diff options
| author | Doongar Singh <doonbsd@gmail.com> | 2026-01-26 16:18:22 +0000 |
|---|---|---|
| committer | Mitchell Horne <mhorne@FreeBSD.org> | 2026-01-26 16:23:16 +0000 |
| commit | 972c488bf4117d9eb29e5753c6c5a2250154df3d (patch) | |
| tree | cfb47d1f8051ba46eb9b832686a2bae8e48d29c5 | |
| parent | e769bc77184312b6137a9b180c97b87c0760b849 (diff) | |
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
| -rw-r--r-- | sys/riscv/include/cpufunc.h | 7 | ||||
| -rw-r--r-- | sys/riscv/vmm/vmm_riscv.c | 2 |
2 files changed, 8 insertions, 1 deletions
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) |