From: Richard Henderson <richard.henderson@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: j@getutm.app, qemu-devel@nongnu.org
Subject: Re: [PATCH v3 15/41] accel/tcg: Support split-wx for linux with memfd
Date: Tue, 10 Nov 2020 09:26:26 -0800 [thread overview]
Message-ID: <7c06f1ee-6b86-9e4e-2b09-b4e2d27f1e47@linaro.org> (raw)
In-Reply-To: <875z6d87ql.fsf@linaro.org>
On 11/10/20 9:03 AM, Alex Bennée wrote:
>
> Richard Henderson <richard.henderson@linaro.org> writes:
>
>> We cannot use a real temp file, because we would need to find
>> a filesystem that does not have noexec enabled. However, a
>> memfd is not associated with any filesystem.
>>
>> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
>
> It looks like this breaks --enable-tcg-interpreter:
>
> FAILED: libqemu-ppc64-softmmu.fa.p/accel_tcg_translate-all.c.o
> cc -Ilibqemu-ppc64-softmmu.fa.p -I. -I../.. -Itarget/ppc -I../../target/ppc -I../../dtc/libfdt -I../../capstone/include/capstone -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/spice-server -I/usr/include/spice-1 -I/usr/include/pixman-1 -I/usr/include/libdrm -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -pipe -Wall -Winvalid-pch -Werror -std=gnu99 -O2 -g -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -DLEGACY_RDMA_REG_MR -isystem /home/alex/lsrc/qemu.git/linux-headers -isystem linux-headers -iquote /home/alex/lsrc/qemu.git/tcg/tci -iquote . -iquote /home/alex/lsrc/qemu.git -iquote /home/alex/lsrc/qemu.git/accel/tcg -iquote /home/alex/lsrc/qemu.git/include -iquote /home/alex/lsrc/qemu.git/disas/libvixl -pthread -fPIC -isystem../../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="ppc64-softmmu-config-target.h"' '-DCONFIG_DEVICES="ppc64-softmmu-config-devices.h"' -MD -MQ libqemu-ppc64-softmmu.fa.p/accel_tcg_translate-all.c.o -MF libqemu-ppc64-softmmu.fa.p/accel_tcg_translate-all.c.o.d -o libqemu-ppc64-softmmu.fa.p/accel_tcg_translate-all.c.o -c ../../accel/tcg/translate-all.c
> ../../accel/tcg/translate-all.c:1138:13: error: ‘alloc_code_gen_buffer_splitwx_memfd’ defined but not used [-Werror=unused-function]
> static bool alloc_code_gen_buffer_splitwx_memfd(size_t size, Error **errp)
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
Bah, this will actually be patch 39, where I switch from if to ifdef. I'll
have to rearrange those.
r~
next prev parent reply other threads:[~2020-11-10 17:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-06 3:28 [PATCH v3 00/41] Mirror map JIT memory for TCG Richard Henderson
2020-11-06 3:28 ` [PATCH v3 01/41] tcg: Enhance flush_icache_range with separate data pointer Richard Henderson
2020-11-06 20:31 ` Alex Bennée
2020-11-06 22:51 ` Richard Henderson
2020-11-07 21:08 ` Alex Bennée
2020-11-06 3:28 ` [PATCH v3 02/41] tcg: Move tcg prologue pointer out of TCGContext Richard Henderson
2020-11-07 21:10 ` Alex Bennée
2020-11-06 3:28 ` [PATCH v3 03/41] tcg: Move tcg epilogue " Richard Henderson
2020-11-06 3:28 ` [PATCH v3 04/41] tcg: Add in_code_gen_buffer Richard Henderson
2020-11-06 3:28 ` [PATCH v3 05/41] tcg: Introduce tcg_splitwx_to_{rx,rw} Richard Henderson
2020-11-06 3:28 ` [PATCH v3 06/41] tcg: Adjust TCGLabel for const Richard Henderson
2020-11-06 3:28 ` [PATCH v3 07/41] tcg: Adjust tcg_out_call " Richard Henderson
2020-11-06 3:28 ` [PATCH v3 08/41] tcg: Adjust tcg_out_label " Richard Henderson
2020-11-06 3:28 ` [PATCH v3 09/41] tcg: Adjust tcg_register_jit " Richard Henderson
2020-11-06 3:28 ` [PATCH v3 10/41] tcg: Adjust tb_target_set_jmp_target for split-wx Richard Henderson
2020-11-06 3:28 ` [PATCH v3 11/41] tcg: Make DisasContextBase.tb const Richard Henderson
2020-11-06 3:28 ` [PATCH v3 12/41] tcg: Make tb arg to synchronize_from_tb const Richard Henderson
2020-11-06 3:28 ` [PATCH v3 13/41] tcg: Use Error with alloc_code_gen_buffer Richard Henderson
2020-11-06 3:28 ` [PATCH v3 14/41] tcg: Add --accel tcg,split-wx property Richard Henderson
2020-11-06 3:28 ` [PATCH v3 15/41] accel/tcg: Support split-wx for linux with memfd Richard Henderson
2020-11-10 17:03 ` Alex Bennée
2020-11-10 17:26 ` Richard Henderson [this message]
2020-11-06 3:28 ` [PATCH v3 16/41] accel/tcg: Support split-wx for darwin/iOS with vm_remap Richard Henderson
2020-11-08 3:37 ` Joelle van Dyne
2020-11-10 17:37 ` Alex Bennée
2020-11-10 17:57 ` Joelle van Dyne
2020-11-06 3:28 ` [PATCH v3 17/41] tcg: Return the TB pointer from the rx region from exit_tb Richard Henderson
2020-11-06 3:28 ` [PATCH v3 18/41] tcg/i386: Support split-wx code generation Richard Henderson
2020-11-06 3:28 ` [PATCH v3 19/41] tcg/aarch64: Use B not BL for tcg_out_goto_long Richard Henderson
2020-11-06 3:29 ` [PATCH v3 20/41] tcg/aarch64: Implement flush_idcache_range manually Richard Henderson
2020-11-06 3:29 ` [PATCH v3 21/41] tcg/aarch64: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 22/41] disas: Push const down through host disasassembly Richard Henderson
2020-11-06 3:29 ` [PATCH v3 23/41] tcg/tci: Push const down through bytecode reading Richard Henderson
2020-11-06 3:29 ` [PATCH v3 24/41] tcg: Introduce tcg_tbrel_diff Richard Henderson
2020-11-06 3:29 ` [PATCH v3 25/41] tcg/ppc: Use tcg_tbrel_diff Richard Henderson
2020-11-06 3:29 ` [PATCH v3 26/41] tcg/ppc: Use tcg_out_mem_long to reset TCG_REG_TB Richard Henderson
2020-11-06 3:29 ` [PATCH v3 27/41] tcg/ppc: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 28/41] tcg/sparc: Use tcg_tbrel_diff Richard Henderson
2020-11-06 3:29 ` [PATCH v3 29/41] tcg/sparc: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 30/41] tcg/s390: Use tcg_tbrel_diff Richard Henderson
2020-11-06 3:29 ` [PATCH v3 31/41] tcg/s390: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 32/41] tcg/riscv: Fix branch range checks Richard Henderson
2020-11-06 3:29 ` [PATCH v3 33/41] tcg/riscv: Remove branch-over-branch fallback Richard Henderson
2020-11-06 3:29 ` [PATCH v3 34/41] tcg/riscv: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 35/41] accel/tcg: Add mips support to alloc_code_gen_buffer_splitwx_memfd Richard Henderson
2020-11-06 3:29 ` [PATCH v3 36/41] tcg/mips: Do not assert on relocation overflow Richard Henderson
2020-11-06 3:29 ` [PATCH v3 37/41] tcg/mips: Support split-wx code generation Richard Henderson
2020-11-06 3:29 ` [PATCH v3 38/41] tcg/arm: " Richard Henderson
2020-11-06 3:29 ` [PATCH v3 39/41] tcg: Remove TCG_TARGET_SUPPORT_MIRROR Richard Henderson
2020-11-06 3:29 ` [PATCH v3 40/41] tcg: Constify tcg_code_gen_epilogue Richard Henderson
2020-11-06 3:29 ` [PATCH v3 41/41] tcg: Constify TCGLabelQemuLdst.raddr Richard Henderson
2020-11-06 4:00 ` [PATCH v3 00/41] Mirror map JIT memory for TCG no-reply
2020-11-08 3:38 ` Joelle van Dyne
2020-11-17 3:47 ` Joelle van Dyne
2020-11-17 15:20 ` Richard Henderson
2020-11-17 15:31 ` Joelle van Dyne
2020-11-17 17:26 ` Alex Bennée
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