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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c13931055sm16493405ad.139.2024.10.05.13.06.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Oct 2024 13:06:06 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: deller@kernel.org, peter.maydell@linaro.org, alex.bennee@linaro.org, linux-parisc@vger.kernel.org, qemu-arm@nongnu.org Subject: [PATCH v2 06/21] hw/core/tcg-cpu-ops: Introduce tlb_fill_align hook Date: Sat, 5 Oct 2024 13:05:45 -0700 Message-ID: <20241005200600.493604-7-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241005200600.493604-1-richard.henderson@linaro.org> References: <20241005200600.493604-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x632.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Add the hook to struct TCGCPUOps. Add a default implementation that recognizes alignment faults before page faults. Populate all TCGCPUOps structures with the default implementation. Signed-off-by: Richard Henderson Reviewed-by: Helge Deller Reviewed-by: Peter Maydell --- include/hw/core/tcg-cpu-ops.h | 25 +++++++++++++++++++++++++ accel/tcg/cputlb.c | 19 +++++++++++++++++++ target/alpha/cpu.c | 1 + target/arm/cpu.c | 1 + target/arm/tcg/cpu-v7m.c | 1 + target/avr/cpu.c | 1 + target/hppa/cpu.c | 1 + target/i386/tcg/tcg-cpu.c | 1 + target/loongarch/cpu.c | 1 + target/m68k/cpu.c | 1 + target/microblaze/cpu.c | 1 + target/mips/cpu.c | 1 + target/openrisc/cpu.c | 1 + target/ppc/cpu_init.c | 1 + target/riscv/tcg/tcg-cpu.c | 1 + target/rx/cpu.c | 1 + target/s390x/cpu.c | 1 + target/sh4/cpu.c | 1 + target/sparc/cpu.c | 1 + target/tricore/cpu.c | 1 + target/xtensa/cpu.c | 1 + 21 files changed, 63 insertions(+) diff --git a/include/hw/core/tcg-cpu-ops.h b/include/hw/core/tcg-cpu-ops.h index 34318cf0e6..49420bc93d 100644 --- a/include/hw/core/tcg-cpu-ops.h +++ b/include/hw/core/tcg-cpu-ops.h @@ -13,6 +13,7 @@ #include "exec/breakpoint.h" #include "exec/hwaddr.h" #include "exec/memattrs.h" +#include "exec/memop.h" #include "exec/mmu-access-type.h" #include "exec/vaddr.h" @@ -131,6 +132,21 @@ struct TCGCPUOps { * same function signature. */ bool (*cpu_exec_halt)(CPUState *cpu); + + /** + * @tlb_fill_align: Handle a softmmu tlb miss, and alignment fault + * + * If the access is valid, call tlb_set_page and return true; + * if the access is invalid and probe is true, return false; + * otherwise raise an exception and do not return. + * + * The alignment check is deferred to this hook, so that the + * target can choose to recognize either before or after the + * permission check. + */ + bool (*tlb_fill_align)(CPUState *cpu, vaddr address, MemOp mop, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr); /** * @tlb_fill: Handle a softmmu tlb miss * @@ -234,6 +250,15 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len, */ int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len); +/* + * tlb_fill_align_first: + * + * Prioritize alignment faults over page faults. + */ +bool tlb_fill_align_first(CPUState *cpu, vaddr address, MemOp mop, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr); + #endif #endif /* TCG_CPU_OPS_H */ diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index f5fca5a118..4bc34c8a37 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -1565,6 +1565,25 @@ bool tlb_plugin_lookup(CPUState *cpu, vaddr addr, int mmu_idx, } #endif + +/* + * Generic implementation of tlb_fill_align which recognizes + * alignment faults before page faults. + */ +bool tlb_fill_align_first(CPUState *cpu, vaddr addr, MemOp mop, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr) +{ + unsigned a_bits = memop_alignment_bits(mop); + + if (unlikely(addr & ((1 << a_bits) - 1))) { + cpu_unaligned_access(cpu, addr, access_type, mmu_idx, retaddr); + } + + return cpu->cc->tcg_ops->tlb_fill(cpu, addr, size, access_type, + mmu_idx, probe, retaddr); +} + /* * Probe for a load/store operation. * Return the host address and into @flags. diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c index 9db1dffc03..2eb5afd34a 100644 --- a/target/alpha/cpu.c +++ b/target/alpha/cpu.c @@ -217,6 +217,7 @@ static const TCGCPUOps alpha_tcg_ops = { .record_sigsegv = alpha_cpu_record_sigsegv, .record_sigbus = alpha_cpu_record_sigbus, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = alpha_cpu_tlb_fill, .cpu_exec_interrupt = alpha_cpu_exec_interrupt, .cpu_exec_halt = alpha_cpu_has_work, diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 19191c2391..08731ed4e0 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2663,6 +2663,7 @@ static const TCGCPUOps arm_tcg_ops = { .record_sigsegv = arm_cpu_record_sigsegv, .record_sigbus = arm_cpu_record_sigbus, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = arm_cpu_tlb_fill, .cpu_exec_interrupt = arm_cpu_exec_interrupt, .cpu_exec_halt = arm_cpu_exec_halt, diff --git a/target/arm/tcg/cpu-v7m.c b/target/arm/tcg/cpu-v7m.c index 5496f14dc1..8874fe0e11 100644 --- a/target/arm/tcg/cpu-v7m.c +++ b/target/arm/tcg/cpu-v7m.c @@ -242,6 +242,7 @@ static const TCGCPUOps arm_v7m_tcg_ops = { .record_sigsegv = arm_cpu_record_sigsegv, .record_sigbus = arm_cpu_record_sigbus, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = arm_cpu_tlb_fill, .cpu_exec_interrupt = arm_v7m_cpu_exec_interrupt, .cpu_exec_halt = arm_cpu_exec_halt, diff --git a/target/avr/cpu.c b/target/avr/cpu.c index 3132842d56..6ac4434f1d 100644 --- a/target/avr/cpu.c +++ b/target/avr/cpu.c @@ -211,6 +211,7 @@ static const TCGCPUOps avr_tcg_ops = { .restore_state_to_opc = avr_restore_state_to_opc, .cpu_exec_interrupt = avr_cpu_exec_interrupt, .cpu_exec_halt = avr_cpu_has_work, + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = avr_cpu_tlb_fill, .do_interrupt = avr_cpu_do_interrupt, }; diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c index 7cf2e2f266..3b6c325e09 100644 --- a/target/hppa/cpu.c +++ b/target/hppa/cpu.c @@ -226,6 +226,7 @@ static const TCGCPUOps hppa_tcg_ops = { .restore_state_to_opc = hppa_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = hppa_cpu_tlb_fill, .cpu_exec_interrupt = hppa_cpu_exec_interrupt, .cpu_exec_halt = hppa_cpu_has_work, diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c index cca19cd40e..83cfb86346 100644 --- a/target/i386/tcg/tcg-cpu.c +++ b/target/i386/tcg/tcg-cpu.c @@ -117,6 +117,7 @@ static const TCGCPUOps x86_tcg_ops = { .record_sigsegv = x86_cpu_record_sigsegv, .record_sigbus = x86_cpu_record_sigbus, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = x86_cpu_tlb_fill, .do_interrupt = x86_cpu_do_interrupt, .cpu_exec_halt = x86_cpu_exec_halt, diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 7212fb5f8f..ae8856d988 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -755,6 +755,7 @@ static const TCGCPUOps loongarch_tcg_ops = { .restore_state_to_opc = loongarch_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = loongarch_cpu_tlb_fill, .cpu_exec_interrupt = loongarch_cpu_exec_interrupt, .cpu_exec_halt = loongarch_cpu_has_work, diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index 1d49f4cb23..295ebd941b 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -534,6 +534,7 @@ static const TCGCPUOps m68k_tcg_ops = { .restore_state_to_opc = m68k_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = m68k_cpu_tlb_fill, .cpu_exec_interrupt = m68k_cpu_exec_interrupt, .cpu_exec_halt = m68k_cpu_has_work, diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index 135947ee80..6e63600631 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -411,6 +411,7 @@ static const TCGCPUOps mb_tcg_ops = { .restore_state_to_opc = mb_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = mb_cpu_tlb_fill, .cpu_exec_interrupt = mb_cpu_exec_interrupt, .cpu_exec_halt = mb_cpu_has_work, diff --git a/target/mips/cpu.c b/target/mips/cpu.c index 89655b1900..5a36b22256 100644 --- a/target/mips/cpu.c +++ b/target/mips/cpu.c @@ -553,6 +553,7 @@ static const TCGCPUOps mips_tcg_ops = { .restore_state_to_opc = mips_restore_state_to_opc, #if !defined(CONFIG_USER_ONLY) + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = mips_cpu_tlb_fill, .cpu_exec_interrupt = mips_cpu_exec_interrupt, .cpu_exec_halt = mips_cpu_has_work, diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c index 6ec54ad7a6..9223228758 100644 --- a/target/openrisc/cpu.c +++ b/target/openrisc/cpu.c @@ -231,6 +231,7 @@ static const TCGCPUOps openrisc_tcg_ops = { .restore_state_to_opc = openrisc_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = openrisc_cpu_tlb_fill, .cpu_exec_interrupt = openrisc_cpu_exec_interrupt, .cpu_exec_halt = openrisc_cpu_has_work, diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 23881d09e9..42a38ec155 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7482,6 +7482,7 @@ static const TCGCPUOps ppc_tcg_ops = { #ifdef CONFIG_USER_ONLY .record_sigsegv = ppc_cpu_record_sigsegv, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = ppc_cpu_tlb_fill, .cpu_exec_interrupt = ppc_cpu_exec_interrupt, .cpu_exec_halt = ppc_cpu_has_work, diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index dea8ab7a43..42c4ea13af 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -137,6 +137,7 @@ static const TCGCPUOps riscv_tcg_ops = { .restore_state_to_opc = riscv_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = riscv_cpu_tlb_fill, .cpu_exec_interrupt = riscv_cpu_exec_interrupt, .cpu_exec_halt = riscv_cpu_has_work, diff --git a/target/rx/cpu.c b/target/rx/cpu.c index 36d2a6f189..27fc372ca4 100644 --- a/target/rx/cpu.c +++ b/target/rx/cpu.c @@ -188,6 +188,7 @@ static const TCGCPUOps rx_tcg_ops = { .initialize = rx_translate_init, .synchronize_from_tb = rx_cpu_synchronize_from_tb, .restore_state_to_opc = rx_restore_state_to_opc, + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = rx_cpu_tlb_fill, #ifndef CONFIG_USER_ONLY diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index 4e41a3dff5..8120ddeb5b 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -363,6 +363,7 @@ static const TCGCPUOps s390_tcg_ops = { .record_sigsegv = s390_cpu_record_sigsegv, .record_sigbus = s390_cpu_record_sigbus, #else + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = s390_cpu_tlb_fill, .cpu_exec_interrupt = s390_cpu_exec_interrupt, .cpu_exec_halt = s390_cpu_has_work, diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c index 8f07261dcf..b03f6dfad8 100644 --- a/target/sh4/cpu.c +++ b/target/sh4/cpu.c @@ -252,6 +252,7 @@ static const TCGCPUOps superh_tcg_ops = { .restore_state_to_opc = superh_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = superh_cpu_tlb_fill, .cpu_exec_interrupt = superh_cpu_exec_interrupt, .cpu_exec_halt = superh_cpu_has_work, diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index 54cb269e0a..da1bfad5f0 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -924,6 +924,7 @@ static const TCGCPUOps sparc_tcg_ops = { .restore_state_to_opc = sparc_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = sparc_cpu_tlb_fill, .cpu_exec_interrupt = sparc_cpu_exec_interrupt, .cpu_exec_halt = sparc_cpu_has_work, diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c index 1a26171590..9d8f8f13d2 100644 --- a/target/tricore/cpu.c +++ b/target/tricore/cpu.c @@ -173,6 +173,7 @@ static const TCGCPUOps tricore_tcg_ops = { .initialize = tricore_tcg_init, .synchronize_from_tb = tricore_cpu_synchronize_from_tb, .restore_state_to_opc = tricore_restore_state_to_opc, + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = tricore_cpu_tlb_fill, .cpu_exec_interrupt = tricore_cpu_exec_interrupt, .cpu_exec_halt = tricore_cpu_has_work, diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index a08c7a0b1f..b0f84403f0 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -232,6 +232,7 @@ static const TCGCPUOps xtensa_tcg_ops = { .restore_state_to_opc = xtensa_restore_state_to_opc, #ifndef CONFIG_USER_ONLY + .tlb_fill_align = tlb_fill_align_first, .tlb_fill = xtensa_cpu_tlb_fill, .cpu_exec_interrupt = xtensa_cpu_exec_interrupt, .cpu_exec_halt = xtensa_cpu_has_work,