Date: Mon, 26 Jan 2026 16:23:20 +0000 From: Mitchell Horne <mhorne@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Doongar Singh <doonbsd@gmail.com> Subject: git: 972c488bf411 - main - riscv: Add macro for hfence.gvma instruction Message-ID: <697794f8.3c6b5.4b26c93@gitrepo.freebsd.org>
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The branch main has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=972c488bf4117d9eb29e5753c6c5a2250154df3d commit 972c488bf4117d9eb29e5753c6c5a2250154df3d Author: Doongar Singh <doonbsd@gmail.com> AuthorDate: 2026-01-26 16:18:22 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2026-01-26 16:23:16 +0000 riscv: Add macro for hfence.gvma instruction Add an inline function hfence_gvma() for hfence.gvma instruction. Signed-off-by: Doongar Singh <doonbsd@gmail.com> Reviewed by: mhorne, markj Differential Revision: https://reviews.freebsd.org/D54857 --- sys/riscv/include/cpufunc.h | 7 +++++++ sys/riscv/vmm/vmm_riscv.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/sys/riscv/include/cpufunc.h b/sys/riscv/include/cpufunc.h index 75b22632c546..c39f17131eb7 100644 --- a/sys/riscv/include/cpufunc.h +++ b/sys/riscv/include/cpufunc.h @@ -119,6 +119,13 @@ sfence_vma_asid_page(uint64_t asid, uintptr_t addr) : "memory"); } +static __inline void +hfence_gvma(void) +{ + + __asm __volatile("hfence.gvma" ::: "memory"); +} + #define rdcycle() csr_read64(cycle) #define rdtime() csr_read64(time) #define rdinstret() csr_read64(instret) diff --git a/sys/riscv/vmm/vmm_riscv.c b/sys/riscv/vmm/vmm_riscv.c index cfd3decd8cfa..fe2ca5c07789 100644 --- a/sys/riscv/vmm/vmm_riscv.c +++ b/sys/riscv/vmm/vmm_riscv.c @@ -625,7 +625,7 @@ vmmops_run(void *vcpui, register_t pc, pmap_t pmap, struct vm_eventinfo *evinfo) * have been modified, it may be necessary to execute an HFENCE.GVMA * instruction (see Section 5.3.2) before or after writing hgatp. */ - __asm __volatile("hfence.gvma" ::: "memory"); + hfence_gvma(); csr_write(hgatp, pmap->pm_satp); if (has_sstc)home | help
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