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lib: sbi: sse: Fix a6 and a7 register content upon injection

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The specification states that a6 contains the current hart id and
a7 contains the entry argument. This was inverted in the current
implementation.

Reported-by: Andrew Jones <andrew.jones@linux.dev>
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Clément Léger
2024-11-25 11:53:00 +01:00
committed by Anup Patel
parent 851e301098
commit b47fcd01b3
1 changed files with 2 additions and 2 deletions
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4
lib/sbi/sbi_sse.c
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@@ -509,8 +509,8 @@ static void sse_event_inject(struct sbi_sse_event *e,
csr_write(CSR_SEPC, regs->mepc); csr_write(CSR_SEPC, regs->mepc);
/* Setup entry context */ /* Setup entry context */
regs->a6 = e->attrs.entry.arg; regs->a6 = current_hartid();
regs->a7 = current_hartid(); regs->a7 = e->attrs.entry.arg;
regs->mepc = e->attrs.entry.pc; regs->mepc = e->attrs.entry.pc;
/* Return to S-mode with virtualization disabled */ /* Return to S-mode with virtualization disabled */