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[PATCH v2 for-4.19 0.5/13] xen: Introduce CONFIG_SELF_TESTS

Andrew Cooper posted 1 patch 5 months, 3 weeks ago
Patches applied successfully (tree, apply log)
git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20240528142238.1340228-1-andrew.cooper3@citrix.com
xen/Kconfig.debug      | 6 ++++++
xen/arch/x86/extable.c | 4 ++--
xen/arch/x86/setup.c   | 2 +-
3 files changed, 9 insertions(+), 3 deletions(-)
[PATCH v2 for-4.19 0.5/13] xen: Introduce CONFIG_SELF_TESTS
Posted by Andrew Cooper 5 months, 3 weeks ago 
... and move x86's stub_selftest() under this new option.

There is value in having these tests included in release builds too.

It will shortly be used to gate the bitops unit tests on all architectures.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Wei Liu <wl@xen.org>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien@xen.org>
CC: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
CC: Bertrand Marquis <bertrand.marquis@arm.com>
CC: Michal Orzel <michal.orzel@amd.com>
CC: Oleksii Kurochko <oleksii.kurochko@gmail.com>
CC: Shawn Anastasio <sanastasio@raptorengineering.com>
CC: consulting@bugseng.com <consulting@bugseng.com>
CC: Simone Ballarin <simone.ballarin@bugseng.com>
CC: Federico Serafini <federico.serafini@bugseng.com>
CC: Nicola Vetrini <nicola.vetrini@bugseng.com>

v2.5:
 * As suggested in "[PATCH v2 05/13] xen/bitops: Implement generic_f?sl() in
 lib/"

I've gone with SELF_TESTS rather than BOOT_TESTS, because already in bitops
we've got compile time tests (which aren't strictly boot time), and the
livepatching testing wants to be included here and is definitely not boot
time.
---
 xen/Kconfig.debug      | 6 ++++++
 xen/arch/x86/extable.c | 4 ++--
 xen/arch/x86/setup.c   | 2 +-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 61b24ac552cd..07ff7eb7ba83 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -29,6 +29,12 @@ config FRAME_POINTER
 	  maybe slower, but it gives very useful debugging information
 	  in case of any Xen bugs.
 
+config SELF_TESTS
+	bool "Extra self-testing"
+	default DEBUG
+	help
+	  Enable extra unit and functional testing.
+
 config COVERAGE
 	bool "Code coverage support"
 	depends on !LIVEPATCH
diff --git a/xen/arch/x86/extable.c b/xen/arch/x86/extable.c
index 8415cd1fa249..705cf9eb94ca 100644
--- a/xen/arch/x86/extable.c
+++ b/xen/arch/x86/extable.c
@@ -144,7 +144,7 @@ search_exception_table(const struct cpu_user_regs *regs, unsigned long *stub_ra)
     return 0;
 }
 
-#ifdef CONFIG_DEBUG
+#ifdef CONFIG_SELF_TESTS
 #include <asm/setup.h>
 #include <asm/traps.h>
 
@@ -214,7 +214,7 @@ int __init cf_check stub_selftest(void)
     return 0;
 }
 __initcall(stub_selftest);
-#endif
+#endif /* CONFIG_SELF_TESTS */
 
 unsigned long asmlinkage search_pre_exception_table(struct cpu_user_regs *regs)
 {
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index b50c9c84af6d..dd51e68dbe5b 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -742,7 +742,7 @@ static void noreturn init_done(void)
     system_state = SYS_STATE_active;
 
     /* Re-run stub recovery self-tests with CET-SS active. */
-    if ( IS_ENABLED(CONFIG_DEBUG) && cpu_has_xen_shstk )
+    if ( IS_ENABLED(CONFIG_SELF_TESTS) && cpu_has_xen_shstk )
         stub_selftest();
 
     domain_unpause_by_systemcontroller(dom0);

base-commit: 2d93f78bfe25f695d8ffb61d110da9df293ed71b
-- 
2.30.2
Re: [PATCH v2 for-4.19 0.5/13] xen: Introduce CONFIG_SELF_TESTS
Posted by Oleksii K. 5 months, 3 weeks ago 
On Tue, 2024-05-28 at 15:22 +0100, Andrew Cooper wrote:
> ... and move x86's stub_selftest() under this new option.
> 
> There is value in having these tests included in release builds too.
> 
> It will shortly be used to gate the bitops unit tests on all
> architectures.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Looks good to me.
We can consider it to be merged to 4.19:
Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

~ Oleksii
> ---
> CC: Jan Beulich <JBeulich@suse.com>
> CC: Roger Pau Monné <roger.pau@citrix.com>
> CC: Wei Liu <wl@xen.org>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Julien Grall <julien@xen.org>
> CC: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
> CC: Bertrand Marquis <bertrand.marquis@arm.com>
> CC: Michal Orzel <michal.orzel@amd.com>
> CC: Oleksii Kurochko <oleksii.kurochko@gmail.com>
> CC: Shawn Anastasio <sanastasio@raptorengineering.com>
> CC: consulting@bugseng.com <consulting@bugseng.com>
> CC: Simone Ballarin <simone.ballarin@bugseng.com>
> CC: Federico Serafini <federico.serafini@bugseng.com>
> CC: Nicola Vetrini <nicola.vetrini@bugseng.com>
> 
> v2.5:
>  * As suggested in "[PATCH v2 05/13] xen/bitops: Implement
> generic_f?sl() in
>  lib/"
> 
> I've gone with SELF_TESTS rather than BOOT_TESTS, because already in
> bitops
> we've got compile time tests (which aren't strictly boot time), and
> the
> livepatching testing wants to be included here and is definitely not
> boot
> time.
> ---
>  xen/Kconfig.debug      | 6 ++++++
>  xen/arch/x86/extable.c | 4 ++--
>  xen/arch/x86/setup.c   | 2 +-
>  3 files changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> index 61b24ac552cd..07ff7eb7ba83 100644
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -29,6 +29,12 @@ config FRAME_POINTER
>  	  maybe slower, but it gives very useful debugging
> information
>  	  in case of any Xen bugs.
>  
> +config SELF_TESTS
> +	bool "Extra self-testing"
> +	default DEBUG
> +	help
> +	  Enable extra unit and functional testing.
> +
>  config COVERAGE
>  	bool "Code coverage support"
>  	depends on !LIVEPATCH
> diff --git a/xen/arch/x86/extable.c b/xen/arch/x86/extable.c
> index 8415cd1fa249..705cf9eb94ca 100644
> --- a/xen/arch/x86/extable.c
> +++ b/xen/arch/x86/extable.c
> @@ -144,7 +144,7 @@ search_exception_table(const struct cpu_user_regs
> *regs, unsigned long *stub_ra)
>      return 0;
>  }
>  
> -#ifdef CONFIG_DEBUG
> +#ifdef CONFIG_SELF_TESTS
>  #include <asm/setup.h>
>  #include <asm/traps.h>
>  
> @@ -214,7 +214,7 @@ int __init cf_check stub_selftest(void)
>      return 0;
>  }
>  __initcall(stub_selftest);
> -#endif
> +#endif /* CONFIG_SELF_TESTS */
>  
>  unsigned long asmlinkage search_pre_exception_table(struct
> cpu_user_regs *regs)
>  {
> diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
> index b50c9c84af6d..dd51e68dbe5b 100644
> --- a/xen/arch/x86/setup.c
> +++ b/xen/arch/x86/setup.c
> @@ -742,7 +742,7 @@ static void noreturn init_done(void)
>      system_state = SYS_STATE_active;
>  
>      /* Re-run stub recovery self-tests with CET-SS active. */
> -    if ( IS_ENABLED(CONFIG_DEBUG) && cpu_has_xen_shstk )
> +    if ( IS_ENABLED(CONFIG_SELF_TESTS) && cpu_has_xen_shstk )
>          stub_selftest();
>  
>      domain_unpause_by_systemcontroller(dom0);
> 
> base-commit: 2d93f78bfe25f695d8ffb61d110da9df293ed71b
Re: [PATCH v2 for-4.19 0.5/13] xen: Introduce CONFIG_SELF_TESTS
Posted by Jan Beulich 5 months, 3 weeks ago 
On 28.05.2024 16:22, Andrew Cooper wrote:
> ... and move x86's stub_selftest() under this new option.
> 
> There is value in having these tests included in release builds too.
> 
> It will shortly be used to gate the bitops unit tests on all architectures.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

Reviewed-by: Jan Beulich <jbeulich@suse.com>

> I've gone with SELF_TESTS rather than BOOT_TESTS, because already in bitops
> we've got compile time tests (which aren't strictly boot time), and the
> livepatching testing wants to be included here and is definitely not boot
> time.

I second this consideration, fwiw.

Jan

Patchew 2.1-devel-b67e4c2

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