target/hppa: two more simple fixes

[PATCH for-9.0 0/2] target/hppa: two more simple fixes

Richard Henderson posted 2 patches 1 month, 1 week ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20240321192813.371526-1-richard.henderson@linaro.org

Maintainers: Richard Henderson <richard.henderson@linaro.org>

target/hppa/translate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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[PATCH for-9.0 0/2] target/hppa: two more simple fixes

Posted by Richard Henderson 1 month, 1 week ago

Using the correct space for BE,L linkage might make the difference
for a cpu stress test.  I believe triggering this would require
something like

					f=(seg,ofs), b=(seg,ofs+4)
	be	0(sr1,r1)		f=(seg,ofs+4), b=(sr1,r1)
	be,l,n	0(sr2,r2),sr0,r31	f=(sr1,r1), b=(sr2,r2)

and then validating the contents of sr0 on return.

Linux only places B,GATE in the zero page, so amusingly there were
never any high bits to clobber.  But I can imagine HP-UX making
more use of gateway pages, and certainly a cpu stress test would.


r~


Richard Henderson (2):
  target/hppa: Fix BE,L set of sr0
  target/hppa: Fix B,GATE for wide mode

 target/hppa/translate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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2.34.1