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[xen master] xen/livepatch: make .livepatch.funcs read-only for in-tree tests

Date: Fri, 24 May 2024 19:55:01 +0000

Delivery-date: Fri, 24 May 2024 19:55:08 +0000

List-id: "Change log for Mercurial $receive only$" <xen-changelog.lists.xenproject.org>

commit 3a3111d01844a38c523909744d0ebc6d7b096fe7 Author: Roger Pau MonnÃ© <roger.pau@xxxxxxxxxx> AuthorDate: Thu May 23 10:03:14 2024 +0200 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Thu May 23 10:03:14 2024 +0200 xen/livepatch: make .livepatch.funcs read-only for in-tree tests This matches the flags of the .livepatch.funcs section when generated using livepatch-build-tools, which only sets the SHT_ALLOC flag. Also constify the definitions of the livepatch_func variables in the tests themselves, in order to better match the resulting output. Note that just making those variables constant is not enough to force the generated sections to be read-only. Signed-off-by: Roger Pau MonnÃ© <roger.pau@xxxxxxxxxx> Reviewed-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx> --- xen/test/livepatch/Makefile | 5 ++++- xen/test/livepatch/xen_action_hooks.c | 3 ++- xen/test/livepatch/xen_action_hooks_marker.c | 3 ++- xen/test/livepatch/xen_action_hooks_noapply.c | 3 ++- xen/test/livepatch/xen_action_hooks_norevert.c | 3 ++- xen/test/livepatch/xen_bye_world.c | 3 ++- xen/test/livepatch/xen_expectations.c | 3 ++- xen/test/livepatch/xen_expectations_fail.c | 3 ++- xen/test/livepatch/xen_hello_world.c | 3 ++- xen/test/livepatch/xen_nop.c | 2 +- xen/test/livepatch/xen_prepost_hooks.c | 3 ++- xen/test/livepatch/xen_prepost_hooks_fail.c | 3 ++- xen/test/livepatch/xen_replace_world.c | 3 ++- 13 files changed, 27 insertions(+), 13 deletions(-) diff --git a/xen/test/livepatch/Makefile b/xen/test/livepatch/Makefile index d987a8367f..4caa9e2432 100644 --- a/xen/test/livepatch/Makefile +++ b/xen/test/livepatch/Makefile @@ -142,7 +142,10 @@ xen_expectations_fail-objs := xen_expectations_fail.o xen_hello_world_func.o not quiet_cmd_livepatch = LD $@ -cmd_livepatch = $(LD) $(XEN_LDFLAGS) $(build_id_linker) -r -o $@ $(real-prereqs) +define cmd_livepatch + $(LD) $(XEN_LDFLAGS) $(build_id_linker) -r -o $@ $(real-prereqs); \ + $(OBJCOPY) --set-section-flags ".livepatch.funcs=alloc,readonly" $@ +endef $(obj)/%.livepatch: FORCE $(call if_changed,livepatch) diff --git a/xen/test/livepatch/xen_action_hooks.c b/xen/test/livepatch/xen_action_hooks.c index fa0b3ab35f..30c2c5de3c 100644 --- a/xen/test/livepatch/xen_action_hooks.c +++ b/xen/test/livepatch/xen_action_hooks.c @@ -84,7 +84,8 @@ LIVEPATCH_REVERT_HOOK(revert_hook); LIVEPATCH_POSTREVERT_HOOK(post_revert_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_action_hooks_marker.c b/xen/test/livepatch/xen_action_hooks_marker.c index d2e22f70d1..eb31a4abc4 100644 --- a/xen/test/livepatch/xen_action_hooks_marker.c +++ b/xen/test/livepatch/xen_action_hooks_marker.c @@ -96,7 +96,8 @@ LIVEPATCH_POSTAPPLY_HOOK(post_apply_hook); LIVEPATCH_PREREVERT_HOOK(pre_revert_hook); LIVEPATCH_POSTREVERT_HOOK(post_revert_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_action_hooks_noapply.c b/xen/test/livepatch/xen_action_hooks_noapply.c index 646a5fd2f0..92d10d53ff 100644 --- a/xen/test/livepatch/xen_action_hooks_noapply.c +++ b/xen/test/livepatch/xen_action_hooks_noapply.c @@ -120,7 +120,8 @@ LIVEPATCH_POSTAPPLY_HOOK(post_apply_hook); LIVEPATCH_PREREVERT_HOOK(pre_revert_hook); LIVEPATCH_POSTREVERT_HOOK(post_revert_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_action_hooks_norevert.c b/xen/test/livepatch/xen_action_hooks_norevert.c index c5fbab1746..fc2d33b531 100644 --- a/xen/test/livepatch/xen_action_hooks_norevert.c +++ b/xen/test/livepatch/xen_action_hooks_norevert.c @@ -115,7 +115,8 @@ LIVEPATCH_POSTAPPLY_HOOK(post_apply_hook); LIVEPATCH_PREREVERT_HOOK(pre_revert_hook); LIVEPATCH_POSTREVERT_HOOK(post_revert_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_bye_world.c b/xen/test/livepatch/xen_bye_world.c index 2700f0eedd..86589205d8 100644 --- a/xen/test/livepatch/xen_bye_world.c +++ b/xen/test/livepatch/xen_bye_world.c @@ -14,7 +14,8 @@ static const char bye_world_patch_this_fnc[] = "xen_extra_version"; extern const char *xen_bye_world(void); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_bye_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_bye_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = bye_world_patch_this_fnc, .new_addr = xen_bye_world, diff --git a/xen/test/livepatch/xen_expectations.c b/xen/test/livepatch/xen_expectations.c index c8175a458b..06c752c818 100644 --- a/xen/test/livepatch/xen_expectations.c +++ b/xen/test/livepatch/xen_expectations.c @@ -15,7 +15,8 @@ static const char livepatch_exceptions_str[] = "xen_extra_version"; extern const char *xen_hello_world(void); -struct livepatch_func __section(".livepatch.funcs") livepatch_exceptions = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_exceptions = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = livepatch_exceptions_str, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_expectations_fail.c b/xen/test/livepatch/xen_expectations_fail.c index 36a110286f..f42c19a953 100644 --- a/xen/test/livepatch/xen_expectations_fail.c +++ b/xen/test/livepatch/xen_expectations_fail.c @@ -16,7 +16,8 @@ extern const char *xen_hello_world(void); #define EXPECT_BYTES_COUNT 6 -struct livepatch_func __section(".livepatch.funcs") livepatch_exceptions = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_exceptions = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = livepatch_exceptions_str, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_hello_world.c b/xen/test/livepatch/xen_hello_world.c index 02f3f85dc0..08ab2f197e 100644 --- a/xen/test/livepatch/xen_hello_world.c +++ b/xen/test/livepatch/xen_hello_world.c @@ -47,7 +47,8 @@ LIVEPATCH_UNLOAD_HOOK(hi_func); LIVEPATCH_UNLOAD_HOOK(check_fnc); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_nop.c b/xen/test/livepatch/xen_nop.c index a224b7c670..6dea657365 100644 --- a/xen/test/livepatch/xen_nop.c +++ b/xen/test/livepatch/xen_nop.c @@ -14,7 +14,7 @@ * running this test-case you MUST verify that the assumptions are * correct (Hint: make debug and look in xen.s). */ -struct livepatch_func __section(".livepatch.funcs") livepatch_nop = { +const struct livepatch_func __section(".livepatch.funcs") livepatch_nop = { .version = LIVEPATCH_PAYLOAD_VERSION, .old_size = MINOR_VERSION_SZ, diff --git a/xen/test/livepatch/xen_prepost_hooks.c b/xen/test/livepatch/xen_prepost_hooks.c index 17f5af6a19..00b0b3abb0 100644 --- a/xen/test/livepatch/xen_prepost_hooks.c +++ b/xen/test/livepatch/xen_prepost_hooks.c @@ -102,7 +102,8 @@ LIVEPATCH_POSTAPPLY_HOOK(post_apply_hook); LIVEPATCH_PREREVERT_HOOK(pre_revert_hook); LIVEPATCH_POSTREVERT_HOOK(post_revert_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_prepost_hooks_fail.c b/xen/test/livepatch/xen_prepost_hooks_fail.c index 52fd7f642e..8497715646 100644 --- a/xen/test/livepatch/xen_prepost_hooks_fail.c +++ b/xen/test/livepatch/xen_prepost_hooks_fail.c @@ -55,7 +55,8 @@ LIVEPATCH_POSTAPPLY_HOOK(unreachable_post_hook); LIVEPATCH_PREREVERT_HOOK(unreachable_pre_hook); LIVEPATCH_POSTREVERT_HOOK(unreachable_post_hook); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_hello_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_hello_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = hello_world_patch_this_fnc, .new_addr = xen_hello_world, diff --git a/xen/test/livepatch/xen_replace_world.c b/xen/test/livepatch/xen_replace_world.c index 78a8f528b3..272cc55e82 100644 --- a/xen/test/livepatch/xen_replace_world.c +++ b/xen/test/livepatch/xen_replace_world.c @@ -13,7 +13,8 @@ static const char xen_replace_world_name[] = "xen_extra_version"; extern const char *xen_replace_world(void); -struct livepatch_func __section(".livepatch.funcs") livepatch_xen_replace_world = { +const struct livepatch_func __section(".livepatch.funcs") +livepatch_xen_replace_world = { .version = LIVEPATCH_PAYLOAD_VERSION, .name = xen_replace_world_name, .old_addr = 0, /* Forces the hypervisor to lookup .name */ -- generated by git-patchbot for /home/xen/git/xen.git#master

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