riscv/qemu - qemu - Gitea: Git with a cup of tea

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Author	SHA1	Message	Date
Marc-André Lureau	0f9668e0c1	Remove qemu-common.h include from most units Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-33-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	4 years ago
Richard Henderson	44b99a6d5f	exec: Build page-vary-common.c with -fno-lto In `bbc17caf81`, we used an alias attribute to allow target_page to be declared const, and yet be initialized late. This fails when using LTO with several versions of gcc. The compiler looks through the alias and decides that the const variable is statically initialized to zero, then propagates that zero to many uses of the variable. This can be avoided by compiling one object file with -fno-lto. In this way, any initializer cannot be seen, and the constant propagation does not occur. Since we are certain to have this separate compilation unit, we can drop the alias attribute as well. We simply have differing declarations for target_page in different compilation units. Drop the use of init_target_page, and drop the configure detection for CONFIG_ATTRIBUTE_ALIAS. In order to change the compilation flags for a file with meson, we must use a static_library. This runs into specific_ss, where we would need to create many static_library instances. Fix this by splitting page-vary.c: the page-vary-common.c part is compiled once as a static_library, while the page-vary.c part is left in specific_ss in order to handle the target-specific value of TARGET_PAGE_BITS_MIN. Reported-by: Gavin Shan <gshan@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210321211534.2101231-1-richard.henderson@linaro.org> [PMD: Fix typo in subject, split original patch in 3] Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Gavin Shan <gshan@redhat.com> Message-Id: <20210322112427.4045204-4-f4bug@amsat.org> [rth: Update MAINTAINERS] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>	5 years ago

Marc-André Lureau

0f9668e0c1

Remove qemu-common.h include from most units

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220323155743.1585078-33-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

4 years ago

Richard Henderson

44b99a6d5f

exec: Build page-vary-common.c with -fno-lto

In bbc17caf81, we used an alias attribute to allow target_page
to be declared const, and yet be initialized late.

This fails when using LTO with several versions of gcc.
The compiler looks through the alias and decides that the const
variable is statically initialized to zero, then propagates that
zero to many uses of the variable.

This can be avoided by compiling one object file with -fno-lto.
In this way, any initializer cannot be seen, and the constant
propagation does not occur.

Since we are certain to have this separate compilation unit, we
can drop the alias attribute as well.  We simply have differing
declarations for target_page in different compilation units.
Drop the use of init_target_page, and drop the configure detection
for CONFIG_ATTRIBUTE_ALIAS.

In order to change the compilation flags for a file with meson,
we must use a static_library.  This runs into specific_ss, where
we would need to create many static_library instances.

Fix this by splitting page-vary.c: the page-vary-common.c part is
compiled once as a static_library, while the page-vary.c part is
left in specific_ss in order to handle the target-specific value
of TARGET_PAGE_BITS_MIN.

Reported-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210321211534.2101231-1-richard.henderson@linaro.org>
[PMD: Fix typo in subject, split original patch in 3]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Gavin Shan <gshan@redhat.com>
Message-Id: <20210322112427.4045204-4-f4bug@amsat.org>
[rth: Update MAINTAINERS]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

5 years ago

2 Commits (b08e111b1e1dd553828360efebd4775abac5fbaf)