| Message ID | 20240722214313.89503-11-imp@bsdimp.com |
|---|---|
| State | New |
| Headers | show |
| Series | bsd-user: Misc changes for 9.1 (I hope) | expand |
On 7/23/24 07:43, Warner Losh wrote: > Only support 4k pages for aarch64 binaries. The variable page size stuff > isn't working just yet, so put in this lessor-of-evils kludge until that > is complete. Hmm. In what way is it not working? What if we limit this to bsd-user/main.c instead? set_preferred_target_page_bits(TARGET_PAGE_BITS_MIN); r~
On Mon, Jul 22, 2024 at 7:10 PM Richard Henderson < richard.henderson@linaro.org> wrote: > On 7/23/24 07:43, Warner Losh wrote: > > Only support 4k pages for aarch64 binaries. The variable page size stuff > > isn't working just yet, so put in this lessor-of-evils kludge until that > > is complete. > > Hmm. In what way is it not working? > > What if we limit this to bsd-user/main.c instead? > > set_preferred_target_page_bits(TARGET_PAGE_BITS_MIN); > It's a compile issue that this won't solve: In file included from ../bsd-user/aarch64/signal.c:21: ../bsd-user/qemu.h:146:20: warning: variable length array used [-Wvla] 146 | void *page[MAX_ARG_PAGES]; | ^~~~~~~~~~~~~ ../bsd-user/qemu.h:138:23: note: expanded from macro 'MAX_ARG_PAGES' 138 | #define MAX_ARG_PAGES (TARGET_ARG_MAX / TARGET_PAGE_SIZE) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../bsd-user/qemu.h:146:20: note: initializer of 'target_page' is unknown ../bsd-user/qemu.h:138:41: note: expanded from macro 'MAX_ARG_PAGES' 138 | #define MAX_ARG_PAGES (TARGET_ARG_MAX / TARGET_PAGE_SIZE) | ^ /dune/imp/git/qemu/include/exec/cpu-all.h:152:37: note: expanded from macro 'TARGET_PAGE_SIZE' 152 | # define TARGET_PAGE_SIZE (-(int)TARGET_PAGE_MASK) | ^ /dune/imp/git/qemu/include/exec/cpu-all.h:150:44: note: expanded from macro 'TARGET_PAGE_MASK' 150 | # define TARGET_PAGE_MASK ((target_long)target_page.mask) | ^ /dune/imp/git/qemu/include/exec/cpu-all.h:142:29: note: declared here 142 | extern const TargetPageBits target_page; | ^ In file included from ../bsd-user/aarch64/signal.c:21: ../bsd-user/qemu.h:146:15: error: fields must have a constant size: 'variable length array in structure' extension will never be supported 146 | void *page[MAX_ARG_PAGES]; | ^ 1 warning and 1 error generated. ninja: build stopped: subcommand failed. gmake: *** [Makefile:167: run-ninja] Error 1 that have a couple of additional levels after those issues are fixed... It's fixable, but will take a fair amount more time that I have before the deadline... Warner
On 7/23/24 15:01, Warner Losh wrote: > It's a compile issue that this won't solve: ... > It's fixable, but > will take a fair amount more time that I have before the deadline... Ok, fair. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/target/arm/cpu-param.h b/target/arm/cpu-param.h index 2d5f3aa312c..fa6cae0e3aa 100644 --- a/target/arm/cpu-param.h +++ b/target/arm/cpu-param.h @@ -21,9 +21,13 @@ #ifdef CONFIG_USER_ONLY # ifdef TARGET_AARCH64 # define TARGET_TAGGED_ADDRESSES +# ifdef __FreeBSD__ +# define TARGET_PAGE_BITS 12 +# else /* Allow user-only to vary page size from 4k */ # define TARGET_PAGE_BITS_VARY # define TARGET_PAGE_BITS_MIN 12 +# endif # else # define TARGET_PAGE_BITS 12 # endif
Only support 4k pages for aarch64 binaries. The variable page size stuff isn't working just yet, so put in this lessor-of-evils kludge until that is complete. Signed-off-by: Warner Losh <imp@bsdimp.com> --- target/arm/cpu-param.h | 4 ++++ 1 file changed, 4 insertions(+)