Implement H_RPT_INVALIDATE hcall and add KVM capability
KVM_CAP_PPC_RPT_INVALIDATE to indicate the support for the same.
This hcall does two types of TLB invalidations:
1. Process-scoped invalidations for guests with LPCR[GTSE]=0.
This is currently not used in KVM as GTSE is not usually
dis
H_RPT_INVALIDATE hcall needs to perform process scoped tlbie
invalidations of L1 and nested guests from L0. This needs RS register
for TLBIE instruction to contain both PID and LPID. Introduce
primitives that execute tlbie instruction with both PID
and LPID set in prepartion for H_RPT_INVALIDATE hc
This patchset adds support for the new hcall H_RPT_INVALIDATE
and replaces the nested tlb flush calls with this new hcall
if support for the same exists.
Changes in v4:
-
- While reusing the tlb flush routines from radix_tlb.c in v3,
setting of LPID got missed out. Take care of this
In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall
H_RPT_INVALIDATE if available. The availability of this hcall
is determined from "hcall-rpt-invalidate" string in ibm,hypertas-functions
DT property.
Signed-off-by: Bharata B Rao
Reviewed-by: Fabiano Rosas
---
arch/powerpc/kvm/bo
The 'syscall' variables are not directly used in the commands.
Remove the $(srctree)/ prefix because we can rely on VPATH.
Signed-off-by: Masahiro Yamada
---
arch/alpha/kernel/syscalls/Makefile | 2 +-
arch/arm/tools/Makefile | 2 +-
arch/ia64/kernel/syscalls/Makefile
The rules in these Makefiles cannot detect the command line change
because the prerequisite 'FORCE' is missing.
Adding 'FORCE' will result in the headers being rebuilt every time
because the 'targets' additions are also wrong; the file paths in
'targets' must be relative to the current Makefile.
On Thu, Jan 28, 2021 at 9:52 AM Masahiro Yamada wrote:
>
> These are NOT exported to userspace.
>
> The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.
>
> Signed-off-by: Masahiro Yamada
Applied to linux-kbuild/fixes.
> ---
>
> arch/sparc/include/asm/Kbuild | 2 --
> 1 file
