blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use standard title markup;
- adjust lists;
- mark code blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- adjust indentation and add blank lines as needed;
- adjust tables to match ReST accepted formats;
- use :field: markups;
- mark code blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use standard markup for document title;
- Adjust indentation and add blank lines as needed;
- use the notes markup;
- mark code blocks as such.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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This document is almost in ReST format. The only thing
needed is to mark a list as such and to add an extra
whitespace.
Yet, let's also use the standard document title markup,
as it makes easier if anyone wants later to add sessions
to it.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- change indent to match ReST syntax;
- use proper table markups;
- use literal block markups.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use title markups;
- change indent to match ReST syntax;
- use proper table markups;
- use literal block markups.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Fix document title to match ReST format
- Convert the table to be properly recognized
- use proper markups for literal blocks
- Some indentation fixes to match ReST
While here, add an index for kvm devices.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Use document title markup;
- Convert tables;
- Add blank lines and adjust indentation.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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- Fix document title to match ReST format
- Convert the table to be properly recognized
- Some indentation fixes to match ReST syntax.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Several URLs are pointing to outdated places.
Update the references for the URLs whose contents still exists,
removing the others.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Instead of pointing for a pre-2.4 and a seaparate patch,
update it to match current upstream, as UML was merged
a long time ago.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Despite being an old document, it contains lots of information
that could still be useful.
The document has a nice style with makes easy to convert to
ReST. So, let's convert it to ReST.
This patch does:
- Use proper markups for titles;
- Mark and proper indent literal blocks;
- don't use an 'o' character for lists;
- other minor changes required for the doc to be parsed.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Add this file to a new kvm/arm index.rst, in order for it to
be shown as part of the virt book.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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The check cpu->hv_clock.system_time < 0 is redundant since system_time
is a u64 and hence can never be less than zero. But what was actually
meant is to check that the result is positive, since kernel_ns and
v->kvm->arch.kvmclock_offset are both s64.
Reported-by: Colin King <[email protected]>
Suggested-by: Sean Christopherson <[email protected]>
Addresses-Coverity: ("Macro compares unsigned to 0")
Reviewed-by: Miaohe Lin <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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x86_register enum is not used, let's remove it.
Signed-off-by: Eric Auger <[email protected]>
Suggested-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Define PT_MAX_FULL_LEVELS as PT64_ROOT_MAX_LEVEL, i.e. 5, to fix shadow
paging for 5-level guest page tables. PT_MAX_FULL_LEVELS is used to
size the arrays that track guest pages table information, i.e. using a
"max levels" of 4 causes KVM to access garbage beyond the end of an
array when querying state for level 5 entries. E.g. FNAME(gpte_changed)
will read garbage and most likely return %true for a level 5 entry,
soft-hanging the guest because FNAME(fetch) will restart the guest
instead of creating SPTEs because it thinks the guest PTE has changed.
Note, KVM doesn't yet support 5-level nested EPT, so PT_MAX_FULL_LEVELS
gets to stay "4" for the PTTYPE_EPT case.
Fixes: 855feb673640 ("KVM: MMU: Add 5 level EPT & Shadow page table support.")
Cc: [email protected]
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Hardcode the EPT page-walk level for L2 to be 4 levels, as KVM's MMU
currently also hardcodes the page walk level for nested EPT to be 4
levels. The L2 guest is all but guaranteed to soft hang on its first
instruction when L1 is using EPT, as KVM will construct 4-level page
tables and then tell hardware to use 5-level page tables.
Fixes: 855feb673640 ("KVM: MMU: Add 5 level EPT & Shadow page table support.")
Cc: [email protected]
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Fix some typos in the comments. Also fix coding style.
[Sean Christopherson rewrites the comment of write_fault_to_shadow_pgtable
field in struct kvm_vcpu_arch.]
Signed-off-by: Miaohe Lin <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Wrap calls to ->page_fault() with a small shim to directly invoke the
TDP fault handler when the kernel is using retpolines and TDP is being
used. Single out the TDP fault handler and annotate the TDP path as
likely to coerce the compiler into preferring it over the indirect
function call.
Rename tdp_page_fault() to kvm_tdp_page_fault(), as it's exposed outside
of mmu.c to allow inlining the shim.
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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kvm_make_request() provides smp_wmb() so pending_events changes are
guaranteed to be visible.
Signed-off-by: Miaohe Lin <[email protected]>
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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The KVM_REQ_EVENT request is already made in kvm_set_rflags(). We should
not make it again.
Signed-off-by: Miaohe Lin <[email protected]>
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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L2 guest calls vmcall and L1 checks the exit status does
correspond.
Signed-off-by: Eric Auger <[email protected]>
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
Tested-by: Wei Huang <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Add the basic infrastructure needed to test AMD nested SVM.
This is largely copied from the KVM unit test infrastructure.
Signed-off-by: Eric Auger <[email protected]>
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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get_gdt_base() and get_idt_base() only return the base address
of the descriptor tables. Soon we will need to get the size as well.
Change the prototype of those functions so that they return
the whole desc_ptr struct instead of the address field.
Signed-off-by: Eric Auger <[email protected]>
Reviewed-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
Reviewed-by: Wei Huang <[email protected]>
Reviewed-by: Krish Sadhukhan <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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If a dentry was not initially looked up while we were holding a
delegation, then we do still need to revalidate that it still holds
the same name. If there are multiple hard links to the same file,
then all the hard links need validation.
Reported-by: Benjamin Coddington <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>
Reviewed-by: Benjamin Coddington <[email protected]>
Tested-by: Benjamin Coddington <[email protected]>
[Anna: Put nfs_unset_verifier_delegated() under CONFIG_NFS_V4]
Signed-off-by: Anna Schumaker <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix memory corruption in scripts/kallsyms
- fix the vmlinux link stage to correctly update compile.h
* tag 'kbuild-fixes-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: fix mismatch between .version and include/generated/compile.h
scripts/kallsyms: fix memory corruption caused by write over-run
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This allows you to specify the type of rgmii-id that will enable phy
internal delay in ethernet phy-mode.
This adds all RGMII cases to all of get_pinmode() except LD11, because LD11
SoC doesn't support RGMII due to the constraint of the hardware. When RGMII
phy mode is specified in the devicetree for LD11, the driver will abort
with an error.
Signed-off-by: Kunihiko Hayashi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Recent months, our customer reported several kernel crashes all
preceding with following message:
NETDEV WATCHDOG: eth2 (enic): transmit queue 0 timed out
Error message of one of those crashes:
BUG: unable to handle kernel paging request at ffffffffa007e090
After analyzing severl vmcores, I found that most of crashes are
caused by memory corruption. And all the corrupted memory areas
are overwritten by data of network packets. Moreover, I also found
that the tx queues were enabled over watchdog reset.
After going through the source code, I found that in enic_stop(),
the tx queues stopped by netif_tx_disable() could be woken up over
a small time window between netif_tx_disable() and the
napi_disable() by the following code path:
napi_poll->
enic_poll_msix_wq->
vnic_cq_service->
enic_wq_service->
netif_wake_subqueue(enic->netdev, q_number)->
test_and_clear_bit(__QUEUE_STATE_DRV_XOFF, &txq->state)
In turn, upper netowrk stack could queue skb to ENIC NIC though
enic_hard_start_xmit(). And this might introduce some race condition.
Our customer comfirmed that this kind of kernel crash doesn't occur over
90 days since they applied this patch.
Signed-off-by: Firo Yang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Originally it was planned to create device id directories under
UUID/devinfo, but it got under UUID/devices by mistake. We really want
it under definfo so the bare device node names are not mixed with device
ids and are easy to enumerate.
Fixes: 668e48af7a94 ("btrfs: sysfs, add devid/dev_state kobject and device attributes")
Signed-off-by: Anand Jain <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
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Create directory /sys/fs/btrfs/UUID/devinfo to hold devices directories
by the id (unlike /devices).
Signed-off-by: Anand Jain <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
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The arm64 time code is not a clock provider, and just needs to call
of_clk_init().
Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.
Reviewed-by: Stephen Boyd <[email protected]>
Signed-off-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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