| Message ID | 20180517174718.10107-30-alex.bennee@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | fix building of tests/tcg | expand |
On 05/17/2018 10:46 AM, Alex Bennée wrote: > Broken since I updated to 18.04 > > Signed-off-by: Alex Bennée <alex.bennee@linaro.org> > --- > tests/tcg/arm/Makefile.target | 8 ++++++++ > 1 file changed, 8 insertions(+) Meh. Most of these fail for hosts with 64k pages. So, sure, disable this one, but I don't think that the others are useful either. r~
Richard Henderson <richard.henderson@linaro.org> writes: > On 05/17/2018 10:46 AM, Alex Bennée wrote: >> Broken since I updated to 18.04 >> >> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> >> --- >> tests/tcg/arm/Makefile.target | 8 ++++++++ >> 1 file changed, 8 insertions(+) > > Meh. Most of these fail for hosts with 64k pages. > So, sure, disable this one, but I don't think that > the others are useful either. I'm not entirely sure what the point of -p is meant to be. Is it just a performance hack for linux-user to have bigger pages? We are not using softmmu but I guess it affects the PageDesc structures? -- Alex Bennée
On 05/17/2018 02:24 PM, Alex Bennée wrote: > > Richard Henderson <richard.henderson@linaro.org> writes: > >> On 05/17/2018 10:46 AM, Alex Bennée wrote: >>> Broken since I updated to 18.04 >>> >>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> >>> --- >>> tests/tcg/arm/Makefile.target | 8 ++++++++ >>> 1 file changed, 8 insertions(+) >> >> Meh. Most of these fail for hosts with 64k pages. >> So, sure, disable this one, but I don't think that >> the others are useful either. > > I'm not entirely sure what the point of -p is meant to be. Is it just a > performance hack for linux-user to have bigger pages? We are not using > softmmu but I guess it affects the PageDesc structures? I think it was just meant for testing, but I really have no idea. If we actually had better support for mismatched host/guest page sizes, then one could view -p as a way to choose between legitimate guest page sizes. E.g. 8k, 16k, 64k are all legitimate for aarch64. r~
On 05/17/2018 06:34 PM, Richard Henderson wrote: > On 05/17/2018 02:24 PM, Alex Bennée wrote: >> >> Richard Henderson <richard.henderson@linaro.org> writes: >> >>> On 05/17/2018 10:46 AM, Alex Bennée wrote: >>>> Broken since I updated to 18.04 >>>> >>>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> >>>> --- >>>> tests/tcg/arm/Makefile.target | 8 ++++++++ >>>> 1 file changed, 8 insertions(+) >>> >>> Meh. Most of these fail for hosts with 64k pages. >>> So, sure, disable this one, but I don't think that >>> the others are useful either. >> >> I'm not entirely sure what the point of -p is meant to be. Is it just a >> performance hack for linux-user to have bigger pages? We are not using >> softmmu but I guess it affects the PageDesc structures? > > I think it was just meant for testing, but I really have no idea. > > If we actually had better support for mismatched host/guest page sizes, then > one could view -p as a way to choose between legitimate guest page sizes. E.g. > 8k, 16k, 64k are all legitimate for aarch64. 8k + 16k on aarch64: Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff --git a/tests/tcg/arm/Makefile.target b/tests/tcg/arm/Makefile.target index 1ef5d79fe3..9d2b551732 100644 --- a/tests/tcg/arm/Makefile.target +++ b/tests/tcg/arm/Makefile.target @@ -16,3 +16,11 @@ hello-arm: LDFLAGS+=-nostdlib test-arm-iwmmxt: CFLAGS+=-marm -march=iwmmxt -mabi=aapcs -mfpu=fpv4-sp-d16 test-arm-iwmmxt: test-arm-iwmmxt.S $(CC) $(CFLAGS) $< -o $@ $(LDFLAGS) + +# Currently broken for -p 32768 +ifeq ($(TARGET_NAME), arm) +run-test-mmap: test-mmap + $(call quiet-command, $(QEMU) $< > test-mmap.out, "TEST", "$< (default) on $(TARGET_NAME)") + $(call quiet-command, $(QEMU) -p 8192 $< 8192 > test-mmap-8192.out, "TEST", "$< (8k pages) on $(TARGET_NAME)") + $(call quiet-command, $(QEMU) -p 16384 $< 16384 > test-mmap-16384.out, "TEST", "$< (16k pages) on $(TARGET_NAME)") +endif
Broken since I updated to 18.04 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> --- tests/tcg/arm/Makefile.target | 8 ++++++++ 1 file changed, 8 insertions(+)