* [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2
2022-11-25 11:39 [PATCH 0/4] riscv: alternative-macros.h cleanups Andrew Jones
@ 2022-11-25 11:39 ` Andrew Jones
2022-11-25 13:06 ` Andrew Jones
2022-11-25 11:39 ` [PATCH 2/4] riscv: alternatives: Don't name unused macro parameters Andrew Jones
` (3 subsequent siblings)
4 siblings, 1 reply; 9+ messages in thread
From: Andrew Jones @ 2022-11-25 11:39 UTC (permalink / raw)
To: linux-riscv
Cc: Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Stuebner,
Conor Dooley, Lad Prabhakar, prabhakar.csengg
Build __ALTERNATIVE_CFG_2 by adding on to __ALTERNATIVE_CFG rather
than duplicating it.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
---
arch/riscv/include/asm/alternative-macros.h | 18 ++----------------
1 file changed, 2 insertions(+), 16 deletions(-)
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index ec2f3f1b836f..64be770df89a 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -49,14 +49,7 @@
.macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
new_c_2, vendor_id_2, errata_id_2, enable_2
-886 :
- .option push
- .option norvc
- .option norelax
- \old_c
- .option pop
-887 :
- ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1
+ __ALTERNATIVE_CFG old_c, new_c_1, vendor_id_1, errata_id_1, enable_1
ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
.endm
@@ -116,14 +109,7 @@
enable_1, \
new_c_2, vendor_id_2, errata_id_2, \
enable_2) \
- "886 :\n" \
- ".option push\n" \
- ".option norvc\n" \
- ".option norelax\n" \
- old_c "\n" \
- ".option pop\n" \
- "887 :\n" \
- ALT_NEW_CONTENT(vendor_id_1, errata_id_1, enable_1, new_c_1) \
+ __ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1) \
ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2)
#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
--
2.38.1
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^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2
2022-11-25 11:39 ` [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2 Andrew Jones
@ 2022-11-25 13:06 ` Andrew Jones
2022-11-25 13:26 ` Conor Dooley
0 siblings, 1 reply; 9+ messages in thread
From: Andrew Jones @ 2022-11-25 13:06 UTC (permalink / raw)
To: linux-riscv
Cc: Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Stuebner,
Conor Dooley, Lad Prabhakar, prabhakar.csengg
On Fri, Nov 25, 2022 at 12:39:56PM +0100, Andrew Jones wrote:
> Build __ALTERNATIVE_CFG_2 by adding on to __ALTERNATIVE_CFG rather
> than duplicating it.
>
> Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
> ---
> arch/riscv/include/asm/alternative-macros.h | 18 ++----------------
> 1 file changed, 2 insertions(+), 16 deletions(-)
>
> diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
> index ec2f3f1b836f..64be770df89a 100644
> --- a/arch/riscv/include/asm/alternative-macros.h
> +++ b/arch/riscv/include/asm/alternative-macros.h
> @@ -49,14 +49,7 @@
>
> .macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
> new_c_2, vendor_id_2, errata_id_2, enable_2
> -886 :
> - .option push
> - .option norvc
> - .option norelax
> - \old_c
> - .option pop
> -887 :
> - ALT_NEW_CONTENT \vendor_id_1, \errata_id_1, \enable_1, \new_c_1
> + __ALTERNATIVE_CFG old_c, new_c_1, vendor_id_1, errata_id_1, enable_1
I just realized that I forgot my slashes on these macro arguments.
I'll wait for other feedback before sending a v2.
Thanks,
drew
> ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
> .endm
>
> @@ -116,14 +109,7 @@
> enable_1, \
> new_c_2, vendor_id_2, errata_id_2, \
> enable_2) \
> - "886 :\n" \
> - ".option push\n" \
> - ".option norvc\n" \
> - ".option norelax\n" \
> - old_c "\n" \
> - ".option pop\n" \
> - "887 :\n" \
> - ALT_NEW_CONTENT(vendor_id_1, errata_id_1, enable_1, new_c_1) \
> + __ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1) \
> ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2)
>
> #define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
> --
> 2.38.1
>
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2
2022-11-25 13:06 ` Andrew Jones
@ 2022-11-25 13:26 ` Conor Dooley
2022-11-29 14:45 ` Andrew Jones
0 siblings, 1 reply; 9+ messages in thread
From: Conor Dooley @ 2022-11-25 13:26 UTC (permalink / raw)
To: Andrew Jones
Cc: linux-riscv, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Heiko Stuebner, Lad Prabhakar, prabhakar.csengg
On Fri, Nov 25, 2022 at 02:06:47PM +0100, Andrew Jones wrote:
> I just realized that I forgot my slashes on these macro arguments.
>
> I'll wait for other feedback before sending a v2.
While I think of it, perhaps for v2 you could yoink that comment
improvement of Heiko's:
https://lore.kernel.org/linux-riscv/CA+V-a8to-Wr2x8qbxnktTzXrWjTGvtCqwXT27A8EmHTTG7Lbkg@mail.gmail.com/T/#m92aee3a065a01a023e0960aec9c0acb8f9fcc77c
_______________________________________________
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2
2022-11-25 13:26 ` Conor Dooley
@ 2022-11-29 14:45 ` Andrew Jones
0 siblings, 0 replies; 9+ messages in thread
From: Andrew Jones @ 2022-11-29 14:45 UTC (permalink / raw)
To: Conor Dooley
Cc: linux-riscv, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Heiko Stuebner, Lad Prabhakar, prabhakar.csengg
On Fri, Nov 25, 2022 at 01:26:20PM +0000, Conor Dooley wrote:
> On Fri, Nov 25, 2022 at 02:06:47PM +0100, Andrew Jones wrote:
>
> > I just realized that I forgot my slashes on these macro arguments.
> >
> > I'll wait for other feedback before sending a v2.
>
> While I think of it, perhaps for v2 you could yoink that comment
> improvement of Heiko's:
> https://lore.kernel.org/linux-riscv/CA+V-a8to-Wr2x8qbxnktTzXrWjTGvtCqwXT27A8EmHTTG7Lbkg@mail.gmail.com/T/#m92aee3a065a01a023e0960aec9c0acb8f9fcc77c
>
It looks like Prabhakar plans to do that when respinning, so I'll leave
that and just post v2 with the macro fix.
Thanks,
drew
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^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH 2/4] riscv: alternatives: Don't name unused macro parameters
2022-11-25 11:39 [PATCH 0/4] riscv: alternative-macros.h cleanups Andrew Jones
2022-11-25 11:39 ` [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2 Andrew Jones
@ 2022-11-25 11:39 ` Andrew Jones
2022-11-25 11:39 ` [PATCH 3/4] riscv: alternatives: Drop the underscores from the assembly macro names Andrew Jones
` (2 subsequent siblings)
4 siblings, 0 replies; 9+ messages in thread
From: Andrew Jones @ 2022-11-25 11:39 UTC (permalink / raw)
To: linux-riscv
Cc: Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Stuebner,
Conor Dooley, Lad Prabhakar, prabhakar.csengg
Without CONFIG_RISCV_ALTERNATIVE only the first parameter of the
ALTERNATIVE macros is needed. Use ... for the rest to cut down on
clutter. While there, fix a couple space vs. tab issues.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
---
arch/riscv/include/asm/alternative-macros.h | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index 64be770df89a..a5a8a2a3c267 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -130,28 +130,22 @@
\old_c
.endm
-#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+#define _ALTERNATIVE_CFG(old_c, ...) \
__ALTERNATIVE_CFG old_c
-#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- CONFIG_k_1, \
- new_c_2, vendor_id_2, errata_id_2, \
- CONFIG_k_2) \
- __ALTERNATIVE_CFG old_c
+#define _ALTERNATIVE_CFG_2(old_c, ...) \
+ __ALTERNATIVE_CFG old_c
#else /* !__ASSEMBLY__ */
-#define __ALTERNATIVE_CFG(old_c) \
+#define __ALTERNATIVE_CFG(old_c) \
old_c "\n"
-#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+#define _ALTERNATIVE_CFG(old_c, ...) \
__ALTERNATIVE_CFG(old_c)
-#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- CONFIG_k_1, \
- new_c_2, vendor_id_2, errata_id_2, \
- CONFIG_k_2) \
- __ALTERNATIVE_CFG(old_c)
+#define _ALTERNATIVE_CFG_2(old_c, ...) \
+ __ALTERNATIVE_CFG(old_c)
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_RISCV_ALTERNATIVE */
--
2.38.1
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^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 3/4] riscv: alternatives: Drop the underscores from the assembly macro names
2022-11-25 11:39 [PATCH 0/4] riscv: alternative-macros.h cleanups Andrew Jones
2022-11-25 11:39 ` [PATCH 1/4] riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2 Andrew Jones
2022-11-25 11:39 ` [PATCH 2/4] riscv: alternatives: Don't name unused macro parameters Andrew Jones
@ 2022-11-25 11:39 ` Andrew Jones
2022-11-25 11:39 ` [PATCH 4/4] riscv: Don't duplicate _ALTERNATIVE_CFG* macros Andrew Jones
2022-11-26 17:13 ` [PATCH 0/4] riscv: alternative-macros.h cleanups Conor Dooley
4 siblings, 0 replies; 9+ messages in thread
From: Andrew Jones @ 2022-11-25 11:39 UTC (permalink / raw)
To: linux-riscv
Cc: Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Stuebner,
Conor Dooley, Lad Prabhakar, prabhakar.csengg
The underscores aren't needed because there isn't anything already
named without them and the _CFG extension. This is a bit of a cleanup
by itself, but the real motivation is for a coming patch which would
otherwise need to add two more underscores to these macro names,
i.e. ____ALTERNATIVE_CFG, and that'd be gross.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
---
arch/riscv/include/asm/alternative-macros.h | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index a5a8a2a3c267..68dc349b0876 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -33,7 +33,7 @@
.endif
.endm
-.macro __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, enable
+.macro ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, enable
886 :
.option push
.option norvc
@@ -45,11 +45,11 @@
.endm
#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
- __ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)
+ ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)
-.macro __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
- new_c_2, vendor_id_2, errata_id_2, enable_2
- __ALTERNATIVE_CFG old_c, new_c_1, vendor_id_1, errata_id_1, enable_1
+.macro ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
+ new_c_2, vendor_id_2, errata_id_2, enable_2
+ ALTERNATIVE_CFG old_c, new_c_1, vendor_id_1, errata_id_1, enable_1
ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
.endm
@@ -57,9 +57,9 @@
CONFIG_k_1, \
new_c_2, vendor_id_2, errata_id_2, \
CONFIG_k_2) \
- __ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, \
+ ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, \
IS_ENABLED(CONFIG_k_1), \
- new_c_2, vendor_id_2, errata_id_2, \
+ new_c_2, vendor_id_2, errata_id_2, \
IS_ENABLED(CONFIG_k_2)
#else /* !__ASSEMBLY__ */
@@ -126,15 +126,15 @@
#else /* CONFIG_RISCV_ALTERNATIVE */
#ifdef __ASSEMBLY__
-.macro __ALTERNATIVE_CFG old_c
+.macro ALTERNATIVE_CFG old_c
\old_c
.endm
#define _ALTERNATIVE_CFG(old_c, ...) \
- __ALTERNATIVE_CFG old_c
+ ALTERNATIVE_CFG old_c
#define _ALTERNATIVE_CFG_2(old_c, ...) \
- __ALTERNATIVE_CFG old_c
+ ALTERNATIVE_CFG old_c
#else /* !__ASSEMBLY__ */
--
2.38.1
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^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 4/4] riscv: Don't duplicate _ALTERNATIVE_CFG* macros
2022-11-25 11:39 [PATCH 0/4] riscv: alternative-macros.h cleanups Andrew Jones
` (2 preceding siblings ...)
2022-11-25 11:39 ` [PATCH 3/4] riscv: alternatives: Drop the underscores from the assembly macro names Andrew Jones
@ 2022-11-25 11:39 ` Andrew Jones
2022-11-26 17:13 ` [PATCH 0/4] riscv: alternative-macros.h cleanups Conor Dooley
4 siblings, 0 replies; 9+ messages in thread
From: Andrew Jones @ 2022-11-25 11:39 UTC (permalink / raw)
To: linux-riscv
Cc: Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Stuebner,
Conor Dooley, Lad Prabhakar, prabhakar.csengg
Reduce clutter by only defining the _ALTERNATIVE_CFG* macros once,
rather than once for assembly and once for C. To do that, we need to
add __ALTERNATIVE_CFG* macros to the assembly side, but those are
one-liners. Also take the opportunity to do a bit of reformatting,
taking full advantage of the fact checkpatch gives us 100 char lines.
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
---
arch/riscv/include/asm/alternative-macros.h | 53 +++++++--------------
1 file changed, 17 insertions(+), 36 deletions(-)
diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index 68dc349b0876..a6c4f8ed41d3 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -44,23 +44,14 @@
ALT_NEW_CONTENT \vendor_id, \errata_id, \enable, \new_c
.endm
-#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
- ALTERNATIVE_CFG old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k)
-
.macro ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
new_c_2, vendor_id_2, errata_id_2, enable_2
ALTERNATIVE_CFG old_c, new_c_1, vendor_id_1, errata_id_1, enable_1
ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
.endm
-#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- CONFIG_k_1, \
- new_c_2, vendor_id_2, errata_id_2, \
- CONFIG_k_2) \
- ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, \
- IS_ENABLED(CONFIG_k_1), \
- new_c_2, vendor_id_2, errata_id_2, \
- IS_ENABLED(CONFIG_k_2)
+#define __ALTERNATIVE_CFG(...) ALTERNATIVE_CFG __VA_ARGS__
+#define __ALTERNATIVE_CFG_2(...) ALTERNATIVE_CFG_2 __VA_ARGS__
#else /* !__ASSEMBLY__ */
@@ -102,27 +93,21 @@
"887 :\n" \
ALT_NEW_CONTENT(vendor_id, errata_id, enable, new_c)
-#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
- __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k))
-
-#define __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- enable_1, \
- new_c_2, vendor_id_2, errata_id_2, \
- enable_2) \
- __ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1) \
+#define __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1, \
+ new_c_2, vendor_id_2, errata_id_2, enable_2) \
+ __ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1) \
ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2)
-#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- CONFIG_k_1, \
- new_c_2, vendor_id_2, errata_id_2, \
- CONFIG_k_2) \
- __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, \
- IS_ENABLED(CONFIG_k_1), \
- new_c_2, vendor_id_2, errata_id_2, \
- IS_ENABLED(CONFIG_k_2))
-
#endif /* __ASSEMBLY__ */
+#define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k) \
+ __ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, IS_ENABLED(CONFIG_k))
+
+#define _ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ new_c_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
+ __ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, IS_ENABLED(CONFIG_k_1), \
+ new_c_2, vendor_id_2, errata_id_2, IS_ENABLED(CONFIG_k_2))
+
#else /* CONFIG_RISCV_ALTERNATIVE */
#ifdef __ASSEMBLY__
@@ -173,13 +158,9 @@
* on the following sample code and then replace ALTERNATIVE() with
* ALTERNATIVE_2() to append its customized content.
*/
-#define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, \
- errata_id_1, CONFIG_k_1, \
- new_content_2, vendor_id_2, \
- errata_id_2, CONFIG_k_2) \
- _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, \
- errata_id_1, CONFIG_k_1, \
- new_content_2, vendor_id_2, \
- errata_id_2, CONFIG_k_2)
+#define ALTERNATIVE_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2) \
+ _ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1, \
+ new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2)
#endif
--
2.38.1
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^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH 0/4] riscv: alternative-macros.h cleanups
2022-11-25 11:39 [PATCH 0/4] riscv: alternative-macros.h cleanups Andrew Jones
` (3 preceding siblings ...)
2022-11-25 11:39 ` [PATCH 4/4] riscv: Don't duplicate _ALTERNATIVE_CFG* macros Andrew Jones
@ 2022-11-26 17:13 ` Conor Dooley
4 siblings, 0 replies; 9+ messages in thread
From: Conor Dooley @ 2022-11-26 17:13 UTC (permalink / raw)
To: Andrew Jones
Cc: linux-riscv, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Heiko Stuebner, Conor Dooley, Lad Prabhakar, prabhakar.csengg
On Fri, Nov 25, 2022 at 12:39:55PM +0100, Andrew Jones wrote:
> This series is a collection of cleanups for alternative-macros.h with
> the main motivation being that adding new ALTERNATIVE_3, ALTERNATIVE_4,
> ... will be possible without lots of bloat. For example, adding
> ALTERNATIVE_3 should look something like the diff below and
> ALTERNATIVE_4 the same. This has really only been compile tested, as
> not all alternatives are used when quickly booting over QEMU, which
> I also did.
I gave it a go on my D1 (with the macro args fixed) and it seems to work
as expected. I'm not comfortable enough with this stuff to actually give
you a tag though, sorry :/
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