From: Yong-Xuan Wang Date: Tue, 29 Oct 2024 08:55:39 +0000 (+0800) Subject: RISC-V: KVM: Fix APLIC in_clrip and clripnum write emulation X-Git-Tag: v6.13-rc1~97^2~16^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=60821fb4dd7345e5662094accf0a52845306de8c;p=thirdparty%2Fkernel%2Flinux.git RISC-V: KVM: Fix APLIC in_clrip and clripnum write emulation In the section "4.7 Precise effects on interrupt-pending bits" of the RISC-V AIA specification defines that: "If the source mode is Level1 or Level0 and the interrupt domain is configured in MSI delivery mode (domaincfg.DM = 1): The pending bit is cleared whenever the rectified input value is low, when the interrupt is forwarded by MSI, or by a relevant write to an in_clrip register or to clripnum." Update the aplic_write_pending() to match the spec. Fixes: d8dd9f113e16 ("RISC-V: KVM: Fix APLIC setipnum_le/be write emulation") Signed-off-by: Yong-Xuan Wang Reviewed-by: Vincent Chen Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20241029085542.30541-1-yongxuan.wang@sifive.com Signed-off-by: Anup Patel --- diff --git a/arch/riscv/kvm/aia_aplic.c b/arch/riscv/kvm/aia_aplic.c index da6ff1bade0df..f59d1c0c8c43a 100644 --- a/arch/riscv/kvm/aia_aplic.c +++ b/arch/riscv/kvm/aia_aplic.c @@ -143,7 +143,7 @@ static void aplic_write_pending(struct aplic *aplic, u32 irq, bool pending) if (sm == APLIC_SOURCECFG_SM_LEVEL_HIGH || sm == APLIC_SOURCECFG_SM_LEVEL_LOW) { if (!pending) - goto skip_write_pending; + goto noskip_write_pending; if ((irqd->state & APLIC_IRQ_STATE_INPUT) && sm == APLIC_SOURCECFG_SM_LEVEL_LOW) goto skip_write_pending; @@ -152,6 +152,7 @@ static void aplic_write_pending(struct aplic *aplic, u32 irq, bool pending) goto skip_write_pending; } +noskip_write_pending: if (pending) irqd->state |= APLIC_IRQ_STATE_PENDING; else