From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48981) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1erQ63-0003Y3-2U for qemu-devel@nongnu.org; Thu, 01 Mar 2018 10:26:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1erQ5z-0000wW-SA for qemu-devel@nongnu.org; Thu, 01 Mar 2018 10:26:15 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:47234 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1erQ5z-0000uv-LY for qemu-devel@nongnu.org; Thu, 01 Mar 2018 10:26:11 -0500 Date: Thu, 1 Mar 2018 15:26:00 +0000 From: "Dr. David Alan Gilbert" Message-ID: <20180301152559.GG2994@work-vm> References: <20180228180215.25470-1-wei@redhat.com> <20180228180215.25470-4-wei@redhat.com> <20180301094844.ckysyow5pppqf3if@kamzik.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180301094844.ckysyow5pppqf3if@kamzik.brq.redhat.com> Subject: Re: [Qemu-devel] [PATCH V7 3/4] tests/migration: Add migration-test header file List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Andrew Jones Cc: Wei Huang , qemu-devel@nongnu.org, peter.maydell@linaro.org, quintela@redhat.com * Andrew Jones (drjones@redhat.com) wrote: > On Wed, Feb 28, 2018 at 12:02:14PM -0600, Wei Huang wrote: > > This patch moves the settings related migration-test from the > > migration-test.c file to a seperate header file. It also renames the > > x86-a-b-bootblock.s file extension from .s to .S, allowing gcc > > pre-processor to include the C-style header file correctly. > > > > Signed-off-by: Wei Huang > > --- > > tests/migration-test.c | 34 +++++++++++++--------- > > tests/migration/Makefile | 4 +-- > > tests/migration/migration-test.h | 22 ++++++++++++++ > > .../{x86-a-b-bootblock.s => x86-a-b-bootblock.S} | 7 +++-- > > tests/migration/x86-a-b-bootblock.h | 2 +- > > 5 files changed, 49 insertions(+), 20 deletions(-) > > create mode 100644 tests/migration/migration-test.h > > rename tests/migration/{x86-a-b-bootblock.s => x86-a-b-bootblock.S} (94%) > > > > diff --git a/tests/migration-test.c b/tests/migration-test.c > > index 74f9361bdd..12c04a9648 100644 > > --- a/tests/migration-test.c > > +++ b/tests/migration-test.c > > @@ -21,10 +21,10 @@ > > #include "sysemu/sysemu.h" > > #include "hw/nvram/chrp_nvram.h" > > > > -#define MIN_NVRAM_SIZE 8192 /* from spapr_nvram.c */ > > +#include "migration/migration-test.h" > > > > -const unsigned start_address = 1024 * 1024; > > -const unsigned end_address = 100 * 1024 * 1024; > > +unsigned start_address; > > +unsigned end_address; > > bool got_stop; > > > > #if defined(__linux__) > > @@ -77,8 +77,8 @@ static bool ufd_version_check(void) > > > > static const char *tmpfs; > > > > -/* A simple PC boot sector that modifies memory (1-100MB) quickly > > - * outputting a 'B' every so often if it's still running. > > +/* The boot file modifies memory area in [start_address, end_address) > > + * repeatedly. It outputs a 'B' at a fixed rate while it's still running. > > */ > > #include "tests/migration/x86-a-b-bootblock.h" > > > > @@ -104,9 +104,8 @@ static void init_bootfile_ppc(const char *bootpath) > > memcpy(header->name, "common", 6); > > chrp_nvram_finish_partition(header, MIN_NVRAM_SIZE); > > > > - /* FW_MAX_SIZE is 4MB, but slof.bin is only 900KB, > > - * so let's modify memory between 1MB and 100MB > > - * to do like PC bootsector > > + /* FW_MAX_SIZE is 4MB, but slof.bin is only 900KB. So it is OK to modify > > + * memory between start_address and end_address like PC bootsector does. > > This comment reads a bit strange now that it starts with explicit sizes > and then uses generic terms. I think I'd move the comment to the header > file where PPC_TEST_MEM_START/END are defined, tweaking it a bit. Also, > the same g_assert enforcement done for AArch64 could be applied to PPC, > but with a max kernel size of 100K. Even PC could get an assert, but with > a max kernel size of 1M. IMHO the easiest solution here is just to leave the ppc comments alone; if ppc wants to change it they can do. Dave > > > */ > > > > sprintf(buf + 16, > > @@ -263,11 +262,11 @@ static void wait_for_migration_pass(QTestState *who) > > static void check_guests_ram(QTestState *who) > > { > > /* Our ASM test will have been incrementing one byte from each page from > > - * 1MB to <100MB in order. > > - * This gives us a constraint that any page's byte should be equal or less > > - * than the previous pages byte (mod 256); and they should all be equal > > - * except for one transition at the point where we meet the incrementer. > > - * (We're running this with the guest stopped). > > + * start_address to < end_address in order. This gives us a constraint > > + * that any page's byte should be equal or less than the previous pages > > + * byte (mod 256); and they should all be equal except for one transition > > + * at the point where we meet the incrementer. (We're running this with > > + * the guest stopped). > > */ > > unsigned address; > > uint8_t first_byte; > > @@ -278,7 +277,8 @@ static void check_guests_ram(QTestState *who) > > qtest_memread(who, start_address, &first_byte, 1); > > last_byte = first_byte; > > > > - for (address = start_address + 4096; address < end_address; address += 4096) > > + for (address = start_address + TEST_MEM_PAGE_SIZE; address < end_address; > > + address += TEST_MEM_PAGE_SIZE) > > { > > uint8_t b; > > qtest_memread(who, address, &b, 1); > > @@ -404,6 +404,9 @@ static void test_migrate_start(QTestState **from, QTestState **to, > > " -drive file=%s,format=raw" > > " -incoming %s", > > accel, tmpfs, bootpath, uri); > > + > > + start_address = X86_TEST_MEM_START; > > + end_address = X86_TEST_MEM_END; > > } else if (strcmp(arch, "ppc64") == 0) { > > > > /* On ppc64, the test only works with kvm-hv, but not with kvm-pr */ > > @@ -421,6 +424,9 @@ static void test_migrate_start(QTestState **from, QTestState **to, > > " -serial file:%s/dest_serial" > > " -incoming %s", > > accel, tmpfs, uri); > > + > > + start_address = PPC_TEST_MEM_START; > > + end_address = PPC_TEST_MEM_END; > > } else { > > g_assert_not_reached(); > > } > > diff --git a/tests/migration/Makefile b/tests/migration/Makefile > > index 8fbedaa8b8..013b8d1f44 100644 > > --- a/tests/migration/Makefile > > +++ b/tests/migration/Makefile > > @@ -25,8 +25,8 @@ include $(SRC_PATH)/rules.mak > > > > x86_64_cross_prefix := $(call find-cross-prefix,x86_64) > > > > -x86-a-b-bootblock.h: x86-a-b-bootblock.s > > - $(x86_64_cross_prefix)as --32 -march=i486 $< -o x86.o > > +x86-a-b-bootblock.h: x86-a-b-bootblock.S > > + $(x86_64_cross_prefix)gcc -m32 -march=i486 -c $< -o x86.o > > $(x86_64_cross_prefix)objcopy -O binary x86.o x86.boot > > dd if=x86.boot of=x86.bootsect bs=256 count=2 skip=124 > > echo "$$__note" > $@ > > diff --git a/tests/migration/migration-test.h b/tests/migration/migration-test.h > > new file mode 100644 > > index 0000000000..06c46a2fe0 > > --- /dev/null > > +++ b/tests/migration/migration-test.h > > @@ -0,0 +1,22 @@ > > +/* > > + * Copyright (c) 2018 Red Hat, Inc. and/or its affiliates > > + * > > + * This work is licensed under the terms of the GNU GPL, version 2 or later. > > + * See the COPYING file in the top-level directory. > > + */ > > +#ifndef _TEST_MIGRATION_H_ > > +#define _TEST_MIGRATION_H_ > > + > > +/* Common */ > > +#define TEST_MEM_PAGE_SIZE 4096 > > + > > +/* x86 */ > > +#define X86_TEST_MEM_START (1 * 1024 * 1024) > > +#define X86_TEST_MEM_END (100 * 1024 * 1024) > > + > > +/* PPC */ > > +#define PPC_TEST_MEM_START (1 * 1024 * 1024) > > +#define PPC_TEST_MEM_END (100 * 1024 * 1024) > > +#define MIN_NVRAM_SIZE 8192 /* from spapr_nvram.c */ > > + > > +#endif /* _TEST_MIGRATION_H_ */ > > diff --git a/tests/migration/x86-a-b-bootblock.s b/tests/migration/x86-a-b-bootblock.S > > similarity index 94% > > rename from tests/migration/x86-a-b-bootblock.s > > rename to tests/migration/x86-a-b-bootblock.S > > index 98dbfab084..a4da995a89 100644 > > --- a/tests/migration/x86-a-b-bootblock.s > > +++ b/tests/migration/x86-a-b-bootblock.S > > @@ -12,6 +12,7 @@ > > # > > # Author: dgilbert@redhat.com > > > > +#include "migration-test.h" > > > > .code16 > > .org 0x7c00 > > @@ -45,11 +46,11 @@ start: # at 0x7c00 ? > > mov $0, %bl > > mainloop: > > # Start from 1MB > > - mov $(1024*1024),%eax > > + mov $X86_TEST_MEM_START,%eax > > innerloop: > > incb (%eax) > > - add $4096,%eax > > - cmp $(100*1024*1024),%eax > > + add $TEST_MEM_PAGE_SIZE,%eax > > + cmp $X86_TEST_MEM_END,%eax > > jl innerloop > > > > inc %bl > > diff --git a/tests/migration/x86-a-b-bootblock.h b/tests/migration/x86-a-b-bootblock.h > > index 9e8e2e028b..44e4b99506 100644 > > --- a/tests/migration/x86-a-b-bootblock.h > > +++ b/tests/migration/x86-a-b-bootblock.h > > @@ -1,5 +1,5 @@ > > /* This file is automatically generated from > > - * tests/migration/x86-a-b-bootblock.s, edit that and then run > > + * tests/migration/x86-a-b-bootblock.S, edit that and then run > > * "make x86-a-b-bootblock.h" inside tests/migration to update, > > * and then remember to send both in your patch submission. > > */ > > -- > > 2.14.3 > > > > > > I added a new suggestion to this patch, but it's not a deal breaker for > me, so > > Reviewed-by: Andrew Jones -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK