tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
topic/ppc-kvm
head: c95bf4c16099f2ed29a7f6949559bc4187d30710
commit: 6be7fd9b644945c2e4f9f071b9f8caa57f4e5590 [5/6] KVM: PPC: Add support
for nestedv2 guests
config: powerpc-allmodconfig
(https://download.01.org/0day-ci/
There is only one Kconfig user of CONFIG_EMBEDDED and it can be
switched to EXPERT or "if !ARCH_MULTIPLATFORM" (suggested by Arnd).
Signed-off-by: Randy Dunlap
Cc: Russell King
Cc: linux-arm-ker...@lists.infradead.org
Cc: Arnd Bergmann
Cc: Jason A. Donenfeld
Cc: wiregu...@lists.zx2c4.com
Cc: l
tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
topic/ppc-kvm
head: c95bf4c16099f2ed29a7f6949559bc4187d30710
commit: adf03dd2204acf7eab000a02bdfe50099f2fa089 [4/6] KVM: PPC: Book3s HV:
Hold LPIDs in an unsigned long
config: powerpc-allmodconfig
(https://download.01.or
Christophe Leroy writes:
> objtool report the following warning:
>
> arch/powerpc/kernel/ptrace/ptrace-view.o: warning: objtool:
> gpr32_set_common+0x23c (.text+0x860): redundant UACCESS disable
>
> gpr32_set_common() conditionnaly opens and closes UACCESS based on
> whether kbuf point is NU
tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
topic/ppc-kvm
head: c95bf4c16099f2ed29a7f6949559bc4187d30710
commit: 596bda338f11c9d2f860439733e5239100803d6c [3/6] KVM: PPC: Add helper
library for Guest State Buffers
config: powerpc-allmodconfig
(https://download.01.o
On 15/8/23 8:45 pm, Michael Ellerman wrote:
"Nicholas Piggin" writes:
On Mon Aug 7, 2023 at 11:45 AM AEST, Jordan Niethe wrote:
The LPID register is 32 bits long. The host keeps the lpids for each
guest in an unsigned word struct kvm_arch. Currently, LPIDs are already
limited by mmu_lpid_bi
On 14/8/23 6:27 pm, Nicholas Piggin wrote:
On Mon Aug 7, 2023 at 11:45 AM AEST, Jordan Niethe wrote:
More "wrapper" style accessor generating macros will be introduced for
the nestedv2 guest support. Rename the existing macros with more
descriptive names now so there is a consistent naming co
On 14/8/23 6:15 pm, David Laight wrote:
From: Jordan Niethe
Sent: 07 August 2023 02:46
The LPID register is 32 bits long. The host keeps the lpids for each
guest in an unsigned word struct kvm_arch. Currently, LPIDs are already
limited by mmu_lpid_bits and KVM_MAX_NESTED_GUESTS_SHIFT.
The n
On 14/8/23 6:12 pm, Nicholas Piggin wrote:
On Mon Aug 7, 2023 at 11:45 AM AEST, Jordan Niethe wrote:
The LPID register is 32 bits long. The host keeps the lpids for each
guest in an unsigned word struct kvm_arch. Currently, LPIDs are already
limited by mmu_lpid_bits and KVM_MAX_NESTED_GUESTS_
On 14/8/23 6:08 pm, Nicholas Piggin wrote:
On Mon Aug 7, 2023 at 11:45 AM AEST, Jordan Niethe wrote:
There are already some getter and setter functions used for accessing
vcpu register state, e.g. kvmppc_get_pc(). There are also more
complicated examples that are generated by macros like
kvmp
PCI core API pci_dev_id() can be used to get the BDF number for a pci
device. We don't need to compose it mannually. Use pci_dev_id() to
simplify the code a little bit.
Signed-off-by: Jialin Zhang
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 3 +--
1 file changed, 1 insertion(+), 2 deletio
On Tue, 2023-08-15 at 07:27 -0400, Nayna Jain wrote:
> On secure boot enabled PowerVM LPAR, third party code signing keys are
> needed during early boot to verify signed third party modules. These
> third party keys are stored in moduledb object in the Platform
> KeyStore (PKS).
>
> Load third par
On Tue, Aug 15, 2023, Ackerley Tng wrote:
> Sean Christopherson writes:
>
> >> I feel that memslots form a natural way of managing usage of the gmem
> >> file. When a memslot is created, it is using the file; hence we take a
> >> refcount on the gmem file, and as memslots are removed, we drop
> >
On Tue, 15 Aug 2023 17:25:13 +
Christophe Leroy wrote:
> I just sent a patch with additional pr_info() in order to help locate
> the issue, please provide output with that patch.
>
> Thanks
> Christophe
Thanks for your efforts Christophe! With the patch applied I get this output +
a blank
Sean Christopherson writes:
> On Mon, Aug 07, 2023, Ackerley Tng wrote:
>> I’d like to propose an alternative to the refcounting approach between
>> the gmem file and associated kvm, where we think of KVM’s memslots as
>> users of the gmem file.
>>
>> Instead of having the gmem file pin the VM (i
__set_pte_at() handles 3 main cases with #ifdefs plus the 'percpu'
subcase which leads to code duplication.
Rewrite the function using IS_ENABLED() to minimise the total number
of cases and remove duplicated code.
Signed-off-by: Christophe Leroy
---
v2: Reorganise comments, first case becomes th
Le 14/08/2023 à 19:27, Erhard Furtner a écrit :
> On Mon, 14 Aug 2023 09:40:44 +
> Christophe Leroy wrote:
>
>> Interesting. That means we get stuck somewhere around MMU_init()
>>
>> We know that MMU_init_hw() is called and runs at least until:
>>
>> pr_info("Total memory = %lldMB; us
Signed-off-by: Christophe Leroy
---
arch/powerpc/kernel/btext.c | 2 ++
arch/powerpc/mm/book3s32/kuap.c | 5 +
arch/powerpc/mm/book3s32/mmu.c | 3 +++
arch/powerpc/mm/kasan/init_32.c | 3 +++
arch/powerpc/mm/pgtable_32.c| 4
5 files changed, 17 insertions(+)
diff --git a/arch/p
On Tue, 15 Aug 2023, David Hildenbrand wrote:
> On 15.08.23 08:34, Hugh Dickins wrote:
> > On Mon, 14 Aug 2023, Jann Horn wrote:
> >>
> >> /* step 4: remove page table */
> >> + if (strcmp(current->comm, "DELAYME") == 0) {
> >> + pr_warn("%s: BEGIN DELAY INJECTION\n", _
Update Kconfig to enable machine keyring and limit to CA certificates
on PowerVM. Only key signing CA keys are allowed.
Signed-off-by: Nayna Jain
Reviewed-and-tested-by: Mimi Zohar
Reviewed-by: Jarkko Sakkinen
---
security/integrity/Kconfig | 4 +++-
1 file changed, 3 insertions(+), 1 deletion
Keys that derive their trust from an entity such as a security officer,
administrator, system owner, or machine owner are said to have "imputed
trust". CA keys with imputed trust can be loaded onto the machine keyring.
The mechanism for loading these keys onto the machine keyring is platform
depend
On a secure boot enabled PowerVM guest, local and third party code signing
keys are needed to verify signed applications, configuration files, and
kernel modules.
Loading these keys onto either the .secondary_trusted_keys or .ima
keyrings requires the certificates be signed by keys on the
.builtin
trust_moklist() is specific to UEFI enabled systems. Other platforms
rely only on the Kconfig.
Define a generic wrapper named imputed_trust_enabled().
Signed-off-by: Nayna Jain
Reviewed-off-by: Mimi Zohar
---
security/integrity/digsig.c| 2 +-
security/integrity/integrity.
Linus Walleij writes:
> On Tue, Aug 15, 2023 at 9:30 AM Michael Ellerman wrote:
>> Linus Walleij writes:
>
>> > - return ((unsigned long)__va(pmd_val(pmd) & ~PMD_MASKED_BITS));
>> > + return (const void *)((unsigned long)__va(pmd_val(pmd) &
>> > ~PMD_MASKED_BITS));
>>
>> This can also j
Christophe Leroy writes:
> __set_pte_at() handles 3 main cases with #ifdefs plus the 'percpu'
> subcase which leads to code duplication.
>
> Rewrite the function using IS_ENABLED() to minimise the total number
> of cases and remove duplicated code.
I think the code change is good, but the comment
On secure boot enabled PowerVM LPAR, third party code signing keys are
needed during early boot to verify signed third party modules. These
third party keys are stored in moduledb object in the Platform
KeyStore (PKS).
Load third party code signing keys onto .secondary_trusted_keys keyring.
Signe
trust_mok variable is accessed within a single function locally.
Change trust_mok from global to local static variable.
Signed-off-by: Nayna Jain
Reviewed-and-tested-by: Mimi Zohar
Reviewed-by: Jarkko Sakkinen
---
security/integrity/platform_certs/machine_keyring.c | 4 ++--
1 file changed, 2
On non-UEFI platforms, handle restrict_link_by_ca failures differently.
Certificates which do not satisfy CA restrictions on non-UEFI platforms
are ignored.
Signed-off-by: Nayna Jain
Reviewed-and-tested-by: Mimi Zohar
Acked-by: Jarkko Sakkinen
---
security/integrity/platform_certs/machine_key
zalloc_maybe_bootmem() is only used by PCI related functions.
Move it into pci-common.c and remove the always built alloc.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/pci.h | 2 ++
arch/powerpc/include/asm/setup.h | 1 -
arch/powerpc/kernel/pci-common.c | 16 ++
Joel Stanley writes:
> On Fri, 7 Jul 2023 at 05:11, Mahesh Salgaonkar wrote:
>>
>> opal_prd_msg_notifier extracts the opal prd message size from the message
>> header and uses it for allocating opal_prd_msg_queue_item that includes
>> the correct message size to be copied. However, while running
"Nicholas Piggin" writes:
> On Mon Aug 7, 2023 at 11:45 AM AEST, Jordan Niethe wrote:
>> The LPID register is 32 bits long. The host keeps the lpids for each
>> guest in an unsigned word struct kvm_arch. Currently, LPIDs are already
>> limited by mmu_lpid_bits and KVM_MAX_NESTED_GUESTS_SHIFT.
>>
>
On 8/15/23, Linus Torvalds wrote:
> On Tue, 15 Aug 2023 at 07:12, kernel test robot
> wrote:
>>
>> kernel test robot noticed a 6.3% improvement of stress-ng.zero.ops_per_sec
>> on:
>
> WTF? That's ridiculous. Why would that even test new_inode() at all?
> And why would it make any difference anyw
On Tue, Aug 15, 2023 at 9:30 AM Michael Ellerman wrote:
> Linus Walleij writes:
> > - return ((unsigned long)__va(pmd_val(pmd) & ~PMD_MASKED_BITS));
> > + return (const void *)((unsigned long)__va(pmd_val(pmd) &
> > ~PMD_MASKED_BITS));
>
> This can also just be:
>
> return __va(
On Tue, 15 Aug 2023 at 07:12, kernel test robot wrote:
>
> kernel test robot noticed a 6.3% improvement of stress-ng.zero.ops_per_sec on:
WTF? That's ridiculous. Why would that even test new_inode() at all?
And why would it make any difference anyway to prefetch a new inode?
The 'zero' test claim
Linus Walleij writes:
> Making virt_to_pfn() a static inline taking a strongly typed
> (const void *) makes the contract of a passing a pointer of that
> type to the function explicit and exposes any misuse of the
> macro virt_to_pfn() acting polymorphic and accepting many types
> such as (void *
Christophe Leroy writes:
> Le 14/08/2023 à 14:37, Michael Ellerman a écrit :
>> Linus Walleij writes:
>>> Making virt_to_pfn() a static inline taking a strongly typed
>>> (const void *) makes the contract of a passing a pointer of that
>>> type to the function explicit and exposes any misuse of t
e as below:
-->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230815/202308151426.97be5bd8-oliver.s
On 15.08.23 08:34, Hugh Dickins wrote:
On Mon, 14 Aug 2023, Jann Horn wrote:
On Wed, Jul 12, 2023 at 6:42 AM Hugh Dickins wrote:
Bring collapse_and_free_pmd() back into collapse_pte_mapped_thp().
It does need mmap_read_lock(), but it does not need mmap_write_lock(),
nor vma_start_write() nor i
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