Re: [Qemu-devel] [PATCH v4] target/s390x: Add support for the TEST BLOCK instruction

2017-05-18 Thread Aurelien Jarno
On 2017-05-18 19:26, Thomas Huth wrote: > TEST BLOCK was likely once used to execute basic memory > tests, but nowadays it's just a (slow) way to clear a page. > > Signed-off-by: Thomas Huth > --- > v4: > - Switched TCG_CALL_NO_RWG back to TCG_CALL_NO_WG as indicated by Richard > > v3: > - U

Re: [Qemu-devel] [PATCH v4] target/s390x: Add support for the TEST BLOCK instruction

2017-05-18 Thread Richard Henderson
On 05/18/2017 10:26 AM, Thomas Huth wrote: TEST BLOCK was likely once used to execute basic memory tests, but nowadays it's just a (slow) way to clear a page. Signed-off-by: Thomas Huth --- v4: - Switched TCG_CALL_NO_RWG back to TCG_CALL_NO_WG as indicated by Richard v3: - Use TCG_CALL_

[Qemu-devel] [PATCH v4] target/s390x: Add support for the TEST BLOCK instruction

2017-05-18 Thread Thomas Huth
TEST BLOCK was likely once used to execute basic memory tests, but nowadays it's just a (slow) way to clear a page. Signed-off-by: Thomas Huth --- v4: - Switched TCG_CALL_NO_RWG back to TCG_CALL_NO_WG as indicated by Richard v3: - Use TCG_CALL_NO_RWG instead of TCG_CALL_NO_WG - Use potentia