| Message ID | 20230715150032.6917-7-andy.chiu@sifive.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | riscv: support kernel-mode Vector | expand |
| Context | Check | Description |
|---|---|---|
| conchuod/cover_letter | success | Series has a cover letter |
| conchuod/tree_selection | success | Guessed tree name to be for-next at HEAD 471aba2e4760 |
| conchuod/fixes_present | success | Fixes tag not required for -next series |
| conchuod/maintainers_pattern | success | MAINTAINERS pattern errors before the patch: 4 and now 4 |
| conchuod/verify_signedoff | success | Signed-off-by tag matches author and committer |
| conchuod/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| conchuod/build_rv64_clang_allmodconfig | fail | Failed to build the tree with this patch. |
| conchuod/module_param | success | Was 0 now: 0 |
| conchuod/build_rv64_gcc_allmodconfig | success | Errors and warnings before: 9 this patch: 9 |
| conchuod/build_rv32_defconfig | fail | Build failed |
| conchuod/dtb_warn_rv64 | success | Errors and warnings before: 3 this patch: 3 |
| conchuod/header_inline | success | No static functions without inline keyword in header files |
| conchuod/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 16 lines checked |
| conchuod/build_rv64_nommu_k210_defconfig | success | Build OK |
| conchuod/verify_fixes | success | No Fixes tag |
| conchuod/build_rv64_nommu_virt_defconfig | success | Build OK |
Hey Andy, On Sat, Jul 15, 2023 at 03:00:32PM +0000, Andy Chiu wrote: > Add a Kconfig to let user decides whether kernel-mode Vector in a > preemptive kernel should also run with preemption. If the config is 'N', > then all kernel-mode Vector code are run with preemption disabled. nit: "is run". > > Signed-off-by: Andy Chiu <andy.chiu@sifive.com> > --- > arch/riscv/Kconfig | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index a9e8b697fefb..da6a45ea42ec 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -500,6 +500,16 @@ config RISCV_ISA_V_DEFAULT_ENABLE > > If you don't know what to do here, say Y. > > +config RISCV_ISA_V_PREEMPTIVE_KMV > + bool "Run kernel-mode Vector with kernel preemption" > + depends on PREEMPTION > + depends on RISCV_ISA_V > + default y > + help > + Ordinarily the kernel disables preemption before running in-kernel > + Vector code. This config frees the kernel from disabling preemption > + by adding meory on demand for tracking kernel's V-context. s/meory/memory/ This should be part of the previous patch. Thanks, Conor.
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index a9e8b697fefb..da6a45ea42ec 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -500,6 +500,16 @@ config RISCV_ISA_V_DEFAULT_ENABLE If you don't know what to do here, say Y. +config RISCV_ISA_V_PREEMPTIVE_KMV + bool "Run kernel-mode Vector with kernel preemption" + depends on PREEMPTION + depends on RISCV_ISA_V + default y + help + Ordinarily the kernel disables preemption before running in-kernel + Vector code. This config frees the kernel from disabling preemption + by adding meory on demand for tracking kernel's V-context. + config TOOLCHAIN_HAS_ZBB bool default y
Add a Kconfig to let user decides whether kernel-mode Vector in a preemptive kernel should also run with preemption. If the config is 'N', then all kernel-mode Vector code are run with preemption disabled. Signed-off-by: Andy Chiu <andy.chiu@sifive.com> --- arch/riscv/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+)